MC68HC08AZ60 Datasheet, PDF (277/452 Pages) Motorola, Inc – Advance Information

Freescale Semiconductor, Inc.
Modulo Timer (TIM)
I/O Registers
Address: $004D
Bit 7
6
5
4
3
2
1
Bit 0
Read: Bit 15
14
13
12
11
10
9
Bit 8
Write:
Reset: 0
0
0
0
0
0
0
0
= Unimplemented
Figure 4. TIM Counter Registers (TCNTH–TCNTL)
TIM Counter
Modulo Registers
The read/write TIM modulo registers contain the modulo value for the
TIM counter. When the TIM counter reaches the modulo value, the
overflow flag (TOF) becomes set, and the TIM counter resumes counting
from $0000 at the next clock. Writing to the high byte (TMODH) inhibits
the TOF bit and overflow interrupts until the low byte (TMODL) is written.
Reset sets the TIM counter modulo registers.
Address: $004E:$004F
Bit 7
6
5
4
3
2
1
Bit 0
Read:
Bit 15
14
13
12
11
10
Write:
9
Bit 8
Reset: 1
1
1
1
1
1
1
1
Address: $004E:$004F
Bit 7
6
5
4
3
2
1
Bit 0
Read:
Bit 7
6
5
4
3
2
1
Bit 0
Write:
Reset: 1
1
1
1
1
1
1
1
Figure 5. TIM Counter Modulo Registers (TMODH–TMODL)
NOTE: Reset the TIM counter before writing to the TIM counter modulo registers.
9-tim
MOTOROLA
MC68HC08AZ60 — Rev 1.0
Modulo Timer (TIM)
277
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