概述
数据手册CAT24WC01L-TE13C 概述
1K/2K/4K/8K/16K-Bit Serial E2PROM 1K / 2K / 4K / 8K / 16K位串行E2PROM
CAT24WC01L-TE13C 数据手册
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PDF下载CAT24WC01/02/04/08/16
1K/2K/4K/8K/16K-Bit Serial E2PROM
FEATURES
■ Self-Timed Write Cycle with Auto-Clear
■ 1,000,000 Program/Erase Cycles
■ 100 Year Data Retention
■ 400 KHZ I2C Bus Compatible*
■ 1.8 to 6.0Volt Operation
■ Low Power CMOS Technology
■ 8-pin DIP, 8-pin SOIC or 8 pin TSSOP
■ Write Protect Feature
■ Commercial, Industrial and Automotive
— Entire Array Protected When WP at VIH
Temperature Ranges
■ Page Write Buffer
DESCRIPTION
08/16 feature a 16-byte page write buffer. The device
operates via the I2C bus serial interface, has a special
write protection feature, and is available in 8-pin DIP, 8-
pin SOIC or 8-pin TSSOP.
The CAT24WC01/02/04/08/16 is a 1K/2K/4K/8K/16K-
bit Serial CMOS E2PROM internally organized as 128/
256/512/1024/2048 words of 8 bits each. Catalyst’s
advanced CMOS technology substantially reduces de-
vice power requirements. The the CAT24WC01/02/04/
PIN CONFIGURATION
BLOCK DIAGRAM
SOIC Package (J)
DIP Package (P)
EXTERNAL LOAD
1
2
3
4
8
7
6
5
1
2
3
4
8
7
6
5
A
A
A
V
A
A
A
0
1
2
CC
0
1
2
V
CC
WP
SENSE AMPS
SHIFT REGISTERS
D
OUT
WP
ACK
SCL
SDA
SCL
SDA
V
V
V
SS
CC
SS
WORD ADDRESS
BUFFERS
COLUMN
DECODERS
V
SS
5020 FHD F01
TSSOP Package (U)
(* Available for 24WC01 and 24WC02 only)
START/STOP
SDA
WP
LOGIC
1
2
3
4
8
7
6
5
A
A
A
0
1
2
V
CC
WP
E2PROM
XDEC
SCL
SDA
V
CONTROL
LOGIC
SS
PIN FUNCTIONS
DATA IN STORAGE
Pin Name
Function
A0, A1, A2
SDA
Device Address Inputs
Serial Data/Address
Serial Clock
HIGH VOLTAGE/
TIMING CONTROL
SCL
SCL
STATE COUNTERS
WP
Write Protect
SLAVE
ADDRESS
COMPARATORS
A
0
A1
A2
VCC
+1.8V to +6.0V Power Supply
Ground
VSS
24WCXX F03
2
* Catalyst Semiconductor is licensed by Philips Corporation to carry the I C Bus Protocol.
© 1999 by Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
Doc. No. 25051-00 3/98
S-1
1
CAT24WC01/02/04/08/16
ABSOLUTE MAXIMUM RATINGS*
*COMMENT
Temperature Under Bias ................. –55°C to +125°C
Storage Temperature....................... –65°C to +150°C
Stresses above those listed under “Absolute Maximum
Ratings” may cause permanent damage to the device.
These are stress ratings only, and functional operation of
the device at these or any other conditions outside of those
listed in the operational sections of this specification is not
implied. Exposure to any absolute maximum rating for
extended periods may affect device performance and
reliability.
Voltage on Any Pin with
Respect to Ground(1) ........... –2.0V to +VCC + 2.0V
VCC with Respect to Ground ............... –2.0V to +7.0V
Package Power Dissipation
Capability (Ta = 25°C) .................................. 1.0W
Lead Soldering Temperature (10 secs) ............ 300°C
Output Short Circuit Current(2) ........................ 100mA
RELIABILITY CHARACTERISTICS
Symbol
Parameter
Endurance
Min.
1,000,000
100
Max.
