參數(shù)資料
型號: MC68HC805P18CDW
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, PDSO28
封裝: SOIC-28
文件頁數(shù): 139/144頁
文件大?。?/td> 1292K
代理商: MC68HC805P18CDW
Advance Information
MC68HC(8)05P18 — Rev. 2.0
94
16-Bit Timer
MOTOROLA
16-Bit Timer
Figure 10-9. State Timing Diagram for Input Capture
10.6 Timer Control Register
The timer control (TCR) shown in Figure 10-10 and free-running counter
(TMRH, TMRL, ACRH, and ACRL) registers are the only registers of the
16-bit timer affected by reset. The output compare port (TCMP) is forced
low after reset and remains low until OLVL is set and a valid output
compare occurs.
INPUT
CAPTURE
FLAG
INPUT
CAPTURE
REGISTER
16-BIT
FREE-RUNNING
COUNTER
TCAP
PIN
INPUT
CAPTURE
LATCH
PH2
CLOCK
Note: If the input edge occurs in the shaded area from one T10 timer state to the other T10 timer state, the input capture
ag is set during the next T11 timer state.
$FFEC
$FFED
$FFEE
$FFEF
$FFEB
$????
$FFED
(SEE NOTE)
Address:
$0012
Bit 7
654321
Bit 0
Read:
ICIE
OCIE
TOIE
000
IEDG
OLVL
Write:
Reset:
00000000
= Unimplemented
Figure 10-10. Timer Control Register (TCR)
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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