83C754 Datasheet, PDF (11/26 Pages) NXP Semiconductors – 80C51 8-bit microcontroller family 4K/256 OTP/ROM, DAC, comparator, UART, reference

Philips Semiconductors
80C51 8-bit microcontroller family
4K/256 OTP/ROM, DAC, comparator, UART, reference
Preliminary specification
83C754/87C754
OSC/12
OSC/4
TIMER 0
OVERFLOW
EXTERNAL INPUT
(P3.6/ECI)
IDLE
TO PCA
MODULES
CH
CL
16–BIT UP COUNTER
OVERFLOW
INTERRUPT
00
01
10 DECODE
11
CIDL WDTE
––
––
––
CPS1
CPS0
ECF
CMOD
(D9H)
CF
CR
––
CCF
––
––
––
––
CCON
(D8H)
Figure 6. PCA Timer/Counter
SU00673B
PCA TIMER/COUNTER
PCA MODULE
CMOD.0 ECF
CF
CR
––
CCF
––
––
––
––
CCON
(D8H)
IE.6
IE.7
EC
EA
TO
INTERRUPT
PRIORITY
DECODER
CCAPM ECCFn
Figure 7. PCA Interrupt System
SU00674A
1998 Apr 23
11