参数资料
型号: MC68HC908JL8MFAE
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PQFP32
封装: PLASTIC, LQFP-32
文件页数: 38/56页
文件大小: 648K
代理商: MC68HC908JL8MFAE
MC68HC908JL8SM/D
Analog-to-Digital Converter (ADC)
MC68HC908JL8MC68HC908JK8
ADC Status and
Control Register
COCO — Conversions Complete Bit
When the AIEN bit is a logic 0, the COCO is a read-only bit which is set each
time a conversion is completed. This bit is cleared whenever ADSCR is
written or whenever the ADR is read.
When the AIEN bit is a logic 1 (CPU interrupt enabled), COCO will always
be logic 0 when read.
1 = Conversion completed (AIEN = 0)
AIEN — ADC Interrupt Enable Bit
1 = ADC interrupt enabled
ADCO — ADC Continuous Conversion Bit
1 = Continuous ADC conversion
0 = Single ADC conversion
ADCH[4:0] — ADC Channel Select Bits
NOTE:
Startup from the ADC power off state requires one conversion cycle to stabilize.
$003C
Bit 7
654321
Bit 0
COCO
AIEN
ADCO
ADCH4
ADCH3
ADCH2
ADCH1
ADCH0
Reset:
00011111
Figure 36. ADC Status and Control Register (ADSCR)
Table 11. MUX Channel Select
ADCH4 ADCH3 ADCH2 ADCH1 ADCH0
ADC Channel
Input Select
0
0000
ADC0
PTB0
0
0001
ADC1
PTB1
0
0010
ADC2
PTB2
0
0011
ADC3
PTB3
0
0100
ADC4
PTB4
0
0101
ADC5
PTB5
0
0110
ADC6
PTB6
0
0111
ADC7
PTB7
0
1000
ADC8
PTD3
0
1001
ADC9
PTD2
0
1010
ADC10
PTD1
0
1011
ADC11
PTD0
0
1100
ADC12
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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