Philips P89LPC907 用户手册
Philips Semiconductors
User’s Manual - Preliminary -
P89LPC906/907/908
CLOCKS
29
Figure 2-4: Block Diagram of Oscillator Control- P89LPC907,P89LPC908
R T C
C P U
W atchdog
O scillator
R C O scillator
/2
D IV M
W D T
(7.3728M H z)
(400K H z)
C C LK
U AR T
Tim er 0 & 1
PC LK
C P U
C lock
B aud rate
G enerator
R T C S 1:0
O S C
C LK
FO S C 2:0