参数资料
型号: MC68HC05T16B
厂商: MOTOROLA INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDIP56
封装: PLASTIC, SDIP-56
文件页数: 120/128页
文件大小: 734K
代理商: MC68HC05T16B
MC68HC05T16
MOTOROLA
10-3
ANALOG TO DIGITAL CONVERTER
10
10.3
ADC Control and Status Register
This read/write register, located at address $3C, contains six control bits and one status bit.
RESULT - Comparator Status (Read Only)
1 (set)
AD4-0 value greater than analog in.
0 (clear) –
AD4-0 value is less than analog in.
CHNL - Channel Select
1 (set)
ADCIN1 is selected for conversion.
0 (clear) –
ADCIN0 is selected for conversion
AD4-0 - ADC Digital Result
These bits are written by the user to perform successive approximations in software. When a value
causes the RESULT bit to change state from the value immediately before or after it, AD4-0 are
considered to be the digital equivalent of the analog input. Note that when AD4-0 are all 1’s, ADC
is virtually turned off to minimize power consumption.
Address
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
State
on reset
$3C
RESULT
CHNL
AD4
AD3
AD2
AD1
AD0
u000 0000
TPG
89
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