MC68HC908AS60ACFN FREESCALE [Freescale Semiconductor, Inc], MC68HC908AS60ACFN Datasheet - Page 319

• Manufacturer Part Number: MC68HC908AS60ACFN
• Description: M68HC08 Microcontrollers
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

25.8.3 TIMA Counter Modulo Registers
Freescale Semiconductor
Register Name and Address
Register Name and Address
Register Name and Address
Register Name and Address
Figure 25-6. TIMA Counter Modulo Registers (TAMODH and TAMODL)
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.
Reset the TIMA counter before writing to the TIMA counter modulo registers.
Reset:
Reset:
Reset:
Reset:
Read:
Read:
Read:
Read:
Write:
Write:
Write:
Write:
MC68HC908AZ60A • MC68HC908AS60A • MC68HC908AS60E Data Sheet, Rev. 6
Figure 25-5. TIMA Counter Registers (TACNTH and TACNTL)
BIT 15
BIT 15
BIT 7
BIT 7
Bit 7
Bit 7
Bit 7
Bit 7
0
0
1
1
= Unimplemented
BIT 14
BIT 14
BIT 6
BIT 6
6
0
6
0
6
1
6
1
TACNTH — $0022
TACNTL — $0023
TAMODH — $0024
TAMODL — $0025
BIT 13
BIT 13
BIT 5
BIT 5
5
0
5
0
5
1
5
1
NOTE
BIT 12
BIT 12
BIT 4
BIT 4
4
0
4
0
4
1
4
1
BIT 11
BIT 11
BIT 3
BIT 3
3
0
3
0
3
1
3
1
BIT 10
BIT 10
BIT 2
BIT 2
2
0
2
0
2
1
2
1
BIT 9
BIT 1
BIT 9
BIT 1
1
0
1
0
1
1
1
1
BIT 0
BIT 8
BIT 8
BIT 0
Bit 0
Bit 0
Bit 0
Bit 0
0
0
1
1
I/O Registers
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