mc68hc08az60 Freescale Semiconductor, Inc, mc68hc08az60 Datasheet - Page 274

• Manufacturer Part Number: mc68hc08az60
• Description: M68hc08 Family Of 8-bit Microcontroller Units Mcus
• Manufacturer: Freescale Semiconductor, Inc

Modulo Timer (T IM)
I/O Registers
TIM Status and
Control Register
MC68HC08AZ60 — Rev 1.0
274
Address:
The following I/O registers control and monitor operation of the TIM:
The TIM status and control register:
TOF — TIM Overflow Flag Bit
Reset:
Read:
Write:
Freescale Semiconductor, Inc.
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This read/write flag is set when the TIM counter resets to $0000 after
reaching the modulo value programmed in the TIM counter modulo
registers. Clear TOF by reading the TIM status and control register
when TOF is set and then writing a logic 0 to TOF. If another TIM
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.
For More Information On This Product,
TIM status and control register (TSC)
TIM counter registers (TCNTH–TCNTL)
TIM counter modulo registers (TMODH–TMODL)
Enables TIM interrupt
Flags TIM overflows
Stops the TIM counter
Resets the TIM counter
Prescales the TIM counter clock
$004B
Bit 7
TOF
Figure 3. TIM Status and Control Register (TSC)
0
0
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= Unimplemented
Modulo Timer (TIM)
TOIE
6
0
TSTOP
5
1
TRST
4
0
0
3
0
0
PS2
2
0
PS1
1
0
MOTOROLA
Bit 0
PS0
0
6-tim