參數(shù)資料
型號: W78ERD2A40DN
廠商: WINBOND ELECTRONICS CORP
元件分類: 微控制器/微處理器
英文描述: 8-BIT MICROCONTROLLER
中文描述: 8-BIT, FLASH, 40 MHz, MICROCONTROLLER, PDIP40
封裝: DIP-40
文件頁數(shù): 46/72頁
文件大小: 606K
代理商: W78ERD2A40DN
W78ERD2
- 46 -
11.1 PCA Capture Mode
To use one of the PCA modules in the capture mode either one or both of the CCAPM bits CAPN and
CAPP for that module must be set. The external CEX input for the module (on port1) is sampled for a
transition. When a valid transition occurs the PCA hardware loads the value of the PCA counter
registers (CH and CL) into the module’s capture registers (CCAPnH and CCAPnL). If the
CCFn(CCON) bit for the module and the ECCFn(CCAPMn) bit are set then an interrupt will be
generated.
CF
CCF0
CCF1
CCF2
CCF3
CCF4
-
CR
CCON(D8H)
CEXn
CH
CL
CCAPnH
CCAPnL
-
ECCFn
PWMn
TOGn
MATn
CAPNn
CAPPn
ECOMn
CCAPMn, n=0~4
(DAH~DEH)
PCA Timer/Counter
PCA INTERRUPT
0
0
0
0
Capture
To CCFn
PCA Capture Mode
11.2 16-bit Software Timer Comparator 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) and the ECCFn(CCAPMn) bits for the
module are both set.
CF
CCF0
CCF1
CCF2
CCF3
CCF4
-
CR
CCON(D8H)
-
ECCFn
PWMn
TOGn
MATn
CAPNn
CAPPn
ECOMn
CCAPMn, n=0~4
(DAH~DEH)
0
0
0
Write To
CCAPnL
Write To
CCAPnH
CCAPnH
CCAPnL
CH
CL
PCA Timer/Counter
16-bit Comparator
Enable
PCA INTERRUPT
To CCFn
Match
0
0
1
PCA 16-bit Timer Comparator Mode
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