參數(shù)資料
型號(hào)： HD4074344S
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)）
文件頁數(shù)： 53/100頁
文件大小： 610K
代理商： HD4074344S
HD404344R Series/HD404394 Series
53
Timer mode register B2 (TMB2: $026): Two-bit write-only register that sets the input edge detection of
pin EVNB, as shown in figure 28. It is reset to $0 by an MCU reset.
Bit
Initial value
Read/Write
Bit name
3
—
—
Not used
2
—
—
Not used
0
0
W
TMB20
1
0
W
TMB21
Timer mode register B2 (TMB2: $026)
TMB21
0
1
TMB20
0
1
0
1
EVNB Edge Detection Selection
No detection
Falling-edge detection
Rising-edge detection
Rising- and falling-edge detection
Figure 28 Timer Mode Register B2 (TMB2)
Timer write register B (TWBL: $00A, TWBU: $00B): Write-only register consisting of the lower digit
(TWBL) and the upper digit (TWBU). The lower digit is reset to $0 by MCU reset, but the upper digit
value cannot be guaranteed. See figures 29 and 30.
Timer B is initialized by writing to timer write register B (TWBL: $00A, TWBU: $00B). In this case,
the lower digit (TWBL) must be written to first, but writing only to the lower digit does not change the
timer B value. Timer B is initialized to the value in timer write register B at the same time the upper
digit (TWBU) is written to. When timer write register B is written to again and if the lower digit value
needs no change, writing only to the upper digit initializes timer B.
Bit
Initial value
Read/Write
Bit name
3
0
W
TWBL3
2
0
W
TWBL2
0
0
W
TWBL0
1
0
W
TWBL1
Timer write register B (lower) (TWBL: $00A)
Figure 29 Timer Write Register B (lower) (TWBL)
Bit
Initial value
Read/Write
Bit name
3
Undefined
W
TWBU3
2
Undefined
W
TWBU2
0
Undefined
W
TWBU0
1
Undefined
W
TWBU1
Timer write register B (upper) (TWBU: $00B)
Figure 30 Timer Write Register B (upper) (TWBU)
相關(guān)PDF資料
PDF描述
HD4074394S 4-bit HMCS400-series microcomputer(4位單片微計(jì)算機(jī))
HD40C4341R 4-bit HMCS400-series microcomputer(4位單片微計(jì)算機(jī))
HD40C4342R 4-bit HMCS400-series microcomputer(4位單片微計(jì)算機(jī))
HD40C4344R 4-bit HMCS400-series microcomputer(4位單片微計(jì)算機(jī))
HD404342R 4-bit HMCS400-series microcomputer(4位單片微計(jì)算機(jī))
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HD4074394 制造商:未知廠家 制造商全稱:未知廠家 功能描述:HMCS43XXFamily User＇s Manual/Device
HD4074394FP 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:4-bit microcomputers
HD4074394FT 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller
HD4074394S 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller
HD4074408C 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller
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