參數(shù)資料
型號(hào): AT90LS8535-4AI
廠商: Atmel
文件頁數(shù): 68/127頁
文件大?。?/td> 0K
描述: IC MCU 8K 4MHZ A/D LV IT 44TQFP
標(biāo)準(zhǔn)包裝: 160
系列: AVR® 90LS
核心處理器: AVR
芯體尺寸: 8-位
速度: 4MHz
連通性: SPI,UART/USART
外圍設(shè)備: 欠壓檢測(cè)/復(fù)位,POR,PWM,WDT
輸入/輸出數(shù): 32
程序存儲(chǔ)器容量: 8KB(4K x 16)
程序存儲(chǔ)器類型: 閃存
EEPROM 大?。?/td> 512 x 8
RAM 容量: 512 x 8
電壓 - 電源 (Vcc/Vdd): 2.7 V ~ 6 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 8x10b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 44-TQFP
包裝: 托盤
1997 Microchip Technology Inc.
DS30272A-page 45
PIC16C71X
7.9
Transfer Function
The ideal transfer function of the A/D converter is as fol-
lows: the rst transition occurs when the analog input
voltage (VAIN) is Analog VREF/256 (Figure 7-6).
7.10
References
A very good reference for understanding A/D convert-
ers is the "Analog-Digital Conversion Handbook" third
edition, published by Prentice Hall (ISBN 0-13-03-
2848-0).
FIGURE 7-6:
A/D TRANSFER FUNCTION
Digital
code
output
FFh
FEh
04h
03h
02h
01h
00h
0.5
LSb
1
LSb
2
LSb
3
LSb
4
LSb
255
LSb
256
LSb
(full
scale)
Analog input voltage
FIGURE 7-7:
FLOWCHART OF A/D OPERATION
Acquire
ADON = 0
ADON = 0?
GO = 0?
A/D Clock
GO = 0
ADIF = 0
Abort Conversion
SLEEP
Power-down A/D
Wait 2 TAD
Wake-up
Yes
No
Yes
No
Yes
Finish Conversion
GO = 0
ADIF = 1
Device in
No
Yes
Finish Conversion
GO = 0
ADIF = 1
Wait 2 TAD
Stay in Sleep
Selected Channel
= RC?
SLEEP
No
Yes
Instