參數(shù)資料
型號: MB91F155PFV-G
元件分類: 微控制器/微處理器
英文描述: 32-BIT, FLASH, 33 MHz, RISC MICROCONTROLLER, PQFP144
封裝: PLASTIC, LQFP-144
文件頁數(shù): 55/103頁
文件大?。?/td> 866K
代理商: MB91F155PFV-G
MB91F155/MB91154
55
7.
8/10-bit A/D Converter (Sequential Conversion Type)
The A/D converter is a module that converts analog input voltage into a digital value. Its features are as follows :
A minimum conversion time of 5.0
s/ch. (Including sampling time at a 33 MHz machine clock)
Contains a sample and hold circuit.
Resolution : 10 or 8 bits selectable.
Selection of analog input from eight channels by program
DMA transfer can be invoked by interrupt.
Selection of an invoking factor from software, external pin trigger (falling edge) , and 16-bit reload timer (rising
edge) .
Block Diagram
Single conversion mode :
Selects and converts one channel.
Continuous conversion mode : Converts a specified channel repeatedly.
Stop and convert mode :
Stops after converting one channel and stands by until invoked the next time.
(Conversion invoking can be synchronized.)
φ
MP
Decoder
Comparator
Data register
A/D control register 1
A/D control register 2
Sample & hold circuit
AN0
AN1
AN2
AN3
AN4
AN5
AN6
AN7
ADCR
D/A converter
Sequential compare
register
Input
circuit
ADCS1
, 2
Operating clock
Prescaler
16-bit reload timer 2
External pin trigger
AVSS AVR
± AVSS
R
-
BUS
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