Datasheet

DS1087L
3.3V Spread-Spectrum EconOscillator
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Pin Description
PIN NAME FUNCTION
1 OUT Oscillator Output
2 SPRD Dither Enable. When the pin is high, the dither is enabled. When the pin is low, the dither is disabled.
3V
CC
Power Supply
4 GND Ground
5OE
Output Enable. When the pin is high, the output buffer is enabled. When the pin is low, the output is
disabled but the internal master oscillator is still on.
6 PDN
Power-Down. When the pin is high, the master oscillator is enabled. When the pin is low, the master
oscillator is disabled (power-down mode).
7 SDA 2-Wire Serial Data. This pin is for serial data transfer to and from the device.
8 SCL 2-Wire Serial Clock. This pin is used to clock data into and out of the device.
Figure 1. Functional Diagram
SDA
SCL
2-WIRE
INTERFACE
V
CC
EEPROM CONTROL
REGISTERS
PRESCALER
ADDR
SPRD
PDN
OUT
OE
TRIANGLE WAVE
GENERATOR
FACTORY-PROGRAMMED
OSCILLATOR
PRESCALER
BY 1, 2, 4...256
GND
MASTER
OSCILLATOR
OUTPUT
DITHER SIGNAL
DITHER
CONTROL
DS1087L