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参数资料
| 型号： | MC68HC05SR3FB |
| 厂商： | FREESCALE SEMICONDUCTOR INC |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, MROM, 2 MHz, MICROCONTROLLER, PQFP44 |
| 封装： | QFP-44 |
| 文件页数： | 50/96页 |
| 文件大小： | 3143K |
| 代理商： | MC68HC05SR3FB |
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Freescale
7-4
MC68HC05SR3
ANALOG TO DIGITAL CONVERTER
7
Using a port D pin as both an analog and digital input simultaneously is prohibited. When the ADC
is enabled (ADON=1) and one of channels 0 to 5 is selected, the corresponding Port D pin will
appear as a logic zero when read from the Port Data Register.
7.3
ADC Data Register (ADDR)
The ADDR stores the result of a valid ADC conversion when the COCO bits is set in ADSCR.
7.4
ADC during Low Power Modes
The ADC continues normal operation in WAIT mode. To reduce power consumption in WAIT
mode, the ADON and ADRC bits in the ADSCR should be cleared if the ADC is not used. If the
ADC is in use and the internal bus clock is above 1MHz, it is recommended that the ADRC bit be
cleared.
In STOP mode, the ADC stops operation.
Table 7-1 ADC Channel Assignments
CH2
CH1
CH0
Channel
Selected Signal
0
AD0 on PD0
0
1
AD1 on PD1
0
1
0
2
AD2 on PD2
0
1
3
AD3 on PD3
10
0
4
VRH
10
1
5
VRL
11
0
6
(VRH–VRL) ÷ 4
11
1
7
(VRH–VRL) ÷ 2
Address
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
State
on reset
$0F
AD7
AD6
AD5
AD4
AD3
AD2
AD1
AD0
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TPG
52
05SR3.Book Page 4 Thursday, August 4, 2005 1:08 PM
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相关代理商/技术参数 |
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|---|---|
| MC68HC05SU3A | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:Fully static chip design featuring the industry standard 8-bit M68HC05 core |
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