S-7750C23XX-HCT1 [SII]
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT); 可编程端口控制器（带内置E2PROM线路端口扩展器）
| 型号： | S-7750C23XX-HCT1 |
| 厂家： | 
SEIKO INSTRUMENTS INC |
| 描述： | PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT) |
| 文件： | 总44页 (文件大小：660K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Rev.1.1_00
PROGRAMMABLE PORT CONTROLLER
S-7750C
(PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
The S-7750C is a programmable port controller IC comprised of an
E2PROM, a control circuit for data output, a circuit to prevent
malfunction caused by low power supply voltage and others.
This IC operates at 400 kHz and interfaces with exteriors via
I2C-bus. Using a serial signal, users can control both of the 8ch
digital output “H” or “L” and delay time which can be set at each
channel.
For the digital output pins at the 8 channels, the default value and
inverted delay time are settable at each port. This IC is effective to
control ON / OFF the chips surrounding MPU. And this IC
maintains the default value for control despite power-off due to the
included E2PROM.
Features
• Operating voltage range:
2.3 to 4.5 V
400 kHz
• 8ch digital output
• Operating frequency of I2C-bus interface:
• Function to prevent malfunction during low power supply voltage operation
• Low current consumption at standby:
• Built-in E2PROM circuit
• E2PROM endurance:
3.0 µA Max. (VCCH = 4.5 V)
105 cycles / word*1 (at −40 to +85 °C)
• E2PROM data retention:
• Function to protect Write in E2PROM
• Lead-free product
10 years (after rewriting 105 cycles / word)
• Small package:
WLP-16A
*1. For each address (Word: 8-bit)
Application
• Mobile phone
• Portable communication device
• Digital still camera
• Digital video camera
Package
Drawing Code
Package Name
WLP-16A
Package
HA016-A
Tape
HA016-A
Reel
HA016-A
1
Seiko Instruments Inc.
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
S-7750C
Rev.1.1_00
Pin Configuration
WLP-16
Bottom View
A1
A2
A3
A4
CLK
SCL
WP
VCCH
B1
B2
B3
B4
DO7
VSS
SDA
DO0
C1
C2
C3
C4
DO6 TIMEN DO3
DO1
D1
D2
D3
D4
DO5
DO4 VCCL DO2
(1.93×2.07×0.6 max.)
Figure 1
List of Pin
Table 1 WLP-16A List of Pin
Pin No.
A1
A2
A3
A4
Pin name
Description
CLK
SCL
WP
VCCH
DO7
Input for external clock
Input for serial clock
Input for Write protect
Power supply
B1
Output port 7
B2
B3
VSS
SDA
GND
Serial data I/O
B4
DO0
DO6
TIMEN
DO3
DO1
DO5
DO4
VCCL
DO2
Digital output port 0
Digital output port 6
Input for timer enable
Digital output port 3
Digital output port 1
Digital output port 5
Digital output port 4
Power supply for output port
Digital output port 2
C1
C2
C3
C4
D1
D2
D3
D4
2
Seiko Instruments Inc.
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
Rev.1.1_00
S-7750C
Block Diagram
VCCH
VCCL
VCCH
VCCL
E2PROM
8-bit
× 12
DO0
DO1
DO2
DO3
DO4
DO5
DO6
DO7
WP
Interface
Circuit
SDA
SCL
Data Output
Controller
Data Register,
Control Port
Register
Mode Decode Logic
(High / Low setting)
(Delay time setting)
TIMEN
Timer Scale Setting
Register
Timer Setting
Register
Dividing
Circuit
Decoder
Circuit for Prevention
Malfunction by Low
Voltage
Timer Enable
Register
Oscillation
Circuit
CLK
VSS
Figure 2
3
Seiko Instruments Inc.
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
S-7750C
Rev.1.1_00
General Description of Pin Function
1. SDA (Serial data I/O) pin
The SDA pin transmits serial data bi-directionally, is comprised of a signal input pin and a pin with Nch transistor open
drain output. In use, generally, connect the SDA line to any other device which has the open-drain or open-collector
output with Wired-OR connection by pulling up to VCCH by a resistor.
2. SCL (Input for serial clock) pin
The SCL pin is an input pin for serial clock, processes a signal at a rising / falling edge of SCL clock. Pay attention
fully to the rising / falling time and comply with specifications.
3. WP (Input for Write protect) pin
This pin performs Write Protect to E2PROM (This pin does not have a function for Write protect to the register).
Set the WP pin in VCCH when using the Write Protect function. If not, set the WP pin to GND.
4. TIMEN (Input for timer enable) pin
This pin controls enable (“H”) /disable (“L”) / start (“L”→”H”) in the timer action (inversion of digital output due to
elapsed period). Regarding the timer action, refer to “ Command” and “ Condition to start timer, Port Output
and Register”. When raising VCCH and TIMEN simultaneously, set VCCH ≥ 2.5 V.
5. CLK (Input for external clock) pin
As primary clock in the circuit action, users are able to use clock either from the internal oscillation circuit or input it
externally by option. Users can input clock from this pin in case of using external clock. If not, connect this pin to
VCCH or GND.
6. DO7 to DO0 (Digital output) pin
These pins are for the digital output port. Their values are equal to the ones of a control port register during output. Its
output inverts after; the timer starts and delay time has elapsed. Regarding the timer action, refer to “ Command”
and “ Condition to start timer, Port Output and Register”.
7. VSS pin
Connect to GND.
8. VCCH pin
Except for the output ports, the power supply is applied to the entire circuit via this pin. Regarding the voltage’s value
to be applied to this pin, refer to “ Recommended Operating Conditions”.
9. VCCL pin
This pin is to apply the power supply for the output ports. Regarding the voltage’s value to be applied to this pin, refer
to “ Recommended Operating Conditions”.
4
Seiko Instruments Inc.
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
Rev.1.1_00
S-7750C
Equivalent Circuit of I/O Pin
This IC’s I/O pin does not have an element of pull-up or pull-down. The SDA line has an open drain output. The
followings are equivalent circuits.
SCL, TIMEN, CLK
Figure 3 SCL, TIMEN, CLK Pin
SDA
Open drain output
Figure 4 SDA Pin
WP
Figure 5 WP Pin
VCCL
DO
Figure 6 DO Pin and VCCL Pin
5
Seiko Instruments Inc.
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
S-7750C
Rev.1.1_00
Absolute Maximum Ratings
Table 2
Symbol
VCCH
VCCL
VIN
VOUT1
VOUT2
Topr
Item
Power supply voltage1
Power supply voltage2
Input voltage
Output voltage (SDA)
Output voltage (DO)
Operating ambient temperature
Storage temperature
Rating
−0.3 to +7.0
−0.3 to VCCH
−0.3 to VCCH + 0.3
−0.3 to VCCH
−0.3 to VCCL
−40 to +85
Unit
V
V
V
V
V
°C
°C
Tstg
−65 to +150
Caution The absolute maximum ratings are rated values exceeding which the product could suffer
physical damage. These values must therefore not be exceeded under any conditions.
Recommended Operating Conditions
Table 3
Item
Symbol
VCCH
VCCL
VIH
Option
Read, Write
−
Min.
2.3*1
1.5
Typ.
Max.
4.5
VCCH
VCCH
Unit
V
V
V
V
Power supply voltage
Output power supply voltage
High-level input voltage
Low-level input voltage
−
−
−
−
*2
VCCH = 2.3 to 4.5 V
VCCH = 2.3 to 4.5 V
0.7 × VCCH
0.0
VIL
0.3 × VCCH
*1. Set VCCH ≥ 2.5 V when raising VCCH and TIMEN simultaneously.
*2. Set the voltage of VCCL as VCCH ≥ VCCL
.
Pin Capacitance
Table 4
(Ta = 25°C, f = 1.0 MHz, VCCH = 3 V)
Item
Input capacitance
Symbol
CIN
Pin
Condition
VIN = 0 V
VI / O = 0 V
Min.
Typ.
Max.
Unit
SCL, WP,
TIMEN, CLK
SDA, DO
−
−
10
pF
Input / output capacitance
CI / O
−
−
10
pF
Endurance
Table 5
Operating Temperature
Item
Endurance
Symbol
NW
Min.