Units
Cycles/Byte
Years
Reference Test Method
MIL-STD-883, Test Method 1033
MIL-STD-883, Test Method 1008
MIL-STD-883, Test Method 3015
JEDEC Standard 17
(3)
NEND
(3)
TDR
Data Retention
ESD Susceptibility
Latch-up
(3)
VZAP
2000
Volts
(3)(4)
ILTH
100
mA
D.C. OPERATING CHARACTERISTICS
V
= +1.8V to +6.0V, unless otherwise specified.
CC
Limits
Typ.
Symbol
Parameter
Min.
Max.
Units
mA
µA
µA
µA
V
Test Conditions
fSCL = 100 KHz
ICC
Power Supply Current
3
(5)
ISB
Standby Current (VCC = 5.0V)
Input Leakage Current
0
10
VIN = GND or VCC
VIN = GND to VCC
VOUT = GND to VCC
ILI
ILO
Output Leakage Current
Input Low Voltage
10
VIL
–1
VCC x 0.3
VCC + 0.5
0.4
VIH
Input High Voltage
VCC x 0.7
V
VOL1
VOL2
Output Low Voltage (VCC = 3.0V)
Output Low Voltage (VCC = 1.8V)
V
IOL = 3 mA
0.5
V
IOL = 1.5 mA
CAPACITANCE T = 25°C, f = 1.0 MHz, V
= 5V
CC
A
Symbol
Test
Input/Output Capacitance (SDA)
Input Capacitance (A0, A1, A2, SCL, WP)
Max.
Units
Conditions
VI/O = 0V
VIN = 0V
(3)
CI/O
8
6
pF
pF
(3)
CIN
Note:
(1) The minimum DC input voltage is –0.5V. During transitions, inputs may undershoot to –2.0V for periods of less than 20 ns. Maximum DC
voltage on output pins is V +0.5V, which may overshoot to V + 2.0V for periods of less than 20ns.
CC
CC
(2) Output shorted for no more than one second. No more than one output shorted at a time.
(3) This parameter is tested initially and after a design or process change that affects the parameter.
(4) Latch-up protection is provided for stresses up to 100 mA on address and data pins from –1V to V +1V.
CC
(5) Standby Current (I ) = 0µA (<900nA).
SB
Doc. No. 25051-00 3/98 S-1
2
CAT24WC01/02/04/08/16
A.C. CHARACTERISTICS
V
CC
= +1.8V to +6.0V, unless otherwise specified.
Read & Write Cycle Limits
Symbol
Parameter
1.8V, 2.5V
4.5V-5.5V
Min.
Max.
Min.
Max.
Units
kHz
ns
FSCL
TI(1)
Clock Frequency
100
200
400
200
Noise Suppression Time
Constant at SCL, SDA Inputs
tAA
SCL Low to SDA Data Out
and ACK Out
3.5
1
µs
µs
(1)
tBUF
Time the Bus Must be Free Before
a New Transmission Can Start
4.7
1.2
tHD:STA
tLOW
Start Condition Hold Time
Clock Low Period
4
0.6
1.2
0.6
0.6
µs
µs
µs
µs
4.7
4
tHIGH
Clock High Period
tSU:STA
Start Condition Setup Time
4.7
(for a Repeated Start Condition)
tHD:DAT
tSU:DAT
Data In Hold Time
0
0
ns
ns
µs
ns
µs
ns
Data In Setup Time
50
50
(1)
tR
SDA and SCL Rise Time
SDA and SCL Fall Time
Stop Condition Setup Time
Data Out Hold Time
1
0.3
(1)
tF
300
300
tSU:STO
tDH
4
0.6
100
100
(1)(2)
Power-Up Timing
Symbol
tPUR
Parameter
Max.
Units
Power-up to Read Operation
Power-up to Write Operation
1
1
ms
ms
tPUW
Write Cycle Limits
Symbol
Parameter
Min.
Typ.
Max
Units
tWR
Write Cycle Time
10
ms
interface circuits are disabled, SDA is allowed to remain
high, and the device does not respond to its slave
address.
The write cycle time is the time from a valid stop
condition of a write sequence to the end of the internal
program/erase cycle. During the write cycle, the bus
Note:
(1) This parameter is tested initially and after a design or process change that affects the parameter.
(2) t
and t
are the delays required from the time V is stable until the specified operation can be initiated.
