XC908AS60ACFU Motorola Semiconductor Products, XC908AS60ACFU Datasheet - Page 335

• Manufacturer Part Number: XC908AS60ACFU
• Description: MC68HC908AZ60A, MC68HC908AS60A Hcmos Microcontroller Unit Technical Data
• Manufacturer: Motorola Semiconductor Products

20.9.3 TIMB Counter Modulo Registers
MC68HC908AZ60A — Rev 2.0
MOTOROLA
NOTE:
The read/write TIMB modulo registers contain the modulo value for the
TIMB counter. When the TIMB counter reaches the modulo value, the
overflow flag (TOF) becomes set and the TIMB counter resumes
counting from $0000 at the next timer clock. Writing to the high byte
(TBMODH) inhibits the TOF bit and overflow interrupts until the low byte
(TBMODL) is written. Reset sets the TIMB counter modulo registers.
Reset the TIMB counter before writing to the TIMB counter modulo
registers.
Reset:
Reset:
Read:
Read:
Write:
Write:
Register Name and Address TBMODH — $0043
Register Name and Address TBMODL — $0044
Figure 20-6. TIMB Counter Modulo Registers (TBMODH and
BIT 15
BIT 7
Bit 7
Bit 7
1
1
Timer Interface Module B (TIMB)
BIT 14
BIT 6
6
1
6
1
BIT 13
BIT 5
5
1
5
1
TBMODL)
BIT 12
BIT 4
4
1
4
1
BIT 11
BIT 3
3
1
3
1
Timer Interface Module B (TIMB)
BIT 10
BIT 2
2
1
2
1
BIT 9
BIT 1
1
1
1
1
Technical Data
I/O Registers
BIT 8
BIT 0
Bit 0
Bit 0
1
1
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