105
Typ.
−
Max.
−
Unit
−40 to +85°C
cycles / word*1
*1. For each address (Word: 8-bit)
6
Seiko Instruments Inc.
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
Rev.1.1_00
S-7750C
DC Electrical Characteristics
Table 6 DC Characteristcs 1
VCCH = VCCL = 2.3 to 4.5 V
Item
Symbol
Condition*1
Unit
Min.
Typ.
Max.
3.0
0.8
Current consumption during standby
Current consumption (READ)
Current consumption (WRITE)
Current consumption during operation of internal
oscillation circuit
ISB
fSCL = 0 Hz, TIMEN Pin = “L”
fSCL = 400 kHz, TIMEN Pin = “L”
fSCL = 400 kHz, TIMEN Pin = “L”
−
−
−
−
−
−
µA
mA
mA
ICC1
ICC2
ICC3
4.0
−
−
−
0.8
mA
*1. The total current consumption when VCCH = VCCL. No load on pins DO7 to DO0.
Table 7 DC Characteristcs 2
V
Min.
−
−
−
CCH = 2.3 to 4.5 V
Item
Symbol
Condition
Unit
Typ.
0.1
0.1
−
Max.
Input current
ILI
ILO
VIN = GND to VCCH
VOUT = GND to VCCH
IOL = 3.2 mA
1.0
1.0
0.4
0.3
µA
µA
V
Output leakage current (SDA)
Low-level output voltage (SDA)
VOL1
I
OL = 1.5 mA
−
−
V
IOL = 100 µA
Low-level output voltage (DO)
High-level output voltage (DO)
VOL2
−
−
−
−
0.1
V
V
V
VCCL = VCCH to 1.5 V
VCCL = VCCH to 2.0 V
IOH = −100 µA
V
CCL−0.3
CCL−0.3
−
VOH2
VCCL = VCCH to 1.5 V
IOH = −10 µA
V
−
7
Seiko Instruments Inc.
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
S-7750C
Rev.1.1_00
AC Electrical Characteristics
VCCH
Table 8 Measurement Conditions
Input pulse voltage
VIL = 0.1×VCCH, VIH = 0.9×VCCH
20 ns
0.5×VCCH
100 pF+ Pull-up resistor 1.0 kΩ
Rising / falling time of input pulse
Output reference voltage
Output load
R = 1.0 kΩ
SDA
C = 100 pF
Figure 7 Output Load Circuit
Table 9 AC Electrical Characteristics
V
Min.
CCH = 2.3 to 4.5 V
Item
Symbol
Unit
Typ.
−
−
Max.
400
−
SCL clock frequency *1
SCL clock time “L” *1
fSCL
0
1.0
0.9
−
50
0.6
0.6
100
0
kHz
µs
µs
µs
ns
µs
µs
ns
ns
µs
µs
µs
µs
ns
kHz
tLOW
tHIGH
tAA
SCL clock time “H” *1
−
−
SDA output delay time *1
SDA output hold time *1
Start condition setup time *1
Start condition hold time *1
Data input setup time *1
Data input hold time *1
Stop condition setup time *1
SCL, SDA rise time *1
−
−
0.9
−
tDH
tSU.STA
tHD.STA
tSU.DAT
tHD.DAT
tSU.STO
tR
−
−
−
−
−
−
−
−
0.6
−
−
−
−
−
−
0.3
0.3
−
SCL, SDA fall time *1
tF
tBUF
−
Bus release time *1
1.3
−
Noise suppression time
tI
−
−
50
400
Frequency for external oscillation input *2
fTEX
−
*1. The timing is defined by 10% and 90% of the waveform.
*2. When selecting the option for external oscillation input.
tR
tF
tHIGH
tLOW
SCL
tSU.STO
tHD.DAT
tSU.DAT
t
t
SDA IN
tBUF
tAA
tDH
SDA OUT
Figure 8 Bus Timing
8
Seiko Instruments Inc.
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
Rev.1.1_00
S-7750C
Table 10 Characteristics of Period
Item
Symbol
tWR
tDLY1
tDLY2
tOUT
Min.
−
0.8×T
0.8×LT
−
Typ.
2.0
T
LT
9×LT
Max.
5.0
1.2×T
1.2×LT
−
Unit
ms
µs
µs
µs
Write period to E2PROM
Delay time accuracy (short-time setting)*1
Delay time accuracy (long-time setting)*1
Timeout*1
*1. Refer to “Figure 16 Timer Setting Register DO7 to DO0 / E2PROM” “Figure 17 Example of Using Timer Setting for
DO7 to DO0 Register”.
T represents time reference (timer scale) in the short-time setting.
LT represents time reference (timer scale) in the long-time setting.
tWR
SCL
SDA
B0
Start Condition
Stop Condition
Write Data
Acknowledgement
Signal
Figure 9 Write Cycle Timing
9
Seiko Instruments Inc.
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
S-7750C
Rev.1.1_00
Device Addressing
To start communication, the master device (MPU) on the system generates a start condition for the slave device
(S-7750C). After that, the master device sends a device address with 7-bit and Read / Write instruction code with 1-bit
on the SDA bus. The higher 3 bits in a device address (DC2, DC1, DC0) are device codes. The fixed value which users
selected by option (either one of 000, 001, 010, 011, 100, 101, 110, 111) is a device code. Command is omitted if a
device code does not correspond. The next 1-bit TA / C is a bit for timer address setting / command switch.
When TA / C = “1”, the next 3 bits (C2, C1, C0) are used as address, when TA / C = “0”, (C2, C1, C0) are used as
command for the timer setting register.
Acknowledgment
Signal
Timer address setting /
command switch
Start
Condition
Read / Write bit
Device
Code
Address /
command
STA
DC2
MSB
DC1
DC0
B5
TA / C
C2
C1
C0
B1
R / W
LSB
ACK
ACK
Stop
Condition
Register data
B7
MSB
B6
B4
B3
B2
B0
LSB
STP
Figure 10 Device Addressing
10
Seiko Instruments Inc.
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
Rev.1.1_00
S-7750C
Configuration of Command
If setting TA / C , the bit for timer address setting / command switch, in “0”, address / command (C2, C1, C0) is
recognized as command. There are 8 types of command, and Read / Write in each register is done by them. If setting
the bit for timer address setting / command switch(TA / C) in “1”, the S-7750C recognizes this command as timer setting
for DO0 to DO7.
Table 11 List of Command
Data
Command
C2
C1
C0
TA / C
R / W
B7
B6
B5
B4
B3
B2
B1
B0
*1
*1
－
－
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Reload ( R / W fixed to 0)
Switching access to register / E2PROM
Timer enable register
W
0 / 1*2
TEN7 TEN6 TEN5 TEN4 TEN3 TEN2 TEN1 TEN0
－
W
－
Do not use (Do not access)
Free area 1*3
F17 F16 F15 F14 F13 F12 F11 F10
R / W
R / W
R / W
R / W
R / W
R / W
R / W
R / W
R / W
R / W
R / W
R / W
Control port*3
CTR7 CTR6 CTR5 CTR4 CTR3 CTR2 CTR1 CTR0
TS7 TS6 TS5 TS4 TS3 TS2 TS1 TS0
F27 F26 F25 F24 F23 F22 F21 F20
Timer scale setting*3
Free area 2*3
Timer setting for DO0*3
Timer setting for DO1*3
Timer setting for DO2*3
Timer setting for DO3*3
Timer setting for DO4*3
Timer setting for DO5*3
Timer setting for DO6*3
Timer setting for DO7*3
8×
8×
8×
8×
8×
8×
8×
8×
T
T
T
T
T
T
T
T
7×T
7×T
7×T
7×T
7×T
7×T
7×T
7×T
6×T
6×T
6×T
6×T
6×T
6×T
6×T
6×T
5
5
5
5
5
5
5
5
×
×
×
×
×
×
×
×
T
T
T
T
T
T
T
T
4
4
4
4
4
4
4
4
×
×
×
×
×
×
×
×
T
T
T
T
T
T
T
T
3×T
3×T
3×T
3×T
3×T
3×T
3×T
3×T
2×T
2×T
2×T
2×T
2×T
2×T
2×T
2×T
1×T
1×T
1×T
1×T
1×T
1×T
1×T
1×T
*1. By inputting dummy data, the master device sends data in 18-bit during transmission. However, the S-7750C executes
the command when it has loaded 9-bit. Regarding acknowledgment, refer to “ Operation 4. Acknowledgment”.
