P89LV51RD2 Philips Semiconductors, P89LV51RD2 Datasheet - Page 48

• Manufacturer Part Number: P89LV51RD2
• Description: 8-bit 80C51 3 V low power 64 kB Flash microcontroller with 1 kB RAM
• Manufacturer: Philips Semiconductors

Philips Semiconductors
9397 750 14101
Product data
Fig 22. PCA interrupt system.
PCA TIMER/COUNTER
MODULE0
MODULE1
MODULE2
MODULE3
MODULE4
CMOD.0
Table 37:
Not bit addressable; Reset value: 00H
Table 38:
Bit
7
6
5 to 3
2 to 1
0
Bit
Symbol
ECF
CMOD - PCA counter mode register (address D9H) bit allocation
CMOD - PCA counter mode register (address D9H) bit description
CIDL
Symbol
CIDL
WDTE
-
CPS1,
CPS0
ECF
7
CCAPMn.0
Rev. 03 — 11 October 2004
CF
WDTE
6
Description
Counter Idle Control: CIDL = 0 programs the PCA Counter to
continue functioning during Idle Mode. CIDL = 1 programs it to be
gated off during idle.
Watchdog Timer Enable: WDTE = 0 disables Watchdog timer
function on module 4. WDTE = 1 enables it.
Reserved for future use. Should be set to
PCA Count Pulse Select (see
PCA Enable Counter Overflow Interrupt: ECF = 1 enables CF bit in
CCON to generate an interrupt. ECF = 0 disables that function.
CR
ECCFn
-
5
-
CCF4
CCF3
4
-
8-bit microcontrollers with 80C51 core
CCF2
IEN0.6
Table 39
3
-
EC
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
CCF1
P89LV51RD2
CPS1
below).
CCF0
2
‘0’
IEN0.7
EA
by user programs.
CCON
(D8h)
CPS0
1
to
interrupt
priority
decoder
002aaa533
48 of 77
ECF
0