參數(shù)資料
型號: MC68HC05P9AVP
廠商: 飛思卡爾半導(dǎo)體(中國)有限公司
英文描述: HCMOS Microcontroller Unit
中文描述: HCMOS微控制器
文件頁數(shù): 123/158頁
文件大小: 1106K
代理商: MC68HC05P9AVP
ADC
I/O Registers
MOTOROLA
ADC
123
ADRC — ADC RC (Oscillator)
This read/write bit turns on the internal RC oscillator to drive the ADC.
If the internal clock frequency (f
OP
) is less than 1 MHz, ADRC must be
set. When the RC oscillator is turned on, it requires a time, t
ADRC
, to
stabilize, and results can be inaccurate during this time. Resets clear
the ADRC bit.
1 = Internal RC oscillator drives ADC
0 = Internal clock drives ADC
When the internal RC oscillator is being used as the ADC clock, two
limitations apply:
Because of the frequency tolerance of the RC oscillator and its
asynchronism with the internal clock, the conversion complete flag
must be used to determine when a conversion sequence is
complete.
The conversion process runs at the nominal 1.5-MHz rate, but the
conversion results must be transferred to the ADC data register
synchronously with the internal clock; therefore, the conversion
process is limited to a maximum of one channel every internal
clock cycle.
ADON — ADC On
This read/write bit turns on the ADC. When the ADC is on, it requires
a time, t
ADON
, for the current sources to stabilize. During this time,
results can be inaccurate. Resets clear the ADON bit.
1 = ADC turned on
0 = ADC turned off
Bits 4 and 3 — Not used
Bits 4 and 3 always read as logic 0s.
11-mc68hc05p9a
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
.
相關(guān)PDF資料
PDF描述
MC68HC05P9ACP HCMOS Microcontroller Unit
MC68HC05P9ADW HCMOS Microcontroller Unit
MC68HC05P9AMDW HCMOS Microcontroller Unit
MC68HC05P9AMP HCMOS Microcontroller Unit
MC68HC05P9AP HCMOS Microcontroller Unit
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MC68HC05P9DW 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS MICROCONTROLLER UNIT
MC68HC05P9P 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS MICROCONTROLLER UNIT
MC68HC05PV8 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Techinal Data - rev 1.9
MC68HC05PV8A 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Techinal Data - rev 1.9
MC68HC05RC16 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:General Release Specification