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HD404848FS Datasheet(PDF) 69 Page - Hitachi Semiconductor

Part # HD404848FS
Description  4-Bit Single-Chip Microcomputer
PDF  125 Pages
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Manufacturer  HITACHI [Hitachi Semiconductor]
Direct Link  http://www.renesas.com/eng
Logo HITACHI - Hitachi Semiconductor

HD404848FS Datasheet(HTML) 69 Page - Hitachi Semiconductor

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HD404849 Series
69
• Timer read register C (TRCL: $00E, TRCU: $00F): Read-only register consisting of a lower digit
(TRCL) and upper digit (TRCU) that holds the count of the timer C upper digit. See figures 56 and 57.
The operation of timer read register C is basically the same as that of timer read register B (TRBL:
$00A, TRBU: $00B).
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 56 Timer Read Register C Lower Digit (TRCL)
Bit
Initial value
Read/Write
Bit name
3
Undefined
R
TRCU3
2
Undefined
R
TRCU2
0
Undefined
R
TRCU0
1
Undefined
R
TRCU1
Timer read register C (upper digit) (TRCU: $00F)
Figure 57 Timer Read Register C Upper Digit (TRCU)
Timer D
Timer D Functions: Timer D has the following functions.
• Free-running/reload timer
• External event counter
• Timer output operation (toggle, 0, 1, and PWM outputs)
• Input capture timer
The block diagram for each operation mode of timer D is shown in figures 58-1 and 58-2.



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