*2. R / W = “0”; register access mode, R / W = “1”; E2PROM access mode
*3. To switch access to register / E2PROM, use the “Switching access to register / E2PROM” command. When rewriting the
E2PROM, the register is rewritten simultaneously.
Register and E2PROM
In the S-7750C, the register and the E2PROM correspond each other. The S-7750C maintains the default value for control
despite power-off due to the included E2PROM. The data in the register is installed in the E2PROM by using the reload
command. And the data in the E2PROM is automatically installed into the register when power-on and the lower power
supply voltage is applied. Restoring the default value for control is possible any time due to these functions.
These 12 commands have the configuration in which the register and E2PROM correspond.
・Free area 1, 2
・Control port
・Setting for timer scale
・Timer setting for DO7 to DO0
Users are able to switch access between corresponding register and E2PROM by the “Switching access to register /
E2PROM” command. Immediately after power-on, the S-7750C is in the “register access mode”. In this register access
mode, only the register is rewritten, the E2PROM maintains the prior data. But in the “E2PROM access mode”, data both in
the register and the E2PROM is rewritten. In data Read, access mode data which is being selected by user; is read.
11
Seiko Instruments Inc.
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
S-7750C
Rev.1.1_00
Command
1. Reload
This is a 1-byte command. Set bitR / W in “0”. When inputting this command, all registers to be reloaded are once set
in “0”, the data which correspond to the E2PROM is loaded to the register. However, the data in the E2PROM does not
change. The output ports (DO7 to DO0) output “L” once regardless of the data in the control-port register / E2PROM. If
the TIMEN pin is in “H”, the timer starts its action. Besides, port output (DO7 to DO0) is inverted after the time has
elapsed; the time set both by a timer scale setting register and a timer setting register. This is “a timer action”. This is
active from the start to timeout. Regarding the action, refer to “ Condition to start timer, Port Output and
Register”.
2. Switching access to register / E2PROM
This is a 1-byte command. The mode is in the “register access mode” whenR / W = “0”, “E2PROM access mode”
whenR / W = “1”. Immediately after power-on, the S-7750C is in the “register access mode”. In this register access
mode, only the register is rewritten, the E2PROM maintains the prior data. But in the “E2PROM access mode”, both
data in the register and in the E2PROM is rewritten. In data Read, access mode data which is being selected by user;
is read.
3. Timer enable register
A timer enable register is an 8-bit register for Write only (it sends back “FFh” during Read). When the TIMEN pin is in
“H”, Write “1” in each bit in the register starts the timer action. The timer action starts at the moment that S-7750C has
received all data of the timer enable command. After writing “1” in the timer enable register, the bit automatically goes
back in “0”. If setting this register in “00h” and the timer setting register in “00h”, a timer does not work. During the
timer action it is impossible to do Write in the timer enable register. A timer enable register is not the one to be
reloaded, because it does not have the corresponding E2PROM.
B6
B5
B4
B3
B2
B1
B0
B7
LSB
MSB
TEN 7
W
TEN 6
W
TEN 5
W
TEN 4
W
TEN 3
W
TEN 2
W
TEN 1
W
TEN 0
W
TEN7 to TEN0 = 0 : DO7 to DO0 Disable to invert output
TEN7 to TEN0 = 1 : DO7 to DO0 Enable to invert output
Figure 11 Timer Enable Register
12
Seiko Instruments Inc.
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
Rev.1.1_00
S-7750C
4. Control port
A control port register is an 8-bit register. Users can set output at each output port (DO7 to DO0). The data in this
register is “1”, output from port is “H”. If “0”, output from port is “L”. This register is the one to be reloaded by
command.
B6
B5
B4
B3
B2
B1
B0
B7
MSB
LSB
CTR7
R / W
CTR6
R / W
CTR5
R / W
CTR4
R / W
CTR3
R / W
CTR2
R / W
CTR1
R / W
CTR0
R / W
CTR7 to CTR0 = 0 : output from DO7 to DO0 = “L”
CTR7 to CTR0 = 1 : output from DO7 to DO0 = “H”
Figure 12 Control Port Register / E2PROM
5. Timer scale setting
A timer scale setting register is an 8-bit register. Output at each port (DO7 to DO0) is inverted in delay time; using this
register, users can set time reference of delay time (scale) either in a short-time or a long-time setting.
Setting “0” in the data in this register, sets time reference (scale) as a long period setting, if “1”, sets time reference
(scale) as a short-time setting. This register is the one to be reloaded by command.
B6
B5
B4
B3
B2
B1
B0
B7
LSB
MSB
TS7
TS6
TS5
TS4
TS3
TS2
TS1
TS0
R / W
R / W
R / W
R / W
R / W
R / W
R / W
R / W
TS7 to TS0 = 0 : Timer scale DO7 to DO0 Long-time setting
TS7 to TS0 = 1 : Timer scale DO7 to DO0 Short-time setting
Figure 13 Timer Scale Setting Register / E2PROM
6. Free area 1, Free area 2
Both of free area 1 and 2 are 8-bit registers. Users are able to use these registers freely, and these registers do not
affect on other functions of the S-7750C. These free area 1 and 2 registers are the ones to be reloaded by command.
B6
B5
B4
B3
B2
B1
B0
B7
LSB
MSB
MSB
F17
F16
F15
F14
F13
F12
F11
F10
R / W
R / W
R / W
R / W
R / W
R / W
R / W
R / W
Figure 14 Free Area 1 Register / E2PROM
B6
B5
B4
B3
B2
B1
B0
B7
LSB
F27
F26
F25
F24
F23
F22
F21
F20
R / W
R / W
R / W
R / W
R / W
R / W
R / W
R / W
Figure 15 Free Area 2 Register / E2PROM
13
Seiko Instruments Inc.
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
S-7750C
Rev.1.1_00
7. DO7 to DO0 Timer setting
A timer setting register is an 8-bit register, and for each output port (DO7 to DO0), users can set delay time which makes
port output inverted after the timer action starts. Delay time at each output port (DO7 to DO0) is set as seen in Figure 16.
Set “1” in a 1-bit only. This is the data to be set in each timer setting register.
Regarding the timer setting, the following options are selectable.
・ Option to select timer clock (internal oscillation clock / external input clock)
・ Option for delay time (×1 / ×2)
Time reference for timer setting register is defined by these 2 types of option and the timer scale setting register.
(1) When using an internal clock (Typ.)
Option A : (Short-time setting scale, long-time setting scale) = (T, LT) = (5 µs, 320 µs)
Option B : (Short-time setting scale, long-time setting scale) = (T, LT) = (10 µs, 640 µs)
(2) When using an external clock (Period of input clock = T’)
Option A : (Short-time setting scale, long-time setting scale) = (T, LT) = (T’, 64×T’)
Option B : (Short-time setting scale, long-time setting scale) = (T, LT) = (2×T’, 128×T’)
In Figure 16, a timer scale setting register has a short-time setting. In the long-time setting, the port in which the timer
scale setting register is set T changes into LT. For example, if setting the option to the register as seen below, in DO7,
output from the port is inverted after 35 µs (7×5 µs).
Other examples are shown in Figure 17.
・ Option to select timer clock = clock from internal oscillation circuit
・ Option for delay time = ×1
・ Timer scale setting register = 80 h
・ DO7 timer setting register = 40 h
Setting “00h” in the register does not make port output inverted. A timer setting register is the one to be reloaded by
command.
