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TMP86FS23UG датащи(PDF) 96 Page - Toshiba Semiconductor

номер детали TMP86FS23UG
подробное описание детали  8 Bit Microcontroller
PDF  252 Pages
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производитель  TOSHIBA [Toshiba Semiconductor]
домашняя страница  http://www.semicon.toshiba.co.jp/eng
Logo TOSHIBA - Toshiba Semiconductor

TMP86FS23UG датащи(HTML) 96 Page - Toshiba Semiconductor

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Page 84
8. 18-Bit Timer/Counter (TC1)
8.3 Function
TMP86FS23UG
Figure 8-2 Timing chart for timer mode
8.3.2 Event Counter mode
It is a mode to count up at the falling edge of the ECIN pin input. When using this mode, set
TC1CR1<TC1CK> to the external clock and then set TC1CR2<SEG> to “0” (Both edges can not be used).
The countents of TREG1A are compared with the contents of up-counter. If a match is found, an INTTC1
interrupt is generated, and the counter is cleared. Counting up resumes for ECIN pin input edge each after the
counter is cleared.
The maximum applied frequency is fc/24 [Hz] in NORMAL 1/2 or IDLE 1/2 mode and fs/24[Hz] in SLOW
or SLEEP mode . Two or more machine cycles are required for both the “H” and “L” levels of the pulse width.
Figure 8-3 Event counter mode timing chart
1
0
2
3
4
n 0
1
n-1
2
3
4
5
6
n
TREG1A
Internal clock
Up counter
Command Start
Match detect
Counter clear
INTTC1 interrupt
1
0
2
2
n-1
n
0
1
n
TREG1A
ECIN pin input
Up counter
Start
Match Detect
Counter clear
INTTC1 interrupt



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