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參數資料
型號: MC68HC05C9A
廠商: Motorola, Inc.
元件分類: 8位微控制器
英文描述: 8-Bit Microcontroller(8位微控制器)
中文描述: 8位微控制器(8位微控制器)
文件頁數: 64/160頁
文件大小: 783K
代理商: MC68HC05C9A
L
G
R
Capture/Compare Timer
General Release Specification
MC68HC05C9A
Rev. 4.0
64
Capture/Compare Timer
MOTOROLA
8.4.4 Alternate Timer Registers (ATRH and ATRL)
The alternate timer registers, shown in
Figure 8-5
, contain the current
high and low bytes of the 16-bit counter. Reading ATRH before reading
ATRL causes ATRL to be latched until ATRL is read. Reading ATRL has
no effect on the timer overflow flag (TOF). Writing to the alternate timer
registers has no effect.
Figure 8-5. Alternate Timer Registers (ATRH and ATRL)
NOTE:
To prevent interrupts from occurring between readings of ATRH and
ATRL, set the interrupt flag in the condition code register before reading
ATRH, and clear the flag after reading ATRL.
ATRH
$001A
Bit 7
6
5
4
3
2
1
Bit 0
Read:
BIT15
BIT14
BIT13
BIT12
BIT11
BIT10
BIT9
BIT8
Write:
Reset:
1
1
1
1
1
1
1
1
ATRL
$001B
Bit 7
6
5
4
3
2
1
Bit 0
Read:
BIT7
BIT6
BIT5
BIT4
BIT3
BIT2
BIT1
BIT0
Write:
Reset:
1
1
1
1
1
1
0
0
= Unimplemented
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相關代理商/技術參數
參數描述
MC68HC05C9AB 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Microcontrollers
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