P89V51RB2FA NXP Semiconductors, P89V51RB2FA Datasheet - Page 48

• Manufacturer Part Number: P89V51RB2FA
• Description: MCU 8BIT 80C51 16K FLASH, PLCC44
• Manufacturer: NXP Semiconductors

Specifications of P89V51RB2FA

• Controller Family/series: (8051) 8052
• Core Size: 8bit
• No. Of I/o's: 32
• Program Memory Size: 16KB
• Ram Memory Size: 1KB
• Cpu Speed: 40MHz
• Oscillator Type: External Only
• No. Of Timers: 4
• No. Of Pwm: RoHS Compliant

NXP Semiconductors
P89V51RB2_RC2_RD2_5
Product data sheet
Fig 22. PCA interrupt system
PCA TIMER/COUNTER
MODULE0
MODULE1
MODULE2
MODULE3
MODULE4
CMOD.0
Table 35.
Not bit addressable; Reset value: 00H
Table 36.
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
Symbol
CIDL
WDTE
-
CPS1,
CPS0
ECF
CIDL
7
CCAPMn.0
Rev. 05 — 12 November 2009
WDTE
CF
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 ‘0’ by user programs.
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
P89V51RB2/RC2/RD2
4
-
CCF3
8-bit microcontrollers with 80C51 core
Table 37
CCF2
IE.6
3
-
EC
CCF1
below).
CPS1
2
IE.7
EA
CCF0
© NXP B.V. 2009. All rights reserved.
CPS0
CCON
(D8H)
to
interrupt
priority
decoder
1
002aaa533
ECF
48 of 80
0