MSB
LSB
B2
B3
B1
B0
B4
B5
6×T
6×T
6×T
6×T
6×T
6×T
6×T
6×T
R / W
B6
B7
8×T
8×T
8×T
8×T
8×T
8×T
8×T
8×T
R / W
DO7
DO6
DO5
DO4
DO3
DO2
DO1
DO0
7×T
7×T
7×T
7×T
7×T
7×T
7×T
7×T
R / W
5×T
5×T
5×T
5×T
5×T
5×T
5×T
5×T
R / W
4×T
4×T
4×T
4×T
4×T
4×T
4×T
4×T
R / W
3×T
3×T
3×T
3×T
3×T
3×T
3×T
3×T
R / W
2×T
2×T
2×T
2×T
2×T
2×T
2×T
2×T
R / W
1×T
1×T
1×T
1×T
1×T
1×T
1×T
1×T
R / W
Figure 16 Timer Setting Register DO7 to DO0 / E2PROM
14
Seiko Instruments Inc.
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
Rev.1.1_00
S-7750C
Example 1. When using an internal clock
Example 1-1 In case of; Timer scale register “1” (short-time setting), Delay time option “A” (×1 setting); (T = 5 µs)
Example 1-2 In case of; Timer scale register “0” (long-time setting), Delay time option “A” (×1 setting); (LT = 320 µs)
B6
B5
B4
B3
B2
B1
B0
B7
MSB
Example 1-1
Example 1-2
LSB
40 µs
35 µs
30 µs
25 µs
20 µs
15 µs
10 µs
5 µs
2.56 ms
2.24 ms
1.92 ms
1.60 ms
1.28 ms
0.96 ms
0.64 ms
0.32 ms
Example 2. When using an external clock (100 KHz, T’ = 10 µs)
Example 2-1 In case of; Timer scale register “1” (short-time setting), Delay time option “B” (
×
2 setting); (T = 2
×
T’ = 20
µ
s)
Example 2-2 In case of; Timer scale register “0” (long-time setting), Delay time option “B” (
×
2 setting); (LT = 128
×
T’ = 1280
µ
s)
B6
B5
B4
B3
B2 B1
B0
B7
MSB
LSB
Example 2-1
160 µs
140 µs
120 µs
100 µs
80 µs
60 µs
40 µs
20 µs
Example 2-2
10.24 ms 8.96 ms
7.68 ms
6.40 ms
5.12 ms
3.84 ms
2.56 ms
1.28 ms
Figure 17 Example of Using Timer Setting for DO7 to DO0 Register
15
Seiko Instruments Inc.
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
S-7750C
Rev.1.1_00
Condition to start timer, Port Output and Register
The timer action starts when either condition is satisfied. However, if “00h” is set in the timer setting register, timer action
does not start.
1. When power-on (the TIMEN pin is in “H”)
2. When the TIMEN pin changes from “L” to “H”
3. While the TIMEN pin is in “H”, users do Write any commands other than “00h” in the timer enable register.
4. While the TIMEN pin is in “H”, the power supply voltage exceeds the level of release voltage of the circuit for
prevention malfunction by low voltage (2.05 V typ.).
5. While the TIMEN pin is in “H”, users set the reload command.
Starting a timer action makes output from the DO7 to DO0 pins inverted after the period set by a timer has elapsed.
Figure 18 shows the timing chart of 1, 2, and 3. Set VCCH ≥ 2.5V when raising VCCH and TIMEN simultaneously.
Power supply voltage
2.05 V Typ.
VCCH / VCCL
Signal of low power
supply voltage
detection
TIMEN pin
Data loading
Start of timer action by setting
Start of timer action by
TIMEN pin “L”
→ “H”
Start of timer action due to power-on
Write in timer enable register
Oscillation circuit EN
Time out
Time out
Time out
Delay time by timer setting for DO1
Delay time by timer setting for DO1
Delay time by timer setting for DO1
DO1 pin
(When E2PROM
CTR1 = 0)
Reload starts
CTR1 register
(When E2PROM
CTR1 = 0)
*1
*1
*1
Delay time by timer setting for DO0
Delay time by timer setting for DO0
Delay time by timer setting for DO0
DO0 pin
(When E2PROM
CTR1 = 1)
Reload starts
*1
*1
*1
CTR0 register
(When E2PROM
CTR1 = 1)
Period to define data *2
*1. The value of control port register does not change even if the port output is inverted by timer action.
*2. A period to define data is; the loading period from E2PROM + the period to stabilize the output from DO7 to DO0 pin =
within 100 µs.
Figure 18 Example of Condition to Start Timer Action 1
16
Seiko Instruments Inc.
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
Rev.1.1_00
S-7750C
Figure 19 shows the timing chart of 4 and 5.
In the S-7750C, when the power supply voltage reaches the level of detection voltage of the circuit for prevention
malfunction by low voltage (1.75 V typ.), the DO7 to DO0 pins and the register go in “L”. After that, the power supply
voltage reaches the level of release voltage of the circuit for prevention malfunction by low voltage (2.05 V typ.), data is
loaded to the register from the E2PROM so that the timer action starts. Regarding the circuit for prevention malfunction by
low voltage, refer to “ Action of Circuit for Prevention Malfunction by Low Voltage”.
When the S-7750C receives the reload command, the register is initialized so that the DO7 to DO0 pins once go in “L”.
When it receives a stop condition, data is loaded to the register from the E2PROM so that the DO7 to DO0 pins output the
default value. At this moment, the timer action starts thus output from DO7 to DO0 pins is inverted after the period set by
timer.
Power supply
2.05 V Typ.
1.75 V Typ.
voltage
VCCH / VCCL
Signal of low power
supply voltage
detection
TIMEN pin
Data loading
Exceeded the release voltage
of low supply voltage detection
(2.05 V); Timer action starts
Time out
Time out
Oscillation circuit EN
Device code
ACK
Start condition
Reload instruction
Stop condition
SDA
SCL
Delay time by timer setting for DO1
Delay time by timer setting for DO1
DO1 pin
(When E2PROM
CTR1 = 0)
*2
*2
Reload starts
Reload starts
*3
CTR1 register
(When E2PROM
CTR1 = 0)
*1
*1
Delay time by timer setting for DO0
Delay time by timer setting for DO0
DO0 pin
(When E2PROM
CTR1 = 1)
Reload starts
*1
Reload starts
*1
*3
CTR0 register
(When E2PROM
CTR1 = 1)
Period to define data*4
Period to define data *4
*1. The value of control port register does not change even if the port output is inverted by timer action.
*2. Goes in “L” once during S-7750C recognizing the reload command to receiving a stop condition.
*3. Goes in “L” when the power supply voltage reaches the level of the circuit for prevention malfunction by low voltage.
*4. A period to define data is; the loading period from E2PROM + the period to stabilize the DO7 to DO0 pin = within 100 µs.
Figure 19 Example of Condition to Start Timer Action 2
17
Seiko Instruments Inc.
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
S-7750C
Rev.1.1_00
Flowchart of Data Loading from E2PROM and Timer Action
Power-on
Loading each data from
E2PROM to register
DO pin outputs default value
No
TIMEN pin = “H”?
Yes
No
TIMEN pin
“L” → “H”?
Yes
No
Timer setting register is
in “1”?
Yes
Timer action starts
DO output inverts after
set time has elapsed
No
TIMEN pin
“H” → “L”?
Yes
No
Timer enable register
“0” → “1”?
Yes
Figure 20 Flowchart of S-7750C’s Action
18
Seiko Instruments Inc.
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
Rev.1.1_00
S-7750C
Operation
1. Start condition
A start condition starts by changing the SDA line from “H” to “L” while the SCL line is “H”. Input a start condition first
when inputting a command via I2C-bus interface.
2. Stop condition
A stop condition starts by changing the SDA line from “L” to “H” while the SCL line is “H”. Input a stop condition in the
end when inputting a command via I2C-bus interface.
“H”
“H”
SCL
SDA
Start Condition
Stop Condition
Figure 23 Start / Stop Condition
3. Data transfer
The S-7750C loads data in the SDA line at a rising edge of the SCL line.
Change the SDA line while the SCL line is “L” during the data transmission.
If changing the SDA line while the SCL line is “H”, the S-7750C goes in the start or stop condition status.
