ICS9133X Datasheet, PDF (3/8 Pages) Integrated Circuit Systems – 32 kHz Motherboard Frequency Generator

ICS9133X
Block Diagram for ICS9133X
32.768 kHz
crystal
32.768 kHz
Reference
Clock
Output
Buffers
14.318 MHz
Clock
Generator
14.318 MHz
Recommended External Circuit
3
/
CPU Clock
Peripheral
Clocks
Frequency Select
Output
Buffers
Output
Buffers
2XCPU
CPU
OE
16 MHz
12 MHz
24 MHz
1
2
32.768
kHz
(Note 4)
3
VDDX
0.1µF
4
VDD
5
2.2µF
0.1µF
(Note 3)
6
7
8
9
10
20
19
18
17
16
15
0.1µF
14
13
12
0.1µF
11
Notes:
1. The external components shown should be placed as close to the device as possible.
2. Pins 5 and 15 should be connected together externally. One decoupling capacitor may suffice for both pins.
3. May be part of system decoupling.
4. Crystal load capacitance and feedback bias contained internally on the X1, X2 pins.
3