PUR
PUW
CC
Doc. No. 25051-00 3/98 S-1
3
CAT24WC01/02/04/08/16
FUNCTIONAL DESCRIPTION
PIN DESCRIPTIONS
The CAT24WC01/02/04/08/16 supports the I2C Bus
data transmission protocol. This Inter-Integrated Circuit
Bus protocol defines any device that sends data to the
bus to be a transmitter and any device receiving data to
be a receiver. Data transfer is controlled by the Master
device which generates the serial clock and all START
andSTOPconditionsforbusaccess.TheCAT24WC01/
02/04/08/16 operates as a Slave device. Both the Mas-
ter and Slave devices can operate as either transmitter
or receiver, but the Master device controls which mode
is activated. A maximum of 8 devices (24WC01 and
24WC02), 4 devices (24WC04), 2 devices (24WC08)
and 1 device (24WC16) may be connected to the bus as
determinedbythedeviceaddressinputsA0,A1,andA2.
SCL: Serial Clock
The CAT24WC01/02/04/08/16 serial clock input pin is
used to clock all data transfers into or out of the device.
This is an input pin.
SDA: Serial Data/Address
The CAT24WC01/02/04/08/16 bidirectional serial data/
address pin is used to transfer data into and out of the
device. The SDA pin is an open drain output and can be
wire-ORed with other open drain or open collector
outputs.
A0, A1, A2: Device Address Inputs
These inputs set device address when cascading mul-
tiple devices. When these pins are left floating the
default values are zeros (except for the 24WC01).
A maximum of eight devices can be cascaded when
Figure 1. Bus Timing
t
t
t
F
HIGH
R
t
t
LOW
LOW
SCL
t
t
SU:STA
HD:DAT
t
t
t
t
HD:STA
SU:DAT
SU:STO
BUF
SDA IN
t
t
AA
DH
SDA OUT
5020 FHD F03
Figure 2. Write Cycle Timing
SCL
SDA
8TH BIT
BYTE n
ACK
t
WR
STOP
CONDITION
START
CONDITION
ADDRESS
5020 FHD F04
Figure 3. Start/Stop Timing
SDA
SCL
5020 FHD F05
START BIT
STOP BIT
Doc. No. 25051-00 3/98 S-1
4
CAT24WC01/02/04/08/16
using either 24WC01 or 24WC02 device. All three
address pins are used for these densities. If only one
24WC02 is addressed on the bus, all three address pins
(A0, A1and A2) can be left floating or connected to VSS.
If only one 24WC01 is addressed on the bus, all three
address pins (A0, A1and A2) must be connected to VSS.
(2) During a data transfer, the data line must remain
stable whenever the clock line is high. Any changes
in the data line while the clock line is high will be
interpreted as a START or STOP condition.
START Condition
The START Condition precedes all commands to the
device, and is defined as a HIGH to LOW transition of
SDAwhenSCLisHIGH. TheCAT24WC01/02/04/08/16
monitortheSDAandSCLlinesandwillnotresponduntil
this condition is met.
A total of four devices can be addressed on a single bus
when using 24WC04 device. Only A1 and A2 address
pins are used with this device. The A0 address pin is a
no connect pin and can be tied to VSS or left floating. If
only one 24WC04 is being addressed on the bus, the
address pins (A1 and A2) can be left floating or con-
nected to VSS.
STOP Condition
A LOW to HIGH transition of SDA when SCL is HIGH
determinestheSTOPcondition.Alloperationsmustend
with a STOP condition.
Onlytwodevicescanbecascadedwhenusing24WC08.
TheonlyaddresspinusedwiththisdeviceisA2. TheA0
andA1addresspinsarenoconnectpinsandcanbetied
to VSS or left floating. If only one 24WC08 is being
addressed on the bus, the address pin (A2) can be left
floating or connected to VSS.
DEVICE ADDRESSING
The bus Master begins a transmission by sending a
START condition. The Master then sends the address
of the particular slave device it is requesting. The four
most significant bits of the 8-bit slave address are fixed
as 1010 for the CAT24WC01/02/04/08/16 (see Fig. 5).
