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Philips Semiconductors
General Description
Mnemonic
Pin no.
Type Name and function
6
V
5
SS
V
15
DD
2003 Dec 8
I/O
P3.1
Port 3 bit 1.
I
XTAL1 Input to the oscillator circuit and internal clock generator circuits (when
selected via the FLASH configuration). It can be a port pin if internal
RC oscillator or watchdog oscillator is used as the CPU clock source,
AND if XTAL1/XTAL2 are not used to generate the clock for the real
time clock/system timer.
I
Ground: 0V reference.
I
Power Supply: This is the power supply voltage for normal operation as well as
Idle and Power Down modes.
13
User's Manual - Preliminary -
P89LPC920/921/922
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