TS80C51RA2 Atmel Corporation, TS80C51RA2 Datasheet - Page 26

• Manufacturer Part Number: TS80C51RA2
• Description: High Performance 8-bit Microcontroller
• Manufacturer: Atmel Corporation

1.
26
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ECOMn
CAPPn
CAPNn
MATn
TOGn
PWMn
ECCFn
CCAPMn Address
Symbol
n = 0 - 4
User software should not write 1s to reserved bits. These bits may be used in future 8051 family products to invoke new fea-
tures. In that case, the reset or inactive value of the new bit will be 0, and its active value will be 1. The value read from a
reserved bit is indeterminate.
TS8xC51Rx2
Function
Not implemented, reserved for future use.
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.
Toggle. When TOGn = 1, a match of the PCA counter with this module's compare/capture register causes the CEXn pin to
toggle.
Pulse Width Modulation Mode. PWMn = 1 enables the CEXn pin to be used as a pulse width modulated output.
Enable CCF interrupt. Enables compare/capture flag CCFn in the CCON register to generate an interrupt.
CCAPM2=0DCH
CCAPM3=0DDH
CCAPM0=0DAH
CCAPM1=0DBH
CCAPM4=0DEH
Reset value
•
Table 11 shows the CCAPMn settings for the various PCA functions.
.
Table 10. CCAPMn: PCA Modules Compare/Capture Control Registers
The last bit in the register ECOM (CCAPMn.6) when set enables the comparator
function.
X
-
(1)
ECOMn
0
CAPPn
0
CAPNn
0
MATn
0
TOGn
0
PWMm
0
4188A–8051–10/02
ECCFn
0