Thenextthreesignificantbits(A2,A1,A0)arethedevice
addressbitsanddefinewhichdeviceorwhichpartofthe
devicetheMasterisaccessing. UptoeightCAT24WC01/
02, four CAT24WC04, two CAT24WC08, and one
CAT24WC16 may be individually addressed by the
system. The last bit of the slave address specifies
whether a Read or Write operation is to be performed.
When this bit is set to 1, a Read operation is selected,
and when set to 0, a Write operation is selected.
The 24WC16 is a stand alone device. In this case, all
address pins (A0, A1and A2) are no connect pins and
can be tied to VSS or left floating.
WP: Write Protect
If the WP pin is tied to VCC the entire memory array
becomes Write Protected (READ only). When the WP
pin is tied to VSS or left floating normal read/write opera-
tions are allowed to the device.
I2C BUS PROTOCOL
The following defines the features of the I2C bus proto-
col:
After the Master sends a START condition and the slave
address byte, the CAT24WC01/02/04/08/16 monitors
the bus and responds with an acknowledge (on the SDA
(1) Data transfer may be initiated only when the bus is
not busy.
Figure 4. Acknowledge Timing
SCL FROM
MASTER
1
8
9
DATA OUTPUT
FROM TRANSMITTER
DATA OUTPUT
FROM RECEIVER
START
ACKNOWLEDGE
5020 FHD F06
Doc. No. 25051-00 3/98 S-1
5
CAT24WC01/02/04/08/16
Figure 5. Slave Address Bits
24WC01/02
1
0
1
0
A2
A1
A0 R/W
24WC04
24WC08
24WC16
1
1
1
0
0
0
1
1
1
0
0
0
A2
A2
A1
a9
a8 R/W
a8 R/W
a8 R/W
a10 a9
*
A0, A1 and A2 correspond to pin 1, pin 2 and pin 3 of the device.
** a8, a9 and a10 correspond to the address of the memory array address word.
*** A0, A1 and A2 must compare to its corresponding hard wired input pins (pins 1, 2 and 3).
line) when its address matches the transmitted slave
WRITE OPERATIONS
address. The CAT24WC01/02/04/08/16 then performs
a Read or Write operation depending on the state of the
R/W bit.
Byte Write
In the Byte Write mode, the Master device sends the
START condition and the slave address information
(with the R/W bit set to zero) to the Slave device. After
the Slave generates an acknowledge, the Master sends
the byte address that is to be written into the address
pointer of the CAT24WC01/02/04/08/16. After receiving
another acknowledge from the Slave, the Master device
transmits the data byte to be written into the addressed
memory location. The CAT24WC01/02/04/08/16 ac-
knowledge once more and the Master generates the
STOP condition, at which time the device begins its
internalprogrammingcycletononvolatilememory.While
this internal cycle is in progress, the device will not
respond to any request from the Master device.
Acknowledge
Afterasuccessfuldatatransfer, eachreceivingdeviceis
requiredtogenerateanacknowledge.TheAcknowledg-
ing device pulls down the SDA line during the ninth clock
cycle, signaling that it received the 8 bits of data.
The CAT24WC01/02/04/08/16 responds with an ac-
knowledge after receiving a START condition and its
slave address. If the device has been selected along
with a write operation, it responds with an acknowledge
after receiving each 8-bit byte.
When the CAT24WC01/02/04/08/16 is in a READ mode
it transmits 8 bits of data, releases the SDA line, and
monitors the line for an acknowledge. Once it receives
this acknowledge, the CAT24WC01/02/04/08/16 will
continue to transmit data. If no acknowledge is sent by
theMaster, thedeviceterminatesdatatransmissionand
waits for a STOP condition.
Page Write
The CAT24WC01/02/04/08/16 writes up to 16 bytes of
data in a single write cycle, using the Page Write
operation. The Page Write operation is initiated in the
same manner as counter will ‘wrap around’ to address
Doc. No. 25051-00 3/98 S-1
6
CAT24WC01/02/04/08/16
theByteWriteoperation,howeverinsteadofterminating
after the initial word is transmitted, the Master is allowed
to send up to P (P=7 for 24WC01 and P=15 for
CAT24WC02/04/08/16)additionalbytes.Aftereachbyte
has been transmitted the CAT24WC01/02/04/08/16 will
respond with an acknowledge, and internally increment
the low order address bits by one. The high order bits
remain unchanged.
