参数资料
型号: MC68HC05P9AMDW
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDSO28
封装: SOIC-28
文件页数: 155/158页
文件大小: 3885K
代理商: MC68HC05P9AMDW
Timer
96
Timer
IEDG — Input Edge
The state of this read/write bit determines whether a positive or
negative transition on the PD7/TCAP pin triggers a transfer of the
contents of the timer registers to the input capture registers. Reset
has no effect on the IEDG bit.
1 = Positive edge (low-to-high transition) triggers input capture
0 = Negative edge (high-to-low transition) triggers input capture
OLVL — Output Level
The state of this read/write bit determines whether a logic 1 or a logic
0 appears on the TCMP pin when a successful output compare
occurs. Reset clears the OLVL bit.
1 = TCMP goes high on output compare
0 = TCMP goes low on output compare
Timer Status
Register
The timer status register (TSR) contains flags for the following events:
An active signal on the PD7/TCAP pin, transferring the contents of
the timer registers to the input capture registers
A match between the 16-bit counter and the output compare
registers, transferring the OLVL bit to the TCMP pin
A timer rollover from $FFFF to $0000
$0013
Bit 7
654321
Bit 0
Read:
ICF
OCF
TOF
00000
Write:
Reset:
U
00000
= Unimplemented
U = Unaffected
Figure 52. Timer Status Register (TSR)
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For More Information On This Product,
Go to: www.freescale.com
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