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TS80C51RA2-VCKB bảng dữ liệu(PDF) 32 Page - ATMEL Corporation

tên linh kiện TS80C51RA2-VCKB
Giải thích chi tiết về linh kiện  High Performance 8-bit Microcontrollers
PDF  74 Pages
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nhà sản xuất  ATMEL [ATMEL Corporation]
Trang chủ  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

TS80C51RA2-VCKB bảng dữ liệu(HTML) 32 Page - ATMEL Corporation

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Rev. C - 06 March, 2001
TS80C51RA2/RD2
TS83C51RB2/RC2/RD2
TS87C51RB2/RC2/RD2
6.5.3. High Speed Output Mode
In this mode the CEX output (on port 1) associated with the PCA module will toggle each time a match
occurs between the PCA counter and the module's capture registers. To activate this mode the TOG, MAT,
and ECOM bits in the module's CCAPMn SFR must be set (See Figure 11).
A prior write must be done to CCAPnL and CCAPnH before writing the ECOMn bit.
Figure 11. PCA High Speed Output Mode
Before enabling ECOM bit, CCAPnL and CCAPnH should be set with a non zero value, otherwise an unwanted
match could happen.
Once ECOM set, writing CCAPnL will clear ECOM so that an unwanted match doesn’t occur while modifying
the compare value. Writing to CCAPnH will set ECOM. For this reason, user software should write CCAPnL first,
and then CCAPnH. Of course, the ECOM bit can still be controlled by accessing to CCAPMn register.
CH
CL
CCAPnH
CCAPnL
ECOMn
CCAPMn, n = 0 to 4
0xDA to 0xDE
CAPNn MATn
TOGn PWMn ECCFn
CAPPn
16 bit comparator
Match
CF
CR
CCON
0xD8
CCF4
CCF3
CCF2
CCF1
CCF0
PCA IT
Enable
CEXn
PCA counter/timer
Write to
CCAPnH
Reset
Write to
CCAPnL
1
0



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