WRITE PROTECTION
The Write Protection feature allows the user to protect
against inadvertent programming of the memory array.
If the WP pin is tied to VCC, the entire memory array is
protected and becomes read only. The CAT24WC01/
02/04/08/16 will accept both slave and byte addresses,
but the memory location accessed is protected from
programmingbythedevice’sfailuretosendanacknowl-
edge after the first byte of data is received.
If the Master transmits more than P+1 bytes prior to
sendingtheSTOPcondition,theaddresscounter‘wraps
around’,andpreviouslytransmitteddatawillbeoverwrit-
ten.
READ OPERATIONS
OnceallP+1bytesarereceivedandtheSTOPcondition
has been sent by the Master, the internal programming
cycle begins. At this point all received data is written to
the CAT24WC01/02/04/08/16 in a single write cycle.
The READ operation for the CAT24WC01/02/04/08/16
is initiated in the same manner as the write operation
with the one exception that the R/W bit is set to a one.
Three different READ operations are possible: Immedi-
ate Address READ, Selective READ and Sequential
READ.
Acknowledge Polling
The disabling of the inputs can be used to take advan-
tage of the typical write cycle time. Once the stop
condition is issued to indicate the end of the host’s write
operation, the CAT24WC01/02/04/08/16 initiates the
internal write cycle. ACK polling can be initiated imme-
diately. Thisinvolvesissuingthestartconditionfollowed
by the slave address for a write operation. If the
CAT24WC01/02/04/08/16 is still busy with the write
operation, no ACK will be returned. If the CAT24WC01/
02/04/08/16 has completed the write operation, an ACK
will be returned and the host can then proceed with
Immediate Address Read
The CAT24WC01/02/04/08/16’s address counter con-
tainstheaddressofthelastbyteaccessed, incremented
by one. In other words, if the last READ or WRITE
accesswas toaddressN, the READ immediatelyfollow-
ing would access data from address N+1. If N=E (where
E = 127 for 24WC01, 255 for 24WC02, 511 for 24WC04,
1023 for 24WC08, and 2047 for 24WC16), then the
counter will 'wrap around' to address 0 and continue to
thenext read or write operation.
Figure 6. Byte Write Timing
S
T
A
R
T
S
T
O
P
BUS ACTIVITY:
MASTER
SLAVE
ADDRESS
BYTE
ADDRESS
DATA
*
SDA LINE
S
P
A
C
K
A
C
K
A
C
K
5020 FHD F08
Figure 7. Page Write Timing
S
T
A
R
T
S
T
O
P
BUS ACTIVITY:
MASTER
SLAVE
ADDRESS
BYTE
ADDRESS (n)
DATA n
DATA n+1
DATA n+P
SDA LINE
S
P
*
A
C
K
A
C
K
A
C
K
A
C
K
A
C
K
NOTE: IN THIS EXAMPLE n = XXXX 0000(B); X = 1 or 0
P=7 for CAT24WC01 and P=15 for CAT24WC02/04/08/16
* = Don't care for CAT24WC01
24WCXX F09
Doc. No. 25051-00 3/98 S-1
7
CAT24WC01/02/04/08/16
clock out data. After the CAT24WC01/02/04/08/16 re-
ceives itsslave address information (withthe R/W bit set
to one), it issues an acknowledge, then transmits the 8-
bit byte requested. The master device does not send an
acknowledge but will generate a STOP condition.
Sequential Read
The Sequential READ operation can be initiated by
either the immediate Address READ or Selective READ
operations. After the 24WC01/02/04/08/16 sends initial
8-bit byte requested, the Master will respond with an
acknowledge which tells the device it requires more
data. The CAT24WC01/02/04/08/16 will continue to
output an 8-bit byte for each acknowledge sent by the
Master. The operation is terminated when the Master
fails to respond with an acknowledge, thus sending the
STOP condition.
