MC68HC08AZ32A Datasheet, PDF (401/456 Pages) Motorola, Inc – HCMOS Microcontroller Unit

Freescale Semiconductor, Inc.
Timer Interface Module A (TIMA)
I/O Registers
22.9.3 TIMA Counter Modulo Registers
The read/write TIMA modulo registers contain the modulo value for the
TIMA counter. When the TIMA counter reaches the modulo value, the
overflow flag (TOF) becomes set and the TIMA counter resumes
counting from $0000 at the next timer clock. Writing to the high byte
(TAMODH) inhibits the TOF bit and overflow interrupts until the low byte
(TAMODL) is written. Reset sets the TIMA counter modulo registers.
Register Name and Address TAMODH — $0024
Bit 7
6
5
4
Read:
BIT 15
Write:
BIT 14
BIT 13
BIT 12
Reset: 1
1
1
1
3
BIT 11
1
2
BIT 10
1
1
BIT 9
1
Bit 0
BIT 8
1
Register Name and Address TAMODL — $0025
Bit 7
6
5
4
3
2
1
Bit 0
Read:
BIT 7 BIT 6 BIT 5 BIT 4 BIT 3 BIT 2 BIT 1 BIT 0
Write:
Reset: 1
1
1
1
1
1
1
1
Figure 22-6. TIMA Counter Modulo Registers (TAMODH and
TAMODL)
NOTE: Reset the TIMA counter before writing to the TIMA counter modulo
registers.
MC68HC08AZ32A — Rev 1.0
MOTOROLA
Timer Interface Module A (TIMA)
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Technical Data
401