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H838532H bảng dữ liệu(PDF) 289 Page - Renesas Technology Corp

tên linh kiện H838532H
Giải thích chi tiết về linh kiện  16-Bit Single-Chip Microcomputer H8 Family / H8/300H Super Low Power Series
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nhà sản xuất  RENESAS [Renesas Technology Corp]
Trang chủ  http://www.renesas.com
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H838532H bảng dữ liệu(HTML) 289 Page - Renesas Technology Corp

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Section 9 Timers
Rev. 1.00 May 30, 2008 Page 269 of 484
REJ09B0436-0100
Bit 0
WRST
Description
0
Clearing condition:
Reset by
RES pin
When TCSRWE = 1, and 0 is written in both B0WI and WRST
1
Setting condition:
When TCW overflows and an internal reset signal is generated
(2) Timer Counter W (TCW)
Bit
Initial value
Read/Write
7
TCW7
0
R/W
6
TCW6
0
R/W
5
TCW5
0
R/W
4
TCW4
0
R/W
3
TCW3
0
R/W
0
TCW0
0
R/W
2
TCW2
0
R/W
1
TCW1
0
R/W
TCW is an 8-bit read/write up-counter, which is incremented by internal clock input. The input
clock is
φ/8192 or φw/32. The TCW value can always be written or read by the CPU.
When TCW overflows from H'FF to H'00, an internal reset signal is generated and WRST is set to
1 in TCSRW. Upon reset, TCW is initialized to H'00.
(3) Clock Stop Register 2 (CKSTPR2)
—
WDCKSTP PWCKSTP LDCKSTP
—
—
—
AECKSTP
7
6
543210
1
1111111
—
R/W
R/W
R/W
———
R/W
Bit
Initial value
Read/Write
CKSTPR2 is an 8-bit read/write register that performs module standby mode control for peripheral
modules. Only the bit relating to the watchdog timer is described here. For details of the other bits,
see the sections on the relevant modules.



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