MC68HC908MR8 Datasheet, PDF (241/372 Pages) Motorola, Inc – Microcontrollers

Timer Interface B (TIMB)
I/O Registers
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 timer clock. Writing to the high byte
(TMODH) inhibits the TOF bit and overflow interrupts until the low byte
(TMODL) is written. Reset sets the TIMB counter modulo registers.
Register Name and Ad-
dress:
TBMODH — $0054
Bit 7
6
5
4
3
Read:
Bit 15
Write:
Bit 14
Bit 13
Bit 12
Bit 11
Reset: 1
1
1
1
1
2
Bit 10
1
1
Bit 9
1
Bit 0
Bit 8
1
Register Name and Ad-
dress:
TBMODL — $0055
Bit 7
6
5
4
3
2
1
Bit 0
Read:
Bit 7
Write:
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Reset: 1
1
1
1
1
1
1
1
Figure 12-6. TIMB Counter Modulo Registers (TMODH and TMODL)
NOTE: Reset the TIMB counter before writing to the TIMB counter modulo
registers.
MC68HC908MR8 — Rev 4.1
Freescale Semiconductor
Timer Interface B (TIMB)
Technical Data
241