參數(shù)資料
型號: MC68HC805P18P
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, EEPROM, 2.1 MHz, MICROCONTROLLER, PDIP28
封裝: PLASTIC, DIP-28
文件頁數(shù): 135/144頁
文件大小: 1292K
代理商: MC68HC805P18P
Advance Information
MC68HC(8)05P18 — Rev. 2.0
90
16-Bit Timer
MOTOROLA
16-Bit Timer
Figure 10-5. State Timing Diagram for Timer Reset
10.4 Output Compare
The output compare function may be used to generate an output
waveform and/or as an elapsed time indicator. All of the bits in the output
compare register pair OCRH/OCRL are readable and writable and are
not altered by the 16-bit timer’s control logic. Reset does not affect the
contents of these registers. If the output compare function is not utilized,
its registers can be used for data storage. See Figure 10-6.
NOTE: The counter and control registers are the only 16-bit timer registers affected by reset.
PH2
CLOCK
INTERNAL
RESET
16-BIT
FREE-RUNNING
COUNTER
RESET
(EXTERNAL
OR OTHER)
$FFFC
$FFFD
$FFFE
$FFFF
Register name and address: OCRH — $0016
Bit 7
654321
Bit 0
Read:
OCRH7
OCRH6
OCRH5
OCRH4
OCRH3
OCRH2
OCRH1
OCRH0
Write:
Reset:
Unaffected by reset
Register name and address: OCRL — $0017
Bit 7
654321
Bit 0
Read:
OCRL7
OCRL6
OCRL5
OCRL4
OCRL3
OCRL2
OCRL1
OCRL0
Write:
Reset:
Unaffected by reset
= Unimplemented
Figure 10-6. Output Compare Registers (OCRH/OCRL)
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For More Information On This Product,
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