MC68HC908AB32 Datasheet, PDF (213/392 Pages) Motorola, Inc – HCMOS Microcontroller Unit

Timer Interface Module B (TIMB)
Address: $0042
Bit 7
6
5
4
3
2
1
Bit 0
Read: Bit 7
6
5
4
3
2
1
Bit 0
Write:
Reset: 0
0
0
0
0
0
0
0
= Unimplemented
Figure 12-6. TIMB Counter Register Low (TBCNTL)
12.10.3 TIMB Counter Modulo Registers
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.
Address: $0043
Bit 7
6
5
4
3
2
Read:
Bit 15
14
13
12
11
10
Write:
1
Bit 0
9
Bit 8
Reset: 1
1
1
1
1
1
1
1
Figure 12-7. TIMB Counter Modulo Register High (TBMODH)
Address: $0044
Bit 7
6
5
4
3
2
1
Bit 0
Read:
Bit 7
6
5
4
3
2
1
Bit 0
Write:
Reset: 1
1
1
1
1
1
1
1
Figure 12-8. TIMB Counter Modulo Register Low (TBMODL)
NOTE: Reset the TIMB counter before writing to the TIMB counter modulo
registers.
MC68HC908AB32 — Rev. 1.1
Freescale Semiconductor
Timer Interface Module B (TIMB)
Technical Data
213