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| SP5524 Datasheet, PDF (8/10 Pages) Zarlink Semiconductor Inc – Bidirectional I2C Bus Controlled Synthesiser | |||
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VREF
550
550
13
RF INPUTS
14
RF input
VCC
NOT
ON P6
PORT
Ports P0 - P3, P6 and P7
SP5524
VCC
1 CHARGE
PUMP
170
16 DRIVE
OUTPUT
Loop amplifier
VCC
3k
SCL/SDA
*
ACK
* ON SDA ONLY
SCL and SDA inputs
2
CRYSTAL Q1
3
CRYSTAL Q2
Reference oscillator
Fig. 6 Input/output interface circuits
7
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