P89C668 Philips Semiconductors, P89C668 Datasheet - Page 23

• Manufacturer Part Number: P89C668
• Description: 80C51 8-bit Flash microcontroller family 64KB ISP FLASH with 8KB RAM
• Manufacturer: Philips Semiconductors

Philips Semiconductors
2001 Jul 27
80C51 8-bit Flash microcontroller family
64KB ISP Flash with 8KB RAM
EXTERNAL INPUT
IDLE
(P1.2/ECI)
OVERFLOW
PCA TIMER/COUNTER
TIMER 0
OSC/6
OSC/2
MODULE 0
MODULE 1
MODULE 2
MODULE 3
MODULE 4
CMOD.0
ECF
CIDL
CF
00
01
10
11
Figure 17. PCA Interrupt System
WDTE
CCAPMn.0
Figure 16. PCA Timer/Counter
CF
CR
DECODE
CR
––
––
ECCFn
23
CCF4
––
––
CCF4
CCF3
––
16–BIT UP COUNTER
CH
CCF3
CCF2
CPS1
CCF2
CCF1
CPS0
IE.6
CL
EC
OVERFLOW
CCF1
CCF0
ECF
IE.7
EA
MODULES
TO PCA
CMOD
CCON
(C1H)
(C0H)
CCF0
TO
INTERRUPT
PRIORITY
DECODER
P89C668
INTERRUPT
CCON
Preliminary data
(C0H)
SU01097
SU01096