P89V51RB2FN NXP Semiconductors, P89V51RB2FN Datasheet - Page 49

• Manufacturer Part Number: P89V51RB2FN
• Description: IC, MCU 8BIT 80C51 16K FLASH, DIP40
• Manufacturer: NXP Semiconductors

Specifications of P89V51RB2FN

• Controller Family/series: (8051) 8052
• Core Size: 8bit
• No. Of I/o's: 32
• Program Memory Size: 16KB
• Ram Memory Size: 1KB
• Cpu Speed: 33MHz
• Oscillator Type: External Only
• No. Of Timers: 4
• No. Of Pwm: RoHS Compliant

NXP Semiconductors
P89V51RB2_RC2_RD2_5
Product data sheet
Table 37.
Table 38.
Bit addressable; Reset value: 00H
Table 39.
Table 40.
Not bit addressable; Reset value: 00H
Table 41.
CPS1
0
0
1
1
Bit
7
6
5
4
3
2
1
0
Bit
7
6
5
4
3
Bit
Symbol
Bit
Symbol
CMOD - PCA counter mode register (address D9H) count pulse select
CCON - PCA counter control register (address 0D8H) bit allocation
CCON - PCA counter control register (address 0D8H) bit description
CCAPMn - PCA modules compare/capture register (address CCAPM0 0DAH,
CCAPM1 0DBH, CCAPM2 0DCH, CCAPM3 0DDH, CCAPM4 0DEH) bit allocation
CCAPMn - PCA modules compare/capture register (address CCAPM0 0DAH,
CCAPM1 0DBH, CCAPM2 0DCH, CCAPM3 0DDH, CCAPM4 0DEH) bit description
Symbol
CF
CR
-
CCF4
CCF3
CCF2
CCF1
CCF0
Symbol
-
ECOMn
CAPPn
CAPNn
MATn
CF
7
7
-
CPS0
0
1
0
1
Rev. 05 — 12 November 2009
ECOMn
CR
6
6
Description
PCA counter overflow flag. Set by hardware when the counter rolls
over. CF flags an interrupt if bit ECF in CMOD is set. CF may be set by
either hardware or software but can only be cleared by software.
PCA counter run control bit. Set by software to turn the PCA counter
on. Must be cleared by software to turn the PCA counter off.
Reserved for future use. Should be set to ‘0’ by user programs.
PCA Module 4 Interrupt Flag. Set by hardware when a match or
capture occurs. Must be cleared by software.
PCA Module 3 Interrupt Flag. Set by hardware when a match or
capture occurs. Must be cleared by software.
PCA Module 2 Interrupt Flag. Set by hardware when a match or
capture occurs. Must be cleared by software.
PCA Module 1 Interrupt Flag. Set by hardware when a match or
capture occurs. Must be cleared by software.
PCA Module 0 Interrupt Flag. Set by hardware when a match or
capture occurs. Must be cleared by software.
Description
Reserved for future use. Should be set to ‘0’ by user programs.
Enable Comparator. ECOMn = 1 enables the comparator function.
Capture Positive, CAPPn = 1 enables positive edge capture.
Capture Negative, CAPNn = 1 enables negative edge capture.
Match. When MATn = 1 a match of the PCA counter with this module’s
compare/capture register causes the CCFn bit in CCON to be set,
flagging an interrupt.
CAPPn
5
5
-
Select PCA input
0 Internal clock, f
1 Internal clock, f
2 Timer 0 overflow
3 External clock at ECI/P1.2 pin (max rate = f
CAPNn
CCF4
P89V51RB2/RC2/RD2
4
4
8-bit microcontrollers with 80C51 core
osc
osc
CCF3
MATn
/ 6
/ 2
3
3
CCF2
TOGn
2
2
© NXP B.V. 2009. All rights reserved.
PWMn
CCF1
1
1
osc
/ 4)
ECCFn
CCF0
49 of 80
0
0