R5S72011 RENESAS [Renesas Technology Corp], R5S72011 Datasheet - Page 653
R5S72011
Manufacturer Part Number
R5S72011
Description
32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7200 Series
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.R5S72011.pdf
(1196 pages)
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Bit
5
4, 3
2 to 0
Bit Name
TME
CKS[2:0]
Initial
Value
0
All 1
000
R/W
R/W
R
R/W
Description
Timer Enable
Starts and stops timer operation. Clear this bit to 0
when using the WDT in software standby mode or
when changing the clock frequency.
0: Timer disabled
1: Timer enabled
Reserved
These bits are always read as 1. The write value
should always be 1.
Clock Select
These bits select the clock to be used for the WTCNT
count from the eight types obtainable by dividing the
peripheral clock (Pφ). The overflow period that is
shown inside the parenthesis in the table is the value
when the peripheral clock (Pφ) is 25 MHz.
Bits 2 to 0
000:
001:
010:
011:
100:
101:
110:
111:
Note: If bits CKS[2:0] are modified when the WDT is
Count-up stops and WTCNT value is retained
running, the up-count may not be performed
correctly. Ensure that these bits are modified
only when the WDT is not running.
Rev. 2.00 Sep. 07, 2007 Page 625 of 1164
Clock Ratio
1 × Pφ
1/64 × Pφ
1/128 × Pφ
1/256 × Pφ
1/512 × Pφ
1/1024 × Pφ
1/4096 × Pφ
1/16384 × Pφ
Section 14 Watchdog Timer (WDT)
Overflow Cycle
10.2 µs
655.4 µs
1.3 ms
2.6 ms
5.2 ms
10.5 ms
41.9 ms
167.8 ms
REJ09B0321-0200
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