參數(shù)資料
型號: MC68HSC05C9A
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(shù): 63/160頁
文件大?。?/td> 783K
代理商: MC68HSC05C9A
Capture/Compare Timer
Timer I/O Registers
MC68HC05C9A
Rev. 4.0
General Release Specification
MOTOROLA
Capture/Compare Timer
63
L
G
R
8.4.3 Timer Registers (TRH and TRL)
The timer registers, shown in
Figure 8-4
, contains the current high and
low bytes of the 16-bit counter. Reading TRH before reading TRL
causes TRL to be latched until TRL is read. Reading TRL after reading
the timer status register clears the timer overflow flag (TOF). Writing to
the timer registers has no effect.
Figure 8-4. Timer Registers (TRH and TRL)
TRH
$0018
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
TRL
$0019
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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