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T89C51RD2-3CWC-L Datasheet(PDF) 28 Page - ATMEL Corporation

Part # T89C51RD2-3CWC-L
Description  0 to 40MHz Flash Programmable 8-bit Microcontroller
PDF  86 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

T89C51RD2-3CWC-L Datasheet(HTML) 28 Page - ATMEL Corporation

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Rev. F - 15 February, 2001
28
T89C51RD2
Figure 9. PCA Capture Mode
6.5.2. 16-bit Software Timer / Compare Mode
The PCA modules can be used as software timers by setting both the ECOM and MAT bits in the modules
CCAPMn register. The PCA timer will be compared to the module's capture registers and when a match occurs
an interrupt will occur if the CCFn (CCON SFR) and the ECCFn (CCAPMn SFR) bits for the module are both
set (See Figure 10).
CF
CR
CCON
0xD8
CH
CL
CCAPnH
CCAPnL
CCF4
CCF3
CCF2
CCF1
CCF0
PCA IT
PCA Counter/Timer
ECOMn
CCAPMn, n= 0 to 4
0xDA to 0xDE
CAPNn MATn
TOGn PWMn ECCFn
CAPPn
Cex.n
Capture



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