參數(shù)資料
型號: HD404669
廠商: Hitachi,Ltd.
英文描述: Low-Voltage AS Microcomputers with On-Chip DTMF Generation Circuit(帶雙音多頻電路的低電壓微計算機)
中文描述: 低電壓如同在微機芯片的DTMF產(chǎn)生電路(帶雙音多頻電路的低電壓微計算機)
文件頁數(shù): 66/142頁
文件大小: 894K
代理商: HD404669
HD404669 Series
66
Bit
Initial value
Read/Write
Bit name
3
0
W
TWCL3
2
0
W
TWCL2
0
0
W
TWCL0
1
0
W
TWCL1
Timer write register C (lower digit) (TWCL: $00E)
Figure 45 Timer Write Register C Lower Digit (TWCL)
Bit
Initial value
Read/Write
Bit name
3
Undefined
W
TWCU3
2
Undefined
W
TWCU2
0
Undefined
W
TWCU0
1
Undefined
W
TWCU1
Timer write register C (upper digit) (TWCU: $00F)
Figure 46 Timer Write Register C Upper Digit (TWCU)
Timer read register C (TRCL: $00E, TRCU: $00F):
Timer read register C (TRCL: $00E, TRCU: $00F)
is a read-only register composed of a lower digit (TRCL: $00E), and an upper digit (TRCU: $00F) from
which the value of the upper digit of timer C is read directly.
First, read the upper digit (TRCU) of timer read register C. The current value of the timer C upper digit is
read and, at the same time, the value of the timer C lower digit is latched in the lower digit (TRCL) of timer
read register C. The timer C value is obtained when the upper digit (TRCU) of timer read register C is read
by reading the lower digit (TRCL) of timer read register C.
Bit
Initial value
Read/Write
Bit name
3
Undefined
R
TRCL3
2
Undefined
R
TRCL2
0
Undefined
R
TRCL0
1
Undefined
R
TRCL1
Timer read register C (lower digit) (TRCL: $00E)
Figure 47 Timer Read Register C Lower Digit (TRCL)
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