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ICS91719 Datasheet(PDF) 2 Page - Integrated Circuit Systems

Part # ICS91719
Description  Low EMI, Spread Modulating, Clock Generator
PDF  10 Pages
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Manufacturer  ICST [Integrated Circuit Systems]
Direct Link  http://www.icst.com
Logo ICST - Integrated Circuit Systems

ICS91719 Datasheet(HTML) 2 Page - Integrated Circuit Systems

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ICS91719
0506D—08/16/04
Pin Descriptions
PIN #
PIN NAME
PIN TYPE
DESCRIPTION
1
GND
PWR
Ground pin for 3V outputs
2
X1 _CLKIN
IN
Crystal input or CLOCKIN input
3
X2
OUT
Crystal output
4
GNDA
PWR
Analog ground
5
VDDA
PWR
Analog power supply for 3V
6
VDD
PWR
Power supply for 3V
7
GND
PWR
Ground pin for 3V outputs
CLKOUT
OUT
Modulated clock output
FS_IN0
IN
Latched input for input frequency select
Spread enable pin
Latched input for input frequency select
10
SDATA
IN
Data pin for I2C circuitry 5V tolerant
11
SCLK
IN
Clock pin for I2C circuitry 5V tolerant
12
^PD#
IN
Power down
13
**REF_Stop
IN
Stop control for REF_CLOCK output STOP:1, RUNNING:0
14
REF_OUT/VDDREF_SEL_1.8V * *
IN/OUT
REF_CLOCK output
15
VDDREF_SEL_2.5V/3.3V# ^
PWR
REF_CLOCK power supply voltage select
16
VDDREF
PWR
Power supply for REF_CLOCK
^internal pull-up
**internal pull-down
8
9
^SPREAD_ENABLE
FS_IN1
IN



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