參數資料
型號: MC68HC05C9AFB
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PQFP44
封裝: QFP-44
文件頁數: 128/162頁
文件大小: 1093K
代理商: MC68HC05C9AFB
N
O
N-D
I
SC
L
O
SU
R
E
AG
R
EEMENT
R
E
Q
U
IR
ED
Capture/Compare Timer
Advance Information
MC68HC05C9A Rev. 5.0
68
Capture/Compare Timer
MOTOROLA
8.4.4 Alternate Timer Registers
The alternate timer registers (ATRH and ATRL), 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.
Address:
$001A — ATRH
Bit 7
6
54
32
1
Bit 0
Read:
Bit 15
Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
Bit 9
Bit 8
Write:
Reset:
11
Address:
$001B — ATRL
Bit 7
6
54
32
1
Bit 0
Read:
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Write:
Reset:
11
00
= Unimplemented
相關PDF資料
PDF描述
MC68HC05C9AMB 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDIP42
MC68HSC05C9AFN 8-BIT, MROM, 4.1 MHz, MICROCONTROLLER, PQCC44
MC68HC05E0 8-BIT, 4 MHz, MICROCONTROLLER, PQCC68
MC68HC05F2FB 8-BIT, MROM, MICROCONTROLLER, PQFP44
MC68HC05F2B 8-BIT, MROM, MICROCONTROLLER, PDIP42
相關代理商/技術參數
參數描述
MC68HC05C9AFN 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Microcontrollers
MC68HC05C9AMB 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Microcontrollers
MC68HC05C9AMFB 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Microcontrollers
MC68HC05C9AMFN 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Microcontrollers
MC68HC05C9AMP 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Microcontrollers