參數(shù)資料
型號(hào): HD4074394S
廠商: Hitachi,Ltd.
英文描述: 4-bit HMCS400-series microcomputer(4位單片微計(jì)算機(jī))
中文描述: 4位HMCS400系列微電腦(4位單片微計(jì)算機(jī))
文件頁(yè)數(shù): 54/100頁(yè)
文件大?。?/td> 610K
代理商: HD4074394S
HD404344R Series/HD404394 Series
54
Timer read register B (TRBL: $00A, TRBU: $00B): Read-only register consisting of the lower digit
(TRBL) and the upper digit (TRBU) that holds the count of the timer B upper digit. See figures 31 and
32.
The upper digit (TRBU) must be read first. At this time, the count of the timer B upper digit is
obtained, and the count of the timer B lower digit is latched to the lower digit (TRBL). After this, by
reading TRBL, the count of timer B when TRBU is read can be obtained.
Bit
Initial value
Read/Write
Bit name
3
Undefined
R
TRBL3
2
Undefined
R
TRBL2
0
Undefined
R
TRBL0
1
Undefined
R
TRBL1
Timer read register B (lower) (TRBL: $00A)
Figure 31 Timer Read Register B (lower) (TRBL)
Bit
Initial value
Read/Write
Bit name
3
Undefined
R
TRBU3
2
Undefined
R
TRBU2
0
Undefined
R
TRBU0
1
Undefined
R
TRBU1
Timer read register B (upper) (TRBU: $00B)
Figure 32 Timer Read Register B (upper) (TRBU)
Port mode register B (PMRB: $024): Write-only register that selects the D
0
/
INT
0
/EVNB pin as shown
in figure 20. It is reset to $0 by an MCU reset.
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HD40C4341R 4-bit HMCS400-series microcomputer(4位單片微計(jì)算機(jī))
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