SCL
SDA
“L”
“L”
“L”
Figure 24 Data Transfer Timing
19
Seiko Instruments Inc.
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
S-7750C
Rev.1.1_00
4. Acknowledgment
Data is transmitted sequentially in 8-bit. Changing the SDA line to “L” indicates that the devices on the system bus
have received data, thus the devices send an acknowledgment signal back during the 9th clock of cycle.
The S-7750C does not send an acknowledgment signal back during the Write operation.
SCL
(Input)
1
8
9
SDA
(Master device
’
s output)
Acknowledgment
signal output
SDA
(Output)
Start
Condition
Figure 23 Acknowledgment Output Timing 1
The both commands, reload command and switching access to register / E2PROM command are 1-byte, but inputting them
as the command 2-byte or more is possible by adding dummy data. However, the S-7750C executes the command at the
moment that it has loaded 9-bit. And in this case, inputting clock 2-byte or more after inputting these commands makes the
SDA pin set in high-impedance. However, in the acknowledgment timing, S-7750C sends acknowledgment signal back
regardless of the setting atR / W bit. Figure 24 shows the output timing of acknowledgment signal.
Start Condition
Stop Condition
SCL
SDA
High-Impedance
High-Impedance
Device Code
R / W
Acknowledgement Signal from S-7750C
Command
(0000 or 0001)
Figure 24 Acknowledgment Output Timing 2
20
Seiko Instruments Inc.
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
Rev.1.1_00
S-7750C
5. Read operation
When the S-7750C receives the 7-bit device address and the Read / Write instruction code “1” after receiving a start
condition, it generates an acknowledgment signal.
Next, 8-bit data is output from the S-7750C synchronizing with the SCL clock.
After that, the master device sends a stop condition, not an acknowledgment signal in order to finish the Read
operation.
NO ACK from
Master Device
S
T
A
R
T
R
E
A
D
S
T
O
P
DEVICE
DATA
ADDRESS
D
C
0
TA
/
D
C
2
D
C
1
SDA LINE
B7 B6 B5 B4 B3 B2 B1 B0
C2 C1 C0 1
C
M
S
B
L
S
B
R
A
C
K
/
W
Figure 25 Read
6. Write operation
6. 1 Write
When the S-7750C receives the 7-bit device address and the Read / Write instruction code “0” after receiving a start
condition, it generates an acknowledgment signal.
Next, after it receives the 8-bit word address and generates an acknowledgment signal, it receives a stop condition to
finish the Write command.
In the Write operation to the E2PROM, the Write operation starts with a stop condition, the S-7750C finishes it after
the period to Write (max. 5 ms) has elapsed. During Write to the E2PROM, all operations are inhibited to be performed
and the S-7750C does not send back any acknowledgment signals for command inputs.
W
R
I
S
T
A
R
T
S
T
T
E
O
P
DEVICE
ADDRESS
DATA
D
C
1
D
D
C
2
TA
/
C
0
SDA LINE
0
B7 B6 B5 B4 B3 B2 B1 B0
C2 C1 C0
C
M
S
B
L
S
B
R
/
W
A
C
K
A
C
K
Remark Users are not necessary to input data (8-bit) and the next acknowledgment for the reload command, the
switching access to register / E2PROM command. If inputting data in this timing, data is regarded as
dummy, the next acknowledgement signal is generated.
Figure 26 Byte write
21
Seiko Instruments Inc.
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
S-7750C
Rev.1.1_00
6. 2 Write Protect
Write protect is available in the S-7750C. When the WP pin is connected to VCCH, the Write operation in all memory
area is inhibited. When the WP pin is connected to GND, Write protect becomes invalid so that the Write operation in
all memory area is accepted.
Fix the WP pin during the period; from rising of SCL at installing the last bit (B0) in Write data until the completion of
Write period (max. 5 ms). Written data in the address is not assured if the condition of the WP pin is changed during
this period. Be sure to connect the WP pin to GND when you don’t use Write Protect. Write Protect is valid in the
range of power supply voltage.
tWR
SCL
SDA
WP
B0
Stop
Start
Acknowledgment
signal
Condition
Condition
Write Data
Period to fix WP pin
Figure 27 Period to Fix WP Pin
6. 3 Acknowledgment polling
Acknowledge polling is used to find when the Write operation has completed. After receiving a stop condition the Write
operation has once started, all operations are inhibited to be performed so that the S-7750C cannot respond to the
signals transmitted from the master device. The master device sends a start condition, the device address and Read /
Write instruction code to the S-7750C (slave device), and detects the response from the slave device. It is possible to
find when the Write operation has completed. Thus if the slave device does not send an acknowledgment signal back,
the Write operation is in progress. If it sends an acknowledgment signal back, the Write operation has completed. Fix
the WP pin until an acknowledgment is confirmed. It is recommended to use the Read instruction “1” for the Read /
Write instruction code transmitted from the master device during acknowledgment polling.
6. 4 Irregular action
In the middle of inputting Write data, if inputting a stop condition in clock less than the specified data length (8-bit), the
S-7750C does not perform Write to the E2PROM. And it either does not perform Write to the E2PROM if receiving a
stop condition after receiving data over 9-bit. However, data in the register has been rewritten at the point when the
S-7750C has received the specified length data. Be sure not to input clock which exceeds the specified value due to
noise or other causes.
22
Seiko Instruments Inc.
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
Rev.1.1_00
S-7750C
Example of Flowchart for Software
1. Read / Write in register
The example of flowchart for software when accessing to the control port register is shown in Figure 28.
START
1-byte command
(ST, DC2 to DC0, 0001, 0, ACK, SP)*1
Switching access to
E2PROM / register
2-byte command
Access to
control port register
• Write
(ST, DC2 to DC0, 0101, 0, ACK, CTR7 to CTR0, ACK, SP)*1
• Read
(ST, DC2 to DC0, 0101, 1, ACK, CTR7 to CTR0, ACK, SP)*1
END
*1. ST
DC2 to DC0
ACK
: Start condition
: Device code
: Acknowledgment
CTR7 to CTR0 : Control port register
SP
: Stop condition
Figure 28 Flowchart for Software Example 1
2. Read / Write in E2PROM
The example of flowchart for software when accessing to the E2PROM is shown in Figure 29.
START
WP pin = “L”?
No
Yes
1-byte command
Switching access to
(ST, DC2 to DC0, 0001, 1, ACK, SP)*1
E2PROM / register
2-byte command
Access to
control port E2PROM
• Write
(ST, DC2 to DC0, 0101, 0, ACK, CTR7 to CTR0, ACK, SP)*1
• Read
(ST, DC2 to DC0, 0101, 1, ACK, CTR7 to CTR0, ACK, SP)*1
END
*1. ST
DC2 to DC0
ACK
: Start condition
: Device code
: Acknowledgment
CTR7 to CTR0 : Control port register
SP
: Stop condition
Figure 29 Flowchart for Software Example 2
23
Seiko Instruments Inc.
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
S-7750C
Rev.1.1_00
Action of Circuit for Prevention Malfunction by Low Voltage
The S-7750C has a detection circuit which works with the low power supply voltage, cancels Write in order to reset the
internal circuit when power-on and the power supply voltage is dropping. When the power supply voltage is restored and
exceeds the level of release voltage, the S-7750C automatically reloads command. The detection voltage is 1.75 V typ.,
the release voltage is 2.05 V typ., its hysteresis width is approx. 0.3 V. Refer to Figure 30.
The S-7750C cancels Write by detecting a low power supply voltage when it receives a stop condition. Both in the data
transmission and the Write operation, data in the address written during the low power supply voltage is not assured.
Starts reloading command automatically
Hysteresis width
approx. 0.3 V
Power supply voltage
Release voltage (+VDET
2.05 V Typ.
)
Detection voltage (−VDET
1.75 V Typ.
)
Cancel the Write instruction /
Internal circuit in reset
Figure 30 Action during Low Power Voltage
24
Seiko Instruments Inc.
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
Rev.1.1_00
S-7750C
How to Use S-7750C
1. SDA I/O pin and SCL input pin
In consideration of I2C-bus protocol function, the SDA I/O and SCL input pins*1 should be connected with a pull-up
resister of approx.1 to 5 kΩ.
