DS1087L Datasheet, PDF (7/12 Pages) Dallas Semiconductor – 3.3V Spread-Spectrum EconOscillator

3.3V Spread-Spectrum EconOscillator
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.
3
V_CC
Power Supply
4
GND
Ground
5
OE
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.
V_CC
SDA
SCL
PDN
OE
SPRD
GND
2-WIRE
INTERFACE
EEPROM CONTROL
REGISTERS
ADDR
PRESCALER
DS1087L
DITHER
CONTROL
FACTORY-PROGRAMMED
OSCILLATOR
MASTER
OSCILLATOR
OUTPUT
PRESCALER
BY 1, 2, 4...256
OUT
TRIANGLE WAVE
GENERATOR _{DITHER SIGNAL}
Figure 1. Functional Diagram
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