HD404328 Datasheet, PDF (51/96 Pages) Hitachi Semiconductor – 4 BIT SINGLE CHIP MICROCOMPUTER

Table 25
TMB
Bit 3
0
1
Timer Mode Register B
Auto Reload Function
Disabled
Enabled
HD404328 Series
TMB
Bit 2
0
1
Bit 1
0
1
0
1
Bit 0
0
1
0
1
0
1
0
1
Input Clock Period/ Input Clock Source
2048 t_cyc
512 t_cyc
128 t_cyc
32 t_cyc
8 t_cyc
4 t_cyc
2 t_cyc
ZCD/EVENT (external event input)
Timer Mode Register C (TMC: $00D): Four-bit write-only register that selects the auto-reload function
and prescaler division ratio as shown in table 26. It is initialized to $0 by MCU reset.
Writing to this register is valid from the second instruction execution cycle. Timer C initialization set by
writing to TMC must be done after a mode change becomes valid.
Table 26 Timer Mode Register C
TMC
Bit 3
0
1
Auto Reload Function
Disabled
Enabled
49