P89CV51RC2FA NXP Semiconductors, P89CV51RC2FA Datasheet - Page 47

• Manufacturer Part Number: P89CV51RC2FA
• Description: MCU 8-Bit 89C 80C51 CISC 32KB Flash 5V 44-Pin PLCC Tube
• Manufacturer: NXP Semiconductors

Specifications of P89CV51RC2FA

• Package: 44PLCC
• Device Core: 80C51
• Family Name: 89C
• Maximum Speed: 40 MHz
• Operating Supply Voltage: 5 V
• Data Bus Width: 8 Bit
• Number Of Programmable I/os: 32
• Interface Type: SPI/UART
• Number Of Timers: 3
• Ram Size: 1 KB
• Program Memory Size: 32 KB
• Program Memory Type: Flash
• Operating Temperature: -40 to 85 °C

NXP Semiconductors
P89CV51RB2_RC2_RD2_3
Product data sheet
Table 34.
Table 35.
Bit addressable; reset value: 00H.
Table 36.
Table 37.
Not bit addressable; reset value: 00H.
Table 38.
CPS1
0
1
1
Bit
Symbol
Bit
7
6
5
4
3
2
1
0
Bit
Symbol
Bit
7
6
5
4
3
CMOD - PCA counter mode register (address D9H) count pulse select
CCON - PCA counter control register (address D8H) bit allocation
CCON - PCA counter control register (address D8H) bit description
CCAPMn - PCA modules compare/capture register (address CCAPM0 DAH,
CCAPM1 DBH, CCAPM2 DCH, CCAPM3 DDH, CCAPM4 DEH) bit allocation
CCAPMn - PCA modules compare/capture register (address CCAPM0 DAH,
CCAPM1 DBH, CCAPM2 DCH, CCAPM3 DDH, CCAPM4 DEH) bit description
Symbol
CF
CR
-
CCF4
CCF3
CCF2
CCF1
CCF0
Symbol
-
ECOMn
CAPPn
CAPNn
MATn
CF
7
7
-
CPS0
1
0
1
ECOMn
Rev. 03 — 25 August 2009
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. 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
1 internal clock, f
2 Timer 0 overflow
3 external clock at pin P1[2]/ECI (maximum rate = f
P89CV51RB2/RC2/RD2
CAPNn
CCF4
4
4
osc
CCF3
MATn
/ 6
3
3
80C51 with 1 kB RAM, SPI
CCF2
TOGn
2
2
© NXP B.V. 2009. All rights reserved.
PWMn
CCF1
1
1
…continued
ECCFn
osc
CCF0
47 of 76
0
0
/ 4)