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AT89C51CC03U-RDTIM Datasheet(PDF) 145 Page - ATMEL Corporation

Part # AT89C51CC03U-RDTIM
Description  Enhanced 8-bit MCU with CAN Controller and Flash Memory
PDF  197 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT89C51CC03U-RDTIM Datasheet(HTML) 145 Page - ATMEL Corporation

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145
AT89C51CC03
4182K–CAN–05/06
Figure 69. PCA Capture Mode
16-bit Software Timer
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.
Figure 70. PCA 16-bit Software Timer and High Speed Output Mode
CEXn
n = 0, 4
PCA Counter
CH
(8bits)
CL
(8bits)
CCAPnH CCAPnL
CCFn
CCON
PCA
Interrupt
Request
7
CCAPMn Register (n = 0, 4)
0
CAPMn
CAPNn
ECOMn CAPPn
MATn
TOGn
PWMn ECCFn
CCAPnL
(8 bits)
CCAPnH
(8 bits)
70
CCAPMn Register
(n = 0, 4)
CH
(8 bits)
CL
(8 bits)
16-Bit Comparator
Match
Enable
CCFn
CCON reg
PCA
Interrupt
Request
CEXn
Compare/Capture Module
PCA Counter
“0”
“1”
Reset
Write to
CCAPnL
Write to CCAPnH
For software Timer mode, set ECOMn and MATn.
For high speed output mode, set ECOMn, MATn and TOGn.
Toggle
CAPMn
CAPNn
ECOMn
CAPPn
MATn
TOGn
PWMn ECCFn



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