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T89C5115 Datasheet(PDF) 75 Page - ATMEL Corporation

No. de Pieza. T89C5115
Descripción  Low Pin Countl 8-bit Microcontroller with A/D Converter and 16 KBytes Flash Memory
Descarga  113 Pages
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Fabricante  ATMEL [ATMEL Corporation]
Página de inicio  http://www.atmel.com
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T89C5115 Datasheet(HTML) 75 Page - ATMEL Corporation

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AT89C5115
4128F–8051–05/06
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 35. PCA 16-bit Software Timer and High Speed Output Mode
CCAPnL
(8 bits)
CCAPnH
(8 bits)
-
ECOMn0 0 MATn TOGn0 ECCFn
70
CCAPMn Register
(n = 0, 1)
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
CH
(8 bits)


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