P89V51RD2FN NXP Semiconductors, P89V51RD2FN Datasheet - Page 53

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P89V51RD2FN

Manufacturer Part Number
P89V51RD2FN
Description
MCU 8-Bit 89V 80C51 CISC 64KB Flash 5V 40-Pin PDIP Tube
Manufacturer
NXP Semiconductors
Datasheet

Specifications of P89V51RD2FN

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

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NXP Semiconductors
P89V51RB2_RC2_RD2_5
Product data sheet
Fig 25. PCA high-speed output mode
Fig 26. PCA PWM mode
CCAPnL
write to
0
CCAPnH
write to
6.9.4 PWM mode
1
-
reset
ECOMn
All of the PCA modules can be used as PWM outputs
depends on the source for the PCA timer.
All of the modules will have the same frequency of output because they all share one and
only PCA timer. The duty cycle of each module is independently variable using the
module’s capture register CCAPnL. When the value of the PCA CL SFR is less than the
enable
1
enable
CAPPn
16-BIT COMPARATOR
CCAPnH
0
PCA timer/counter
CH
CF
-
CAPNn
0
ECOMn
CCAPnL
8-BIT COMPARATOR
CR
CL
PCA timer/counter
Rev. 05 — 12 November 2009
CCAPnH
CCAPnL
MATn
0
CAPPn
CL
0
-
match
TOGn
0
CAPNn
CCF4
0
PWMn
CL
CL
1
(to CCFn)
MATn
CCF3
P89V51RB2/RC2/RD2
1
CCAPnL
CCAPnL
ECCFn
8-bit microcontrollers with 80C51 core
1
TOGn
CCF2
0
1
0
(Figure
CCAPMn, n = 0 to 4
(DAH to DEH)
PWMn
CCF1
0
26). Output frequency
ECCFn
CCF0
002aaa541
CEXn
© NXP B.V. 2009. All rights reserved.
toggle
CCAPMn, n = 0 to 4
(DAH to DEH)
CCON
(D8H)
PCA
interrupt
002aaa540
CEXn
53 of 80

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