Selective Read
Selective READ operations allow the Master device to
select at random any memory location for a READ
operation. The Master device first performs a ‘dummy’
write operation by sending the START condition, slave
address and byte address of the location it wishes to
read. After the CAT24WC01/02/04/08/16 acknowledge
thewordaddress,theMasterdeviceresendstheSTART
condition and the slave address, this time with the R/W
bit set to one. The CAT24WC01/02/04/08/16 then re-
sponds with its acknowledge and sends the 8-bit byte
requested. The master device does not send an ac-
knowledge but will generate a STOP condition.
The data being transmitted from the CAT24WC01/02/
04/08/16 is outputted sequentially with data from ad-
dress N followed by data from address N+1. The READ
operation address counter increments all of the
CAT24WC01/02/04/08/16 address bits so that the en-
tire memory array can be read during one operation. If
more than the E (where E = 127 for 24WC01, 255 for
24WC02, 511 for 24WC04, 1023 for 24WC08, and 2047
for 24WC16) bytes are read out, the counter will “wrap
around” and continue to clock out data bytes.
Figure 8. Immediate Address Read Timing
S
T
A
R
T
S
T
O
P
BUS ACTIVITY:
MASTER
SLAVE
ADDRESS
SDA LINE
S
P
A
C
K
N
O
DATA
A
C
K
SCL
SDA
8
9
8TH BIT
DATA OUT
NO ACK
STOP
5020 FHD F10
Doc. No. 25051-00 3/98 S-1
8
CAT24WC01/02/04/08/16
Figure 9. Selective Read Timing
S
T
A
R
T
S
T
A
R
T
S
T
O
P
BUS ACTIVITY:
MASTER
SLAVE
ADDRESS
BYTE
ADDRESS (n)
SLAVE
ADDRESS
SDA LINE
S
S
P
*
A
C
K
A
C
K
A
C
K
N
DATA n
O
A
C
K
* = Don't Care for 24WC01
24WCXX F11
Figure 10. Sequential Read Timing
S
T
O
P
BUS ACTIVITY:
MASTER
SLAVE
ADDRESS
DATA n
DATA n+1
DATA n+2
DATA n+x
SDA LINE
P
A
C
K
A
C
K
A
C
K
A
C
K
N
O
A
C
K
5020 FHD F12
ORDERING INFORMATION
Prefix
Device #
24WC02
Suffix
CAT
J
I
-1.8
TE13
Temperature Range
Product Number
24WC01: 1K
24WC02: 2K
24WC04: 4K
24WC08: 8K
24WC16: 16K
Tape & Reel
TE13: 2000/Reel
Optional
Company ID
Blank = Commercial (0˚ - 70˚C)
I = Industrial (-40˚ - 85˚C)
A = Automotive (-40˚ - 105˚C)*
Operating Voltage
Blank: 2.5V - 6.0V
1.8: 1.8V - 6.0V
Package
P: PDIP
J: SOIC (JEDEC)
U: TSSOP**
24WCXX F14
* -40˚ to +125˚C is available upon request
** Available for 24WC01 and 24WC02
Notes:
(1) The device used in the above example is a 24WC02JI-1.8TE13 (SOIC, Industrial Temperature, 1.8 Volt to 6 Volt Operating
Voltage, Tape & Reel)
Doc. No. 25051-00 3/98 S-1
9
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|
| CAT24WC01LA-1.8REV-F | ONSEMI | IC,SERIAL EEPROM,128X8,CMOS,DIP,8PIN,PLASTIC | 获取价格 |
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| CAT24WC01LA-1.8REV-F | CATALYST | EEPROM, 128X8, Serial, CMOS, PDIP8, 0.300 INCH, GREEN, PLASTIC, MS-001, DIP-8 | 获取价格 |
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| CAT24WC01LA-1.8TE13C | CATALYST | 1K/2K/4K/8K/16K-Bit Serial E2PROM | 获取价格 |
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| CAT24WC01LA-1.8TE13F | CATALYST | 1K/2K/4K/8K/16K-Bit Serial E2PROM | 获取价格 |
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| CAT24WC01LA-REV-C | CATALYST | EEPROM, 128X8, Serial, CMOS, PDIP8, 0.300 INCH, GREEN, PLASTIC, MS-001, DIP-8 | 获取价格 |
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