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): 64/123頁
文件大?。?/td> 726K
代理商: HD404448
HD404449 Series
64
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 (figures 48 and 49).
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 digit) (TRBL: $00A)
Figure 48 Timer Read Register B Lower Digit (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 digit) (TRBU: $00B)
Figure 49 Timer Read Register B Upper Digit (TRBU)
Port mode register C (PMRC: $025): Write-only register that selects R3
3
/
EVNB
pin function as shown
in figure 50. It is reset to $0 by MCU reset.
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參數(shù)描述
HD404448H 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:HD404449 SERIES
HD404448TF 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:HD404449 SERIES
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