mc68hc08qa24 Freescale Semiconductor, Inc, mc68hc08qa24 Datasheet - Page 305

• Manufacturer Part Number: mc68hc08qa24
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

20.9.3 TIMA Counter Modulo Registers
MC68HC08QA24
Freescale Semiconductor
NOTE:
Figure 20-6. TIMA Counter Modulo Registers (TMODH and TMODL)
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 clock. Writing to the high byte (TMODH)
inhibits the TOF bit and overflow interrupts until the low byte (TMODL) is
written. Reset sets the TIMA counter modulo registers.
Reset the TIMA counter before writing to the TIMA counter modulo
registers.
Reset:
Reset:
Read:
Read:
Write:
Write:
Register Name and Address: TAMODH — $0024
Register Name and Address: TAMODL — $0025
Bit 15
Bit 7
Bit 7
Bit 7
1
1
Timer Interface A (TIMA)
14
6
1
6
6
1
13
5
1
5
5
1
12
4
1
4
4
1
11
3
1
3
3
1
10
2
1
2
2
1
Timer Interface A (TIMA)
1
9
1
1
1
1
Technical Data
Bit 0
Bit 8
Bit 0
Bit 0
1
1
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