參數(shù)資料
型號: P89V51RB2BBC
廠商: NXP SEMICONDUCTORS
元件分類: 微控制器/微處理器
英文描述: 8-bit 80C51 5 V low power 16/32/64 kB Flash microcontroller with 1 kB RAM
中文描述: 8-BIT, FLASH, 40 MHz, MICROCONTROLLER, PQFP44
封裝: 10 X 10 MM, 1 MM HEIGHT, PLASTIC, MS-026, TQFP-44
文件頁數(shù): 48/77頁
文件大小: 350K
代理商: P89V51RB2BBC
Philips Semiconductors
P89V51RB2/RC2/RD2
8-bit microcontrollers with 80C51 core
Product data
Rev. 03 — 02 December 2004
48 of 77
9397 750 14341
Koninklijke Philips Electronics N.V. 2004. All rights reserved.
Fig 22. PCA interrupt system.
002aaa533
PCA TIMER/COUNTER
MODULE0
CF
CR
-
CCF4
CCF3
CCF2
CCF1
CCF0
MODULE1
MODULE2
MODULE3
MODULE4
ECF
ECCFn
IEN0.6
EC
IEN0.7
EA
CCAPMn.0
CMOD.0
CCON
(D8h)
to
interrupt
priority
decoder
Table 37:
Not bit addressable; Reset value: 00H
Bit
7
Symbol
CIDL
CMOD - PCA counter mode register (address D9H) bit allocation
6
5
-
4
-
3
-
2
1
0
WDTE
CPS1
CPS0
ECF
Table 38:
Bit
7
CMOD - PCA counter mode register (address D9H) bit description
Symbol
Description
CIDL
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.
WDTE
Watchdog Timer Enable: WDTE = 0 disables Watchdog timer
function on module 4. WDTE = 1 enables it.
-
Reserved for future use. Should be set to
‘0’
by user programs.
CPS1,
CPS0
ECF
PCA Enable Counter Overflow Interrupt: ECF = 1 enables CF bit in
CCON to generate an interrupt. ECF = 0 disables that function.
6
5 to 3
2 to 1
PCA Count Pulse Select (see
Table 39
below).
0
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