P89LV51RD2BBC NXP Semiconductors, P89LV51RD2BBC Datasheet - Page 53

• Manufacturer Part Number: P89LV51RD2BBC
• Description: MCU 8-Bit 89LV 80C51 CISC 64KB Flash 3.3V 44-Pin TQFP Tray
• Manufacturer: NXP Semiconductors

Specifications of P89LV51RD2BBC

• Package: 44TQFP
• Device Core: 80C51
• Family Name: 89LV
• Maximum Speed: 40 MHz
• Ram Size: 1 KB
• Program Memory Size: 64 KB
• Operating Supply Voltage: 3.3 V
• Data Bus Width: 8 Bit
• Program Memory Type: Flash
• Number Of Programmable I/os: 32
• Interface Type: SPI/UART
• Operating Temperature: 0 to 70 °C
• Number Of Timers: 3

NXP Semiconductors
P89LV51RB2_RC2_RD2_5
Product data sheet
Fig 24. PCA high-speed output mode
Fig 25. 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 only one
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 value in 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 — 15 December 2009
CCAPnH
CCAPnL
MATn
0
CAPPn
CL
0
-
match
TOGn
0
CAPNn
CCF4
0
PWMn
CL
CL
1
P89LV51RB2/RC2/RD2
(to CCFn)
MATn
CCF3
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
25). 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
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