Datasheet

Philips Semiconductors Product specification
8XC54/58
8XC51FA/FB/FC/80C51FA
8XC51RA+/RB+/RC+/RD+/80C51RA+
80C51 8-bit microcontroller family
8K–64K/256–1K OTP/ROM/ROMless, low voltage (2.7V–5.5V),
low power, high speed (33MHz)
2000 Aug 07
30
(8XC51FX and 8XC51RX+ ONLY)
CF CR CCF4 CCF3 CCF2 CCF1 CCF0––
CCON
(D8H)
–– ECOMn CAPPn CAPNn MATn TOGn PWMn ECCFn
CCAPMn, n: 0..4
(DAH – DEH)
CH CL
CCAPnH CCAPnL
PCA INTERRUPT
PCA TIMER/COUNTER
1000
16–BIT COMPARATOR
(TO CCFn)
WRITE TO
CCAPnH
RESET
WRITE TO
CCAPnL
01
ENABLE
CEXn
TOGGLE
MATCH
SU00751
Figure 23. PCA High Speed Output Mode
CL < CCAPnL
–– ECOMn CAPPn CAPNn MATn TOGn PWMn ECCFn
CCAPMn, n: 0..4
(DAH – DEH)
PCA TIMER/COUNTER
0000
CL
CCAPnL
CEXn
8–BIT
COMPARATOR
OVERFLOW
CCAPnH
ENABLE
0
1
CL >= CCAPnL
0
SU00752
Figure 24. PCA PWM Mode