The S-7750C cannot transmit normally without using a pull-up resistor.
*1. In the case that the SCL input pin of the S-7750C is connected to the tri-state output pin in the master device,
connect the SCL input pin with a pull-up resistor as well in order not to set the SCL input pin in high impedance.
This prevents the S-7750C from error caused by high impedance from the tri-state pin when resetting the master
device during the voltage drop.
2. Reset after transmission interruption
The S-7750C does not have a pin to reset, but it generally resets the internal circuit by inputting a stop or start
condition. However, in case that transmission is interrupted, for example, only the master device is reset because the
power supply voltage drops during transmission; the internal circuit maintains the status before interruption. If the
status is that the SDA pin outputs “L” (outputs an acknowledge signal or in Read), the S-7750C does not perform the
next operation because it cannot receive a start or stop condition from the master device. Therefore it is necessary to
finish outputting an acknowledgment signal and the Read operation in SDA. Figure 31 shows how to reset.
First, input a start condition. (While the SDA pin is outputting “L”, the S-7750C does not go in the start condition but
this “L” output does not affect on the slave device.) Next, input clock (27 clocks) which is equivalent to 3-byte data
access from the SCL pin. During this procedure, pull up the SDA line which is connected closer to the master device.
Due to this, the SDA pin’s I/O prior to transmission interruption ends so that the SDA pin goes in “H”. After that, by
inputting a stop condition, the S-7750C returns to the status possible to perform the general transmission. It is
recommended to perform this reset when you initialize, after power-on the master device. A circuit for prevention
malfunction by a low power supply voltage is equipped in the S-7750C, thus it automatically resets internally when a
low voltage is applied to the S-7750C.
Start
Condition
Stop
Condition
Clock equivalent to 3-byte data access
1
2
8
9
26
27
SCL
SDA
Master
SDA
Slave
“L” or
“High-Z”
“L” or
“High-Z”
“L” or
“High-Z”
“High-Z” “High-Z”
“High-Z”
Figure 31 How to Reset S-7750C
25
Seiko Instruments Inc.
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
S-7750C
Rev.1.1_00
3. Acknowledgment check
The I2C-bus protocol includes an acknowledgment check function as a handshake function to prevent a
communication error. This function allows detection of a communication failure during data communication between
the master device and the S-7750C.
4. Power-on-clear circuit
The S-7750C has a power-on-clear circuit that initializes itself at the same time during power-on. Unsuccessful
initialization may cause a malfunction. To operate the power-on-clear circuit normally, the following conditions must be
satisfied to raise the power supply voltage.
4. 1 Raising power supply voltage
As shown in Figure 32, raise the power supply voltage from 0.2 V max., within the time defined as tRISE which is the
time required to reach the power supply voltage to be set.
For example, if the power supply voltage is 3.0 V, tRISE = 100 ms as seen in Figure 33. The power supply voltage
must be raised within 100 ms.
tRISE (Max.)
Power supply voltage (VCCH
)
VINIT (Max.)
0.2 V
0 V*1
tINIT*2 (Max.)
*1. 0 V means there is no difference in potential between the VCCH pin and the VSS
pin of the S-7750C.
*2. tINIT is the time required to initialize the S-7750C. No instructions are accepted
during this time.
Figure 32 Raising Power Supply Voltage
26
Seiko Instruments Inc.
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
Rev.1.1_00
S-7750C
5.0
4.0
3.0
2.0
Power supply voltage(VCCH
[V]
)
50
100 150
200
Rise time (tRISE) Max.
[ms]
For example:
If your S-7750C’s supply voltage = 3.0 V, raise the power supply voltage to 3.0 V within 100 ms.
Figure 33 Raising Time of Power Supply Voltage
When initialization is successfully completed by the power-on-clear circuit, the S-7750C enters the standby status.
If the power-on-clear circuit does not operate, the followings are the possible causes.
(1)
(2)
Because the S-7750C has not completed initialization, an instruction previously input is still valid or an
instruction may be inappropriately recognized. In this case, S-7750C may perform the Write operation.
The voltage drops due to power off while the S-7750C is being accessed. Even if the master device is reset
due to the low power voltage, the S-7750C may malfunction unless the conditions for the power-on-clear
operation are satisfied. Regarding the conditions for the power-on clear operation, refer to “4.1 Raising
power supply voltage”.
27
Seiko Instruments Inc.
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
S-7750C
Rev.1.1_00
4. 2 Initialization time
The S-7750C initializes at the same time when the power supply voltage is raised. Input instructions to the S-7750C
after initialization. The S-7750C does not accept any instruction during initialization.
Figure 34 shows the initialization time of the S-7750C.
(Condition : VCCH = 3.0 V, Ta = 25°C)
100 m
10 m
S-7750C initialization
1.0 m
time (tINIT) Max.
[s]
100 µ
10 µ
1.0 µ
1.0 µ 10 µ 100 µ 1.0 m 10 m 100 m
Rise time (tRISE
[s]
)
Figure 34 Initialization Time
5. Data hold time (tHD. DAT = 0 ns)
If SCL and SDA of the S-7750C are changed at the same time, the timing which takes to reach the S-7750C slightly
lags due to a load on the bus line. As a result, the change in the SDA precedes a falling edge of SCL so that
S-7750C may recognize a start/stop condition.
To avoid this, in the S-7750C, it is recommended to set the delay time of over 0.3 µs for a falling edge of SCL.
In its specs, it is described as the S-7750C works at 0 ns of data hold time, however, take account into the above
action in actual use.
tHD. DAT = 0.3 µs Min.
SCL
SDA
Figure 35 Data Hold Time
28
Seiko Instruments Inc.
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
Rev.1.1_00
S-7750C
6. SDA pin and SCL pin noise suppression time
The S-7750C includes a built-in low-pass filter at the SDA and SCL pins to suppress noise.
This filter suppresses noise with the width of less than 130 ns when the power supply voltage is 3.0 V.
Refer to noise suppression time (tl) in Table 9 regarding details of the assurable value.
400
300
Noise suppression time (tI) Max.
200
100
0
[ns]
2.0
3.0
4.0
5.0
Power supply voltage VCCH [V]
Figure 36 Noise Suppression Time for SDA and SCL Pins
29
Seiko Instruments Inc.
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
S-7750C
Rev.1.1_00
Precautions
• Semiconductor devices must be used within the absolute maximum rating. Special caution is required for the
supply voltage. A momentary surge voltage exceeding the rated value may cause latch-up and malfunction.
Confirm the detailed usage conditions required for each parameter by referring to the data sheet before use.
• If the S-7750C operates with moisture remaining in the circuits, a short circuit may occur between pins, causing a
malfunction. When the S-7750C is taken out of the constant-low-temperature bath during evaluation, the pins of
the S-7750C may be frosted. Note that, if the S-7750C is operated with the pins frosted, the pins may be
short-circuited by moisture, causing a malfunction.
The same applies when the S-7750C is used in an environment where condensation may occur, so care is required.
• Although the IC contains a static electricity protection circuit, static electricity that exceeds the limit of the protection
circuit should not be applied.
• Seiko Instruments Inc. assumes no responsibility for the way in which this IC is used in products created using this
IC or for the specifications of that product, nor does Seiko Instruments Inc. assume any responsibility for any
infringement of patents or copyrights by products that include this IC either in Japan or in other countries.
Precautions for WLP Package
• The device’s silicon substrate side is exposed to the marking side of the device package. Since this portion has a
lower strength against mechanical stress than a standard plastic package, take sufficient care to avoid chips and
cracks when handling the package. Moreover, the exposed side of the silicon has the electrical potential of the
device substrate, and needs to be kept out of contact with the external potential.
• In this package, the transistor area side is overcoated with a translucent resin. Keep in mind that the characteristics
of the package may be affected if the device is exposed under an intensive light source.
30
Seiko Instruments Inc.
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
Rev.1.1_00
S-7750C
Option
Three options which are available for the S-7750C and the option tables are shown here. When selecting the option,
follow these descriptions.
