参数资料
型号: MB90F523BPFV
元件分类: 微控制器/微处理器
英文描述: 16-BIT, FLASH, 16 MHz, MICROCONTROLLER, PQFP120
封装: PLASTIC, QFP-120
文件页数: 92/99页
文件大小: 978K
代理商: MB90F523BPFV
MB90520A/520B Series
92
7.
Notes for A/D Conversion
The recommended external circuit impedance of analog inputs for MB90V520 is approximately 5 k
or less,
that for MB90F523B is approximately 15.5 k
or less, and that for MB90522A/523A/522B/523B is approximately
10 k
or less.
If using an external capacitor, the capacitance should be several thousand times the level of the chip’s internal
capacitor to allow for the partial potential between the external and internal capacitance.
If the impedance of the external circuit is too high, the analog voltage sampling interval may be too short. (for
sampling time
= 4 s, machine clock frequency = 16 MHz) .
Error
The relative error increases as |AVRH
AVRL| becomes smaller.
C
RON
Analog input
Comparator
MB90522A/523A/522B/523B
RON
= 2.2 k approx.
C
= 45 pF approx.
MB90F523B
RON
= 2.6 k approx.
C
= 28 pF approx.
Note : The values listed are an indication only.
Block diagram of analog input circuit model
相关PDF资料
PDF描述
MB90522APFF 16-BIT, MROM, 16 MHz, MICROCONTROLLER, PQFP120
MB90523APFF 16-BIT, MROM, 16 MHz, MICROCONTROLLER, PQFP120
MB90522BPFV 16-BIT, MROM, 16 MHz, MICROCONTROLLER, PQFP120
MB90522APFV 16-BIT, MROM, 16 MHz, MICROCONTROLLER, PQFP120
MB90523APFV 16-BIT, MROM, 16 MHz, MICROCONTROLLER, PQFP120
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