mc68hc708mp16 Freescale Semiconductor, Inc, mc68hc708mp16 Datasheet - Page 240

• Manufacturer Part Number: mc68hc708mp16
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Timer Interface Module B (TIMB)
12.9.1 TIMB Status and Control Register
Technical Data
240
Address:
The TIMB status and control register does the following:
TOF — TIMB Overflow Flag Bit
TOIE — TIMB Overflow Interrupt Enable Bit
Reset:
Read:
Write:
•
•
•
•
•
This read/write flag is set when the TIMB counter resets to $0000 after
reaching the modulo value programmed in the TIMB counter modulo
registers. Clear TOF by reading the TIMB status and control register
when TOF is set and then writing a logic 0 to TOF. If another TIMB
overflow occurs before the clearing sequence is complete, then
writing logic 0 to TOF has no effect. Therefore, a TOF interrupt
request cannot be lost due to inadvertent clearing of TOF. Reset
clears the TOF bit. Writing a logic 1 to TOF has no effect.
This read/write bit enables TIMB overflow interrupts when the TOF bit
becomes set. Reset clears the TOIE bit.
1 = TIMB counter has reached modulo value
0 = TIMB counter has not reached modulo value
1 = TIMB overflow interrupts enabled
0 = TIMB overflow interrupts disabled
Figure 12-4. TIMB Status and Control Register (TBSC)
Enables TIMB overflow interrupts
Flags TIMB overflows
Stops the TIMB counter
Resets the TIMB counter
Prescales the TIMB counter clock
$003F
Bit 7
TOF
0
0
Timer Interface Module B (TIMB)
= Unimplemented
TOIE
6
0
TSTOP
5
1
TRST
4
0
0
3
0
0
MC68HC708MP16
PS2
Freescale Semiconductor
2
0
PS1
1
0
—
Rev. 3.1
Bit 0
PS0
0