參數(shù)資料
型號: MB91F355APMT-002
元件分類: 微控制器/微處理器
英文描述: RISC MICROCONTROLLER, PQFP176
封裝: 24 X 24 MM, 1.70 MM HEIGHT, 0.50 MM PPITCH, LEAD FREE, PLASTIC, LQFP-176
文件頁數(shù): 126/140頁
文件大小: 3803K
代理商: MB91F355APMT-002
MB91350A Series
86
DS07-16503-5E
14. A/D converter
(1) Description
The A/D converter converts the analog input voltage into a digital value. It has the following features :
Conversion time : 1.48
s minimum per channel
Employing serial / parallel conversion type for sample and hold circuit.
10-bit resolution (switchable between 8 and 10 bits)
Programmatic selection of the analog input from among 12 channels
(The MB91F353A/353A/352A/351A are input 8 channels.)
Conversion mode
Single conversion mode : Converts 1 selected channel a single time.
Scan conversion mode
: Scanning conversion of up to 4 channels.
Converted data is stored in a data buffer (a total of 4 data buffers) .
An interrupt request to the CPU can be generated upon completion of A/D conversion. The interrupt can be
used to start a DMA transfer.
The startup source can be selected from among software, external trigger (falling edge), and reload timer ch.2
(rising edge).
(2) Register list
ADCS1
ADCS2
bit 15
bit 0
ADTL0
ADTH0
ADTL2
ADTL1
ADTH1
ADTH2
ADTL3
ADTH3
bit 8 bit 7
Control status register (ADCS2/ADCS1)
Conversion time setting register (ADCT)
Converted data register 0 (ADTH0/ADTL0)
Converted data register 1 (ADTH1/ADTL1)
Converted data register 2 (ADTH2/ADTL2)
Converted data register 3 (ADTH3/ADTL3)
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