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HD64F2145 Datasheet(PDF) 369 Page - Renesas Technology Corp

Part # HD64F2145
Description  Hitachi 16-Bit Single-Chip Microcomputer
PDF  829 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

HD64F2145 Datasheet(HTML) 369 Page - Renesas Technology Corp

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Rev. 2.0, 08/02, page 329 of 788
Bit
Bit Name Initial Value R/W
Description
2
1
0
CKS2
CKS1
CKS0
0
0
0
R/W
R/W
R/W
Clock Select 2 to 0
Selects the clock source to be input to. The overflow
frequency for ø = 10 MHz is enclosed in parentheses.
000: ø/2 (frequency: 51.2
µs)
001: ø/64 (frequency: 1.64 ms)
010: ø/128 (frequency: 3.28 ms)
011: ø/512 (frequency: 13.1 ms)
100: ø/2048 (frequency: 52.4 ms)
101: ø/8192 (frequency: 209.7 ms)
110: ø/32768 (frequency: 0.84 s)
111: ø/131072 (frequency: 3.36 s)
Notes: 1. Only 0 can be written, to clear the flag.
2. When OVF is polled with the interval timer interrupt disabled, OVF = 1 must be read at
least twice.



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