P87C51RA-IB

Manufacturer Part NumberP87C51RA-IB
ManufacturerNXP Semiconductors
P87C51RA-IB datasheets

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Philips Semiconductors
80C51 8-bit microcontroller family
8K–64K/256–1K OTP/ROM/ROMless, low voltage (2.7V–5.5V),
low power, high speed (33MHz)
(8XC51FX and 8XC51RX+ ONLY)
WRITE TO
RESET
CCAPnH
CCAPnH
WRITE TO
CCAPnL
0
1
ENABLE
16–BIT COMPARATOR
CH
PCA TIMER/COUNTER
––
––
ECOMn
2000 Aug 07
CF
CR
––
CCF4
CCF3
CCF2
CCAPnL
(TO CCFn)
MATCH
CL
ECOMn
CAPPn
CAPNn
MATn
TOGn
0
0
Figure 23. PCA High Speed Output Mode
CCAPnH
CCAPnL
CL < CCAPnL
ENABLE
8–BIT
COMPARATOR
CL >= CCAPnL
CL
OVERFLOW
PCA TIMER/COUNTER
CAPPn
CAPNn
MATn
TOGn
PWMn
0
0
0
0
Figure 24. PCA PWM Mode
30
Product specification
8XC54/58
8XC51FA/FB/FC/80C51FA
8XC51RA+/RB+/RC+/RD+/80C51RA+
CCON
CCF1
CCF0
(D8H)
PCA INTERRUPT
TOGGLE
CEXn
CCAPMn, n: 0..4
PWMn
ECCFn
(DAH – DEH)
1
0
SU00751
0
CEXn
1
CCAPMn, n: 0..4
ECCFn
(DAH – DEH)
0
SU00752