1. Device code (8 types)
Selecting the arbitrary device address code is available (Refer to Figure 10).
Table 12 Option List of Device Code
No.
(0)
(1)
(2)
(3)
(4)
(5)
(6)
(7)
C2
0
0
0
0
1
1
1
C1
0
0
1
1
0
0
1
C0
0
1
0
1
0
1
0
1
1
1
2. Internal generation of oscillation clock / External input
The S-7750C incorporates an oscillator for generating delay time. Instead of using the oscillator, an external
oscillation clock can be used for the delay time.
Table 13 Option List of Oscillation Clock
No.
(1)
(2)
Internal / External
Using an internal oscillation circuit
Using an external oscillation circuit
3. Delay time
The delay time can be selected between A: ×1 and B: ×2. (T’: Oscillation clock cycle (5 µs when using the internal
oscillation circuit)).
Table 14 Option List of Delay Time
Timer scale setting register
No.
Delay
1: Delay time for short-time setting (T)
0: Delay time for long-time setting (LT)
A
B
×1
×2
T’×1
T’×2
T’×64
T’×128
31
Seiko Instruments Inc.
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
S-7750C
Rev.1.1_00
Option Format
When you order the option, fill these tables and contact us. Regarding the details, refer to “ Option”.
1. Switching of device codes
No.
C2
C1
C0
2. Switching of clock for oscillation to internal generation or external input
No.
Internal / External
3. Switching of delay time option
No.
×1 / ×2
Table for Write data to E2PROM
Please fill this table and send to our sales office when you order Write data to E2PROM.
E2PROM (Command code)
Free area 1 (0100)
Control port (0101)
Timer scale setting (0110)
Free area 2 (0111)
Timer setting for DO0(1000)
Timer setting for D1 (1001)
Timer setting for D2 (1010)
Timer setting for D3 (1011)
Timer setting for D4 (1100)
Timer setting for D5 (1101)
Timer setting for D6 (1110)
Timer setting for D7 (1111)
Write data
Default
FFH
00H
FFH
FFH
00H
00H
00H
00H
00H
00H
00H
00H
Remark
−
−
1: Short-time, 0: Long-time
−
1 for time that you select, 0 for others
1 for time that you select, 0 for others
1 for time that you select, 0 for others
1 for time that you select, 0 for others
1 for time that you select, 0 for others
1 for time that you select, 0 for others
1 for time that you select, 0 for others
1 for time that you select, 0 for others
32
Seiko Instruments Inc.
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
Rev.1.1_00
S-7750C
Product Name Structure
S-7750C
x
x
xx
−
HCT1
Package name (abbreviation) and IC packing specifications
HCT1: WLP-16A, Tape
E2PROM code
Clock for oscillation circuit, delay time option
0: internal oscillation circuit, delay time; x1
1: internal oscillation circuit, delay time; x2
2: external oscillation circuit, delay time; x1
3: external oscillation circuit, delay time; x2
Device code : 0 to 7
Marking Specification
(1) WLP-16A
WLP-16A
(1), (2) :
Lot number
4
3
C
1 0
(1) (2)
This is an example in S-7750C4103
33
Seiko Instruments Inc.
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
S-7750C
Rev.1.1_00
Characteristics (Typical Data)
1. DC Characteristics
1. 1 Current consumption (READ) ICC1
vs. Ambient temperature Ta
1. 2 Current consumption (READ) ICC1
vs. Ambient temperature Ta
0.4
0.4
VCCH = 4.5 V
VCCH = 3.0 V
fSCL = 400 kHz
fSCL = 400 kHz
0.3
0.2
0.1
0
0.3
0.2
0.1
0
−40
0
85
−40
0
85
Ta [°C
]
Ta [°C]
1. 3 Current consumption (READ) ICC1
vs. Ambient temperature Ta
1. 4 Current consumption (READ) ICC1
vs. Power supply voltage VCCH
0.4
0.06
V
CCH = 2.3 V
Ta = 25°C
fSCL = 400 kHz
fSCL = 400 kHz
0.3
0.2
0.1
0
0.04
0.02
0
−
40
0
85
2
3
4
5
Ta [°C
]
VCCH [V]
1. 5 Current consumption (PROGRAM) ICC2
vs. Ambient temperature Ta
1. 6 Current consumption (PROGRAM) ICC2
vs. Ambient temperature Ta
0.3
0.3
V
CCH = 4.5 V
VCCH = 3.0 V
0.2
0.1
0
0.2
0.1
0
−
40
0
85
−
40
0
85
Ta [°C
]
Ta [°C]
34
Seiko Instruments Inc.
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
Rev.1.1_00
S-7750C
1. 7 Current consumption (PROGRAM) ICC2
vs. Ambient temperature Ta
1. 8 Current consumption (PROGRAM) ICC2
vs. Power supply voltage VCCH
0.3
0.3
VCCH = 2.3 V
Ta = 25°C
0.2
0.1
0
0.2
0.1
0
−40
0
85
2
3
4
5
Ta [°C
]
VCCH [V]
1. 9 Internal oscillator current consumption during operation ICC3 1. 10 Internal oscillator current consumption during operation ICC3
vs. Ambient temperature Ta
vs. Ambient temperature Ta
0.06
0.06
VCCH = 4.5 V
VCCH = 3.0 V
0.04
0.02
0
0.04
0.02
0
−40
0
85
−40
0
85
Ta [°C
]
Ta [°C]
1. 11 Internal oscillator current consumption during operation ICC3 1. 12 Internal oscillator current consumption during operation ICC3
vs. Ambient temperature Ta
vs. Power supply voltage VCCH
0.06
0.06
VCCH = 2.3 V
Ta = 25°C
0.04
0.02
0
0.04
0.02
0
−40
0
85
2
3
4
5
Ta [°C
]
VCCH [V]
35
Seiko Instruments Inc.
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
S-7750C
Rev.1.1_00
1. 13 Standby current consumption ISB
1. 14 Input leakage current ILI
vs. Ambient temperature Ta
vs. Ambient temperature Ta
3.0
1.5
VCCH = 4.5 V
VCCH = 4.5 V
SCL, WP, TIMEN, CLK = 0 V
2.0
1.0
0
1.0
0.5
0
−40
0
85
−40
0
85
Ta [°C
]
Ta [°C]
1. 15 Input leakage current ILI
vs. Ambient temperature Ta
1. 16 Output leakage current ILO
vs. Ambient temperature Ta
1.5
1.5
V
CCH = 4.5 V
VCCH = 4.5 V
SCL, WP, TIMEN, CLK = 4.5 V
SDA = 0 V
1.0
0.5
0
1.0
0.5
0
−40
0
85
−40
0
85
Ta [°C
]
Ta [°C]
1. 17 Output leakage current ILO
vs. Ambient temperature Ta
1. 18 Low level output voltage VOL1
vs. Low level output current IOL
1.5
0.4
V
CCH = 4.5 V
Ta = −40°C
SDA
SDA = 4.5 V
0.3
1.0
0.5
0
0.2
V
CCH = 2.3 V
0.1
0
V
CCH = 4.5 V
−40
0
85
0
1
2
I
3
4
5
Ta [°C
]
OL [mA]
36
Seiko Instruments Inc.
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
Rev.1.1_00
S-7750C
1. 19 Low level output voltage VOL1
vs. Low level output current IOL
1. 20 Low level output voltage VOL1
vs. Low level output current IOL
0.4
0.4
Ta = 25°C
SDA
Ta = 85°C
SDA
0.3
0.3
V
CCH = 2.3 V
0.2
0.1
0
0.2
0.1
0
V
CCH = 2.3 V
V
CCH = 4.5 V
V
CCH = 4.5 V
0
1
2
I
3
4
5
0
1
2
I
3
4
5
OL [mA]
OL [mA]
1. 21 Low level output voltage VOL2
1. 22 Low level output voltage VOL2
vs. Low level output current IOL
vs. Low level output current IOL
0.10
0.10
Ta = −40°C
DO
Ta = 25°C
DO
0.05
0.05
V
CCH = 2.3 V
V
CCH = 2.3 V
V
CCH = 4.5 V
VCCH = 4.5 V
0
0
0
200
400
OL [µA]
600
0
200
400
IOL [µA]
600
I
1. 23 Low level output voltage VOL2
vs. Low level output current IOL
1. 24 High level output voltage VOH2
vs. High level output current IOH
0.10
5
Ta = 85°C
DO
V
CCL = 4.5 V
4
3
2
1
0
Ta = −40°C
V
CCH = 4.5 V
0.05
DO
VCCH = 2.3 V
V
CCL = 2.0 V
V
CCL = 1.5 V
V
CCH = 4.5 V
0
0
200
400
OL [µA]
600
−
600
−
400
−
200
0
I
I
OH [µA]
37
Seiko Instruments Inc.
