參數(shù)資料
型號(hào)： 87C576
廠商： NXP Semiconductors N.V.
英文描述： 80C51 8-bit microcontroller family(80C51八位微控制器系列)
中文描述： 80C51的8位單片機(jī)系列（80C51的八位微控制器系列）
文件頁(yè)數(shù)： 14/46頁(yè)
文件大?。?/td> 447K
代理商： 87C576
Philips Semiconductors
Product specification
83C576/87C576
80C51 8-bit microcontroller family
8K/256 OTP/ROM, 6 channel 10-bit A/D, 4 comparators,
failure detect circuitry, watchdog timer
1998 Jun 04
14
CCAPMn
Address
CCAPM0
CCAPM1
CCAPM2
CCAPM3
CCAPM4
0DAH
0DBH
0DCH
0DDH
0DEH
Reset Value = X000 0000B
–
ECOMn
CAPPn
CAPNn
MATn
TOGn
PWMn
ECCFn
Not Bit Addressable
Bit:
Symbol
Function
–
ECOMn
CAPPn
CAPNn
MATn
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.
TOGn
PWMn
ECCFn
NOTE:
*User software should not write 1s to reserved bits. These bits may be used in future 8051 family products to invoke new features. 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.
SU00037
7
6
5
4
3
2
1
0
Figure 7.
CCAPMn: PCA Modules Compare/Capture Registers
–
ECOMn
CAPPn
CAPNn
MATn
TOGn
PWMn
ECCFn
MODULE FUNCTION
X
0
0
0
0
0
0
0
No operation
X
X
1
0
0
0
0
X
16-bit capture by a positive-edge trigger on CEXn
X
X
0
1
0
0
0
X
16-bit capture by a negative trigger on CEXn
X
X
1
1
0
0
0
X
16-bit capture by a transition on CEXn
X
1
0
0
1
0
0
X
16-bit Software Timer
X
1
0
0
1
1
0
X
16-bit High Speed Output
X
1
0
0
0
0
1
0
8-bit PWM
X
1
0
0
1
X
0
X
Watchdog Timer
Figure 8.
PCA Module Modes (CCAPMn Register)
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