參數(shù)資料
型號: MC68HC05P18ACDW
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDSO28
封裝: SOIC-28
文件頁數(shù): 101/130頁
文件大?。?/td> 1310K
代理商: MC68HC05P18ACDW
NON-DISCLOSURE
AGREEMENT
REQUIRED
16-Bit Timer
Technical Data
MC68HC05P18A
16-Bit Timer
8.6 Timer Control Register
The timer control (TCR) shown in Figure 8-10 and free-running counter
(TMRH, TMRL, ACRH, 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.
ICIE — Input Capture Interrupt Enable Bit
Bit 7, when set, enables input capture interrupts to the CPU. The
interrupt will occur at the same time bit 7 (ICF) in the TSR register is
set.
OCIE — Output Comapre Interrupt Enable Bit
Bit 6, when set, enables output compare interrupts to the CPU. The
interrupt will occur at the same time bit 6 (OCF) in the TSR register is
set.
TOIE — Timer Overflow Interrupt Enable Bit
Bit 5, when set, enables timer overflow (rollover) interrupts to the
CPU. The interrupt will occur at the same time bit 5 (TOF) in the TSR
register is set.
IEDG — Input Capture Edge Select Bit
Bit 1 selects which edge of the input capture signal will trigger a
transfer of the contents of the free-running counter registers to the
input capture registers. Clearing this bit will select the falling edge,
setting it selects the rising edge.
Address:
$0012
Bit 7
654321
Bit 0
Read:
ICIE
OCIE
TOIE
000
IEDG
OLVL
Write:
Reset:
000000
U
0
= Unimplemented
U = Unaffected
Figure 8-10. 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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