參數(shù)資料
型號: MC68HC05G3
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, OTPROM, 2 MHz, MICROCONTROLLER, PQFP80
封裝: QFP-80
文件頁數(shù): 120/128頁
文件大?。?/td> 290K
代理商: MC68HC05G3
Page 81
Section 8: TIMER SYSTEM
MOTOROLA
MC68HC05G3 (705G4) Specification Rev. 1.1
8.1.4
TIMER CONTROL REGISTER (TCR) $12
The TCR is a read/write register containing five control bits. Three bits enable interrupts
associated with the timer status register flags ICF, OCF, and TOF.
READ:
anytime
WRITE:
anytime
ICIE
Input Capture Interrupt Enable
1 - Interrupt enabled
0 - Interrupt disabled
OC1IE
Output Compare 1 Interrupt Enable
1 - Interrupt enabled
0 - Interrupt disabled
TOIE
Timer Overflow Interrupt Enable
1 - Interrupt enabled
0 - Interrupt disabled
BITS 2-4
Not used
Always read zero
IEDG
Input Edge
Value of input edge determines which level transition on TCAP pin will trigger
free-running counter transfer to the input capture register
Reset does not affect the IEDG bit (U = unaffected).
1 - Positive edge
0 - Negative edge
OLVL
Output Level
Value of output level is clocked into output level register by the next successful
output compare and will appear on the TCMP pin if DDRG3 also is set. This bit
and the output level register are cleared by reset.
1 - High output
0 - Low output
ICIE
$0012
OC1IE
TOIE
0
IEDG
OLVL
TCR
B7
B6
B5
B4
B3
B2
B1
B0
000000
U
0
RESET:
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