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
S-7750C
Rev.1.1_00
1. 25 High level output voltage VOH2
1. 26 High level output voltage VOH2
vs. High level output current IOH
vs. High level output current IOH
3
5
Ta = −40°C
V
DO
CCH = 2.3 V
V
CCL = 4.5 V
4
3
2
1
0
V
CCL = 2.0 V
Ta = 25°C
2
1
0
V
CCH = 4.5 V
DO
V
CCL = 1.5 V
V
CCL = 2.0 V
V
CCL = 1.5 V
−
600
−
400
−
200
0
−
600
−
400
−
200
0
I
OH [µA]
IOH [µA]
1. 27 High level output voltage VOH2
vs. High level output current IOH
1. 28 High level output voltage VOH2
vs. High level output current IOH
3
5
Ta = 25°C
V
DO
CCH = 2.3 V
V
CCL = 4.5 V
4
3
2
1
0
V
CCL = 2.0 V
Ta = 85°C
2
1
0
V
CCH = 4.5 V
DO
V
CCL = 1.5 V
V
CCL = 2.0 V
V
CCL = 1.5 V
−
600
−
400
−
200
0
−
600
−
400
−
200
0
I
OH [µA]
IOH [µA]
1. 29 High level output voltage VOH2
vs. High level output current IOH
1. 30 High level input inversion voltage VIH
vs. Power supply voltage VCCH
3
3
Ta = 85°C
Ta = 25°C
SDA, SCL
V
CCH = 2.3 V
DO
V
CCL = 2.0 V
2
1
0
2
1
0
V
CCL = 1.5 V
−
600
−
400
−
200
0
0
2
4
6
I
OH [µA]
VCCH [V]
38
Seiko Instruments Inc.
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
Rev.1.1_00
S-7750C
1. 31 High level input inversion voltage VIH
vs. Ambient temperature Ta
1. 32 Low level input inversion voltage VIL
vs. Power supply voltage VCCH
3
3
VCCH = 4.5 V
Ta = 25°C
SDA, SCL
SDA, SCL
2
1
0
2
1
0
−40
0
85
0
2
4
6
Ta [°C
]
VCCH [V]
1. 33 Low level input inversion voltage VIL
vs. Ambient temperature Ta
1. 34 Low power supply detection voltage −VDET
vs. Ambient temperature Ta
3
3
2
1
0
V
CCH = 4.5 V
SDA, SCL
2
1
0
−40
0
85
−40
0
85
Ta [°C
]
Ta [°C]
1. 35 Low power supply release voltage +VDET
vs. Ambient temperature Ta
3
2
1
0
−40
0
85
Ta [°C
]
39
Seiko Instruments Inc.
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
S-7750C
Rev.1.1_00
2. AC Characteristics
2. 1 Maximum operating frequency fMAX.
vs. Power supply voltage VCCH
2. 2 Write time tWR vs. Power supply voltage VCCH
10000k
3
2
1
0
Ta = 25°C
Ta = 25°C
1000k
100k
10k
1k
2
3
4
5
2
3
4
5
V
CCH [V]
V
CCH [V]
2. 3 Write time tWR vs. Ambient temperature Ta
2. 4 Write time tWR vs. Ambient temperature Ta
3
3
V
CCH = 4.5 V
VCCH = 2.3 V
2
1
0
2
1
0
−40
0
85
−40
0
85
Ta [°C
]
Ta [°C]
2. 5 SDA output delay time tAA
vs. Ambient temperature Ta
2. 6 SDA output delay time tAA
vs. Ambient temperature Ta
1.0
1.0
V
CCH = 4.5 V
VCCH = 2.3 V
0.5
0.5
0
0
−40
0
85
−40
0
85
Ta [°C
]
Ta [°C]
40
Seiko Instruments Inc.
1.93±0.02
0.4±0.02
0.60max.
S
ø0.25±0.02
0.15±0.03
0.06 S
0.5
B
16-(ø0.25)
1
2
3
4
M
A B
S
ø0.05
A
B
C
D
No. HA016-A-P-SD-1.1
WLP-16A-A-PKG Dimensions
HA016-A-P-SD-1.1
TITLE
No.
SCALE
UNIT
Seiko Instruments Inc.
+0.1
-0
4.0±0.1
2.0±0.05
0.18±0.05
ø1.5
ø0.5±0.05
0.75±0.05
4.0±0.1
2.0±0.1
Count mark (ø0.8,Depth 0.2)
(Every 10 pockets)
0.8
2.32
0.22
2.02±0.05
0.6
A4 A3 A2 A1
D4 D3 D2 D1
Feed direction
No. HA016-A-C-S2-1.0
WLP-16A-A-Carrier Tape
HA016-A-C-S2-1.0
TITLE
No.
SCALE
UNIT
Seiko Instruments Inc.
12.5max.
9.0±0.3
Enlarged drawing in the central part
ø13±0.2
No. HA016-A-R-SD-1.0
TITLE
WLP-16A-A-Reel
HA016-A-R-SD-1.0
No.
3,000
SCALE
UNIT
QTY.
mm
Seiko Instruments Inc.
·
·
The information described herein is subject to change without notice.
Seiko Instruments Inc. is not responsible for any problems caused by circuits or diagrams described herein
whose related industrial properties, patents, or other rights belong to third parties. The application circuit
examples explain typical applications of the products, and do not guarantee the success of any specific
mass-production design.
·
·
·
When the products described herein are regulated products subject to the Wassenaar Arrangement or other
agreements, they may not be exported without authorization from the appropriate governmental authority.
Use of the information described herein for other purposes and/or reproduction or copying without the
express permission of Seiko Instruments Inc. is strictly prohibited.
The products described herein cannot be used as part of any device or equipment affecting the human
body, such as exercise equipment, medical equipment, security systems, gas equipment, or any apparatus
installed in airplanes and other vehicles, without prior written permission of Seiko Instruments Inc.
Although Seiko Instruments Inc. exerts the greatest possible effort to ensure high quality and reliability, the
failure or malfunction of semiconductor products may occur. The user of these products should therefore
give thorough consideration to safety design, including redundancy, fire-prevention measures, and
malfunction prevention, to prevent any accidents, fires, or community damage that may ensue.
·
相关型号：
SI9130DB
5- and 3.3-V Step-Down Synchronous ConvertersWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9135LG-T1
SMBus Multi-Output Power-Supply ControllerWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9135LG-T1-E3
SMBus Multi-Output Power-Supply ControllerWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9135_11
SMBus Multi-Output Power-Supply ControllerWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9136_11
Multi-Output Power-Supply ControllerWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9130CG-T1-E3
Pin-Programmable Dual Controller - Portable PCsWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9130LG-T1-E3
Pin-Programmable Dual Controller - Portable PCsWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9130_11
Pin-Programmable Dual Controller - Portable PCsWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9137
Multi-Output, Sequence Selectable Power-Supply Controller for Mobile ApplicationsWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9137DB
Multi-Output, Sequence Selectable Power-Supply Controller for Mobile ApplicationsWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9137LG
Multi-Output, Sequence Selectable Power-Supply Controller for Mobile ApplicationsWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
SI9122E
500-kHz Half-Bridge DC/DC Controller with Integrated Secondary Synchronous Rectification DriversWarning: Undefined variable $rtag in /www/wwwroot/website_ic37/www.icpdf.com/pdf/pdf/index.php on line 217
-
VISHAY
©2020 ICPDF网 联系我们和版权申明