參數(shù)資料
型號: HD40A4639R
廠商: Hitachi,Ltd.
英文描述: 4-Bit Single-Chip Microcomputer(4位單片微計算機(jī))
中文描述: 4位單片機(jī)(4位單片微計算機(jī))
文件頁數(shù): 69/133頁
文件大?。?/td> 803K
代理商: HD40A4639R
HD404639R Series
69
Timer mode register C1 (TMC1: $00D): Four-bit write-only register that selects the free-
running/reload timer function, input clock source, and the prescaler division ratio as shown in figure 52.
It is reset to $0 by MCU reset.
Writing to this register is valid from the second instruction execution cycle after the execution of the
previous timer mode register C1 write instruction. Setting timer C’s initialization by writing to timer
write register C (TWCL: $00E, TWCU: $00F) must be done after a mode change becomes valid.
Bit
Initial value
Read/Write
Bit name
3
0
W
TMC13
2
0
W
TMC12
0
0
W
TMC10
1
0
W
TMC11
Timer mode register C1 (TMC1: $00D)
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Input clock period
2048t
cyc
1024t
cyc
512t
cyc
128t
cyc
32t
cyc
8t
cyc
4t
cyc
2t
cyc
TMC12
TMC10
TMC11
TMC13
0
1
Free-running/reload timer selection
Free-running timer
Reload timer
Figure 52 Timer Mode Register C1 (TMC1)
Timer mode register C2 (TMC2: $014): Three-bit read/write register that selects the timer C output
mode as shown in figure 53. It is reset to $0 by MCU reset.
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