HD404449 Datasheet, PDF (68/123 Pages) Hitachi Semiconductor – HD404449 SERIES

HD404449 Series
• Timer write register C (TWCL: $00E, TWCU: $00F): Write-only register consisting of a lower digit
(TWCL) and an upper digit (TWCU) as shown in figures 54 and 55. The operation of timer write
register C is basically the same as that of timer write register B (TWBL: $00A, TWBU: $00B).
• Timer read register C (TRCL: $00E, TRCU: $00F): Read-only register consisting of a lower digit
(TRCL) and an upper digit (TRCU) that holds the count of the timer C upper digit as shown in 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).
Timer mode register C1 (TMC1: $00D)
Bit
Initial value
Read/Write
Bit name
3
0
W
TMC13
2
0
W
TMC12
1
0
W
TMC11
0
0
W
TMC10
TMC13
0
1
Free-running/reload timer selection
Free-running timer
Reload timer
TMC12 TMC11 TMC10
0
0
0
1
1
0
1
1
0
0
1
1
0
1
Input clock period
2048t_cyc
1024t_cyc
512t_cyc
128t_cyc
32t_cyc
8t_cyc
4t_cyc
2t_cyc
Figure 52 Timer Mode Register C1 (TMC1)
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