參數(shù)資料
型號(hào): C05M68HC05M
廠商: Motorola, Inc.
英文描述: HCMOS Microcontroller Unit
中文描述: HCMOS微控制器
文件頁數(shù): 71/130頁
文件大?。?/td> 1541K
代理商: C05M68HC05M
Capture/Compare Timer
Timer I/O Registers
MC68HC705P6A
Rev. 2.0
Advance Information
MOTOROLA
Capture/Compare Timer
71
8.4.3 Timer Registers
The timer registers (TRH and TRL), 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.
Address:
TRH
$0018
Bit 7
6
5
4
3
2
1
Bit 0
Read:
TRH7
TRH6
TRH5
TRH4
TRH3
TRH2
TRH1
TRH0
Write
Reset:
1
1
1
1
1
1
1
1
Address:
TRL
$0019
Bit 7
6
5
4
3
2
1
Bit 0
Write:
Reset:
1
1
1
1
1
1
0
0
= Unimplemented
Figure 8-4. Timer Registers (TRH and TRL)
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