參數(shù)資料
型號: HD404448
廠商: Hitachi,Ltd.
英文描述: 4-bit HMCS400-Series microcomputer(4位單片微計算機)
中文描述: 4位HMCS400系列微機(4位單片微計算機)
文件頁數(shù): 75/123頁
文件大?。?/td> 726K
代理商: HD404448
HD404449 Series
75
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
8t
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 59 Timer Mode Register D1 (TMD1)
Timer write register D (TWDL: $011, TWDU: $012): Write-only register consisting of a lower digit
(TWDL) and an upper digit (TWDU) as shown in figures 61 and 62. The operation of timer write
register D is basically the same as that of timer write register B (TWBL: $00A, TWBU: $00B).
Timer read register D (TRDL: $011, TRDU: $012): Read-only register consisting of a lower digit
(TRDL) and an upper digit (TRDU) as shown in figures 63 and 64. The operation of timer read register
D is basically the same as that of timer read register B (TRBL: $00A, TRBU: $00B).
When the input capture timer operation is selected and if the count of timer D is read after a trigger is
input, either the lower or upper digit can be read first.
Port mode register C (PMRC: $025): Write-only register that selects R4
0
/EVND pin function as shown
in figure 50. It is reset to $0 by MCU reset.
Detection edge select register 2 (ESR2: $027): Write-only register that selects the detection edge of
signals input to pin EVND as shown in figure 65. It is reset to $0 by MCU reset.
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