參數(shù)資料
型號: HD40A4054
廠商: Hitachi,Ltd.
英文描述: 4-Bit Single-Chip Microcomputer(4位單片微計算機)
中文描述: 4位單片機(4位單片微計算機)
文件頁數(shù): 58/101頁
文件大?。?/td> 610K
代理商: HD40A4054
HD404054 Series/HD404094 Series
58
Registers for Timer D Operation:
By using the following registers, timer D operation modes are selected
and the timer D count is read and written.
Timer mode register D1 (TMD1: $010)
Timer mode register D2 (TMD2: $015)
Timer write register D (TWDL: $011, TWDU: $012)
Timer read register D (TRDL: $011, TRDU: $012)
Port mode register C (PMRC: $025)
Detection edge select register 2 (ESR2: $027)
Timer mode register D1 (TMD1: $010): 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 41.
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 D1 (TMD1: $010) write instruction. Setting timer D’s initialization by
writing to timer write register D (TWDL: $011, TWDU: $012) must be done after a mode change
becomes valid.
When selecting the input capture timer operation, select the internal clock as the input clock source.
Bit
Initial value
Read/Write
Bit name
3
0
W
TMD13
2
0
W
TMD12
0
0
W
TMD10
1
0
W
TMD11
Timer mode register D1 (TMD1: $010)
0
1
0
1
0
1
0
1
0
1
0
1
0
1
input clock source
2048t
cyc
cyc
cyc
cyc
cyc
cyc
cyc
TMD12
TM
TMD11
Input clock period and
R4
0
/EVND (external event input)
TMD13
0
1
Free-running/reload
timer selection
Free-running timer
Reload timer
Figure 41 Timer Mode Register D1 (TMD1)
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HD40A4054H 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:HMCS400-series microcomputers designed to increase program productivity with large-capacity memory
HD40A4054S 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:HMCS400-series microcomputers designed to increase program productivity with large-capacity memory
HD40A4081FT 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller
HD40A4081H 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller
HD40A4081S 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller