参数资料
型号: MC68HSC05K0P
厂商: MOTOROLA INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, MICROCONTROLLER, PDIP16
封装: PLASTIC, DIP-16
文件页数: 132/154页
文件大小: 1544K
代理商: MC68HSC05K0P
Multifunction Timer
Timer Status and Control Register
MC68HC05K0 MC68HC05K1 — Rev. 2.0
Technical Data
MOTOROLA
Multifunction Timer
79
TOF — Timer Overflow Flag
This read-only flag becomes set when the first eight stages of the
counter roll over from $FF to $00. TOF generates a timer overflow
interrupt request if TOIE is also set. Clear TOF by writing a logic 1 to
the TOFR bit. Writing to TOF has no effect. Reset clears TOF.
RTIF — Real-Time Interrupt Flag
This read-only flag becomes set when the selected real-time interrupt
(RTI) output becomes active. RTIF generates a real-time interrupt
request if RTIE is also set. Clear RTIF by writing a logic 1 to the
RTIFR bit. Writing to RTIF has no effect. Reset clears RTIF.
TOIE — Timer Overflow Interrupt Enable Bit
This read/write bit enables timer overflow interrupts. Reset clears
TOIE.
1 = Timer overflow interrupts enabled
0 = Timer overflow interrupts disabled
RTIE — Real-Time Interrupt Enable Bit
This read/write bit enables real-time interrupts. Reset clears RTIE.
1 = Real-time interrupts enabled
0 = Real-time interrupts disabled
TOFR — Timer Overflow Flag Reset Bit
Writing a logic 1 to this write-only bit clears the TOF bit. TOFR always
reads as a logic 0. Reset does not affect TOFR.
Address:
$0008
Bit 7
654321
Bit 0
Read:
TOF
RTIF
TOIE
RTIE
00
RT1
RT0
Write:
TOFR
RTIFR
Reset:
00000011
= Unimplemented
Figure 8-2. Timer Status and Control Register (TSCR)
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