mc68hc08qa24 Freescale Semiconductor, Inc, mc68hc08qa24 Datasheet - Page 331

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

21.9.3 TIMB Counter Modulo Registers
MC68HC08QA24
Freescale Semiconductor
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 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 — $0030
Register Name and Address: TBMODL — $0031
Bit 15
Bit 7
Bit 7
Bit 7
1
1
Figure 21-6. TIMB Counter Modulo Registers
Timer Interface B (TIMB)
14
6
1
6
6
1
(TBMODH and TBMODL)
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 B (TIMB)
1
9
1
1
1
1
Technical Data
Bit 0
Bit 8
Bit 0
Bit 0
1
1
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