ICS9134-06 [ICSI]
32 kHz Motherboard Frequency Generator; 32 kHz的主板频率发生器
| 型号： | ICS9134-06 |
| 厂家： | 
INTEGRATED CIRCUIT SOLUTION INC |
| 描述： | 32 kHz Motherboard Frequency Generator |
| 文件： | 总6页 (文件大小：207K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
ICS9134-06
ICS9134-07
Integrated
Circuit
Systems, Inc.
Advance Information
32 kHz Motherboard Frequency Generator
General Description
Features
The ICS9134-06 and ICS9134-07 are designed to generate
clocks for all 286, 386, 486, Pentium and RISC-based mother-
boards, including laptops and notebook computers. The only
external components required are a 32.768 kHz crystal and
decoupling capacitors. The device generates the 14.318 MHz
system clock, eliminating the need for a 14.318 MHz crystal.
High performance applications may require high speed clock
termination components. The chip includes three independent
clock generators plus the 32.768 kHz reference clock to pro-
duce all necessary frequencies, including real time
clock/DRAM refresh, master clock, CPU clock, keyboard
clock, floppy disk controller clock, serial communications
clock and bus clocks. Different frequencies from clocks #2 can
be selected using the frequency select pins, but clock #1 will
be at 14.318 MHz for all standard versions.
•
•
IDD <10 µA when 32 kHz is running on VDD32
Single 32.768 kHz crystal generates all PC motherboard
clocks
3 independent clock generators
Generates CPU clocks from 4.0 to 80 MHz
Up to 5 output clocks
Separate VDD for 32 kHz clock
Power-down options available
Operates from 3.3V or 5.0V supply
Operates up to 66 MHz at 3.3V
Supports OPTi 80C463/5 and Fir chipsets
16-pin, 300-mil, SOIC package
•
•
•
•
•
•
•
•
•
VDD32 Supply
Applications
The ICS9134-06 and ICS9134-07 have a separate power sup-
ply for the 32.768 kHz oscillator circuitry. This allows the
32 kHz clock to run from a battery or other source while the
main power to the chip is disconnected. The VDD32 supply is
guaranteed to operate down to +2.0V, with the clock consuming
less than 10µA at +3.3V with the main VDD at 0V.
Notebook/Palmtop Computers: The ICS9134-06 and
ICS9134-07 work with +3.3V and +5V and a single
32.768 kHz crystal, making it the ideal solution for generating
clocks in portables with minimum board space. The user can
save power by using this single part instead of oscillators or
other frequency generators. TheICS9134-06 and ICS9134-07
further reduce the current consumption by having the ability to
completelyshut downtheindividual clocks whennotinuse,while
still maintaining the separately powered 32.768 kHz clock.
The frequencies and power-down options in the ICS9134-06
and ICS9134-07 are mask programmable. Customer specific
masks can be made and prototypes delivered within 6-8 weeks
from receipt of order. Integrated Circuit Systems also offers
standard versions, such as that described in this data sheet.
Block Diagram
Fir is a trademark of Picopower Corporation.
9134-06 9134-07 RevC111695
ICS9134-06
ICS9134-07
Pin Configuration
Decoding Table for CPU Clock
CPUS2
CPUS1
CPUS0
CPUCLK (MHz)
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
Off+14M off
80.00
CPUS2
X2
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
CPUS1
CPUS0
CPUCLK
VDD
25.00
66.66
20.00
50.00
33.33
4.00
X1
VDD32
VDD
GND
24M
32K
GND
14.3M
ICS9134 Option
PD24+KDB
KBOUT
KEYBOARD CLOCK
KBOUT
-06
16 MHz
-07
12 MHz
16-Pin SOIC
Pin Descriptions
PIN
NUMBER
PIN
NAME
DESCRIPTION
TYPE
1
2
I
CPUS2
Select 2 for 2XCPU and CPU frequencies. See Table above.
Crystal connection. Connect to 32.768 kHz crystal. Includes internal
XTAL load capacitance.
O
X2
3
4
I
X1
Crystal connection. Connect to 32.768 kHz crystal. This pin includes
internal XTAL load capacitance and feedback bias for a 32.768 kHz crystal.
P
VDD32
Separate power supply connection for 32.768 kHz clock. Will operate down to
2.0V, independent of the rest of the circuit VDD.
5
6
P
P
VDD
Connect to +3.3V or +5V.
GND
Connect to ground.
7
O
O
O
I
24M
24 MHz floppy (or super I/O) clock output.
32.768 kHz square wave clock output.
Keyboard clock output, fixed 16 MHz (-06) or 12 MHz (-07).
8
32K
9
KBOUT
PD24+KBD
10
Power-down 24M+keyboard. Shuts off both clock outputs, pins 7 & 9 when
low.
11
12
13
14
15
16
O
P
P
O
I
14.3M
GND
14.318 MHz system clock output.
Connect to ground.
VDD
Connect to +3.3V or +5V.
CPUCLK
CPUS0
CPUS1
CPUCLK output. See Table above.
Select 0 for 2XCPU and CPU frequencies. See Table above.
Select 1 for 2XCPU and CPU frequencies. See Table above.
I
2
ICS9134-06
ICS9134-07
Absolute Maximum Ratings
VDD referenced to GND . . . . . . . . . . . . . . . . . . . . . . 7V
Operating temperature under bias. . . . . . . . . . . . . . . . 0°C to 70°C
Storage temperature . . . . . . . . . . . . . . . . . . . . . . . . . . -40°C to +150°C
Voltage on I/O pins referenced to GND. . . . . . . . . . . GND -0.5V to VDD +0.5V
Power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 Watts
Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating
only and functional operation of the device at these or any other conditions above those indicated in the operational sections of
the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect product
reliability.
