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TMP86FS64FG bảng dữ liệu(PDF) 138 Page - Toshiba Semiconductor

tên linh kiện TMP86FS64FG
Giải thích chi tiết về linh kiện  8 Bit Microcontroller
PDF  252 Pages
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nhà sản xuất  TOSHIBA [Toshiba Semiconductor]
Trang chủ  http://www.semicon.toshiba.co.jp/eng
Logo TOSHIBA - Toshiba Semiconductor

TMP86FS64FG bảng dữ liệu(HTML) 138 Page - Toshiba Semiconductor

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Page 126
12. 8-Bit TimerCounter 5 (TC5)
12.1 Configuration
TMP86FS64FG
12.3.3 Programmable Divider Output (PDO) Mode
The programmable divider output (PDO) mode is used to generated a pulse with a 50% duty cycle by count-
ing with the internal clock.
When a match between the up-counter and the TC5DR value is detected, the logic level output from the
PDO5 pin is switched to the opposite state and INTTC5 interrupt request is generated. The up-counter is
cleared at this time and then counting is continued. When a match between the up-counter and the TC5DR
value is detected, the logic level output from the PDO5 pin is switched to the opposite state again and INTTC5
interrupt request is generated. The up-counter is cleared at this time, and then counting and PDO are continued.
When the timer is stopped, the PDO5 pin is high. Therefore, if the timer is stopped when the PDO5 pin is
low, the duty pulse may be shorter than the programmed value.
Figure 12-2 PDO Mode Timing Chart
Example :Generating 1024 Hz pulse (fc = 16.0 Mhz)
LD
(TC5CR), 00000110B
: Sets the PDO mode. (TC5M
= 10, TC5CK = 001)
LD
(TC5DR), 3DH
: 1/1024
÷ 27/fc ÷ 2 (half cycle period) = 3DH
LD
(TC5CR), 00100110B
: Start TC5
Internal clock
Counter
Match detect
0
12
n
0
12
n 0
1
2
n 01
2
n 0
1
n
TC5DR
PDO5 pin
INTTC5 interrupt
request
Timer F/F



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