Philips P89LPC907, P89LPC906, P89LPC908 user manual Table of Contents

Philips Semiconductors		User’s Manual - Preliminary -
Table of Contents		P89LPC906/907/908
1.	General Description	7
	Pin Configurations	7
	Product comparison	8
	Pin Descriptions - P89LPC906	12
	Pin Descriptions - P89LPC907	13
	Pin Descriptions - P89LPC908	14
	Special function registers	15
	Memory Organization	24
2.	Clocks	25
	Enhanced CPU	25
	Clock Definitions	25
	CPU Clock (OSCCLK)	25
	Low Speed Oscillator Option - P89LPC906	25
	Medium Speed Oscillator Option - P89LPC906	25
	High Speed Oscillator Option - P89LPC906	25
	Oscillator Option Selection- P89LPC906	26
	Clock Output - P89LPC906	26
	On-Chip RC oscillator Option	26
	If CCLK is 8MH or slower, the CLKLP SFR bit (AUXR1.7) can be set to ’1’ to re-
duce power consumption. On reset, CLKLP is ’0’ allowing highest performance access. This bit
can then be set in software if CCLK is running at 8MHz or slower		26
	Watchdog Oscillator Option	26
	External Clock Input Option - P89LPC906	27
	CPU Clock (CCLK) Wakeup Delay	27
	CPU Clock (CCLK) Modification: DIVM Register	27
	Low Power Select (P89LPC906)	28
	.................................................................................................................	29
3.	Interrupts	31
	Interrupt Priority Structure	31
	External Interrupt Inputs	32
	External Interrupt Pin Glitch Suppression	32
4.	I/O Ports	35
	Port Configurations	35
	Quasi-Bidirectional Output Configuration	35
	Open Drain Output Configuration	36
	Input-Only Configuration	37
	Push-Pull Output Configuration	37
	Port 0 Analog Functions	37
5. Timers 0 and 1		41
	Mode 0	42
	Mode 2	42
	Mode 3	43
	Mode 6 - P89LPC907	43
	Timer Overflow toggle output - P89LPC907	45

2003 Dec 8 2