Electrical Characteristics
VDD = +3.0 to 3.7V, TA=0°C to 70°C unless otherwise stated
DC Characteristics
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNITS
Input Low Voltage
Input High Voltage
Input Low Current
Input High Current
Output Low Voltage1
Output High Voltage1
Output Low Current1
Output High Current1
Supply Current
VIL
VIH
IIL
-
-
-
-7
-
0.2VDD
V
V
µA
µA
V
0.7VDD
-15
-
-
2
0.1
-
-
-8
17
24
12
-
VIN=0V
VIN=VDD
IOL=6mA
IOH=-4mA
VOL=0.2VDD
VOH=0.7VDD
No load @ 33 MHz
No load @ 66.6 MHz
No load, VDD32=3.7V
VDD=0 to 3.7V, 32 kHz
output operating
IIH
-2
-
VOL
VOH
IOL
IOH
IDD
IDD
IDD32
VDD32
-
0.9VDD
24
-13
9
12
4.6
-
0.85VDD
V
15
-
-
-
-
mA
mA
mA
mA
µA
V
Supply Current
V
V
DD32 Supply Current
DD32 Supply Voltage
2.0
Pull-up Resistor Value1
Rpu
370
530
650
k ohm
AC Characteristics
Rise Time1
Fall Time1
Rise Time1
Fall Time1
tr
tf
tr
tf
dt
tjis
tjab
fi
tpu
tft
15pF load, 0.8 to 2.0V
15pF load, 2.0 to 0.8V
15pF load, 20% to 80%
15pF load, 80% to 20%
15pF load
-
-
2
2
40
-
-
25
-
1.5
1.5
2.5
2.5
50
2
2
3.5
3.5
55
2
5.5
40
8
ns
ns
ns
ns
%
%
%
kHz
ms
ms
Duty Cycle1
Jitter, One Sigma1
Jitter, Absolute1
Input Frequency1
Power-up Time1
Transition Time1
As compared with
clock period.
1
2
32.768
4
Off to 33.3 MHz
4 to 66.6 MHz
-
-
4.8
Note:
1. Parameter guaranteed by design and characterization. Not 100% tested in production.
3
ICS9134-06
ICS9134-07
Electrical Characteristics
VDD = +5V±10%, TA=0°C to 70°C unless otherwise stated
DC Characteristics
TEST CONDITIONS
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
Input Low Voltage
Input High Voltage
Input Low Current
Input High Current
Output Low Voltage1
Output High Voltage1
Output Low Current1
Output High Current1
Supply Current
VIL
VIH
IIL
-
2
-22
-2
-
2.4
25
-
-
-
-10
-
0.15
3.7
45
-58
15
22
7.5
-
0.8
-
-
2
0.4
-
V
V
µA
µA
V
VIN=0V
VIN=VDD
IOL=10mA
IOH=-30mA
VOL=0.8V
VOH=2.0V
No load @ 33 MHz
No load @ 80 MHz
No load, VDD32=5.5V
VDD=0 to 5.5V, 32 kHz
output operating
IIH
VOL
VOH
IOL
IOH
IDD
IDD
IDD32
VDD32
V
-
mA
mA
mA
mA
µA
V
-35
28
35
20
-
Supply Current
-
-
2.0
V
V
DD32 Supply Current
DD32 Supply Voltage
Pull-up Resistor Value1
Rpu
380
550
680
k ohm
AC Characteristics
Rise Time1
Fall Time1
Rise Time1
Fall Time1
tr
tf
tr
tf
dt
tjis
tjab
fi
tpu
tft
15pF load, 0.8 to 2.0V
15pF load, 2.0 to 0.8V
15pF load, 20% to 80%
15pF load, 80% to 20%
15pF load
-
-
-
-
48
-
-
25
-
1
1
2
2
52
1
2
1.5
1.5
3
3
58
2
ns
ns
ns
ns
%
%
%
kHz
ms
ms
Duty Cycle1
Jitter, One Sigma1
Jitter, Absolute1
Input Frequency1
Power-up Time1
Transition Time1
As compared with
clock period.
5
32.768
40
14
5
Off to 80 MHz
4 to 80 MHz
7
-
-
Note:
1. Parameter guaranteed by design and characterization. Not 100% tested in production.
4
ICS9134-06
ICS9134-07
Recommended External Circuit
32.768 kHz
crystal
Notes:
1) The external components shown should be
placed as close to the device as possible.
VDD
0.1µF
0.1µF
VDD
0.1µF
2.2µF
2) Pins 5 and 13 should be connected together
externally. One decoupling capacitor may
suffice for both pins.
(Note 3)
3) May be part of system decoupling.
Typical 32 kHz Supply Current
5
ICS9134-06
ICS9134-07
LEAD COUNT
DIMENSION L
16L
0.404
SOIC Package (wide body)
Ordering Information
ICS9134-06M or ICS9134-07M
Example:
ICS XXXX-PPP M
Package Type
M=SOIC
Pattern Number (2 or 3 digit number for parts with ROM code patterns)
Device Type (consists of 3 or 4 digit numbers)
Prefix
ICS, AV=Standard Device
ADVANCE INFORMATION documents contain information on new products in the sampling
or preproduction phase of development. Characteristic data and other specifications are
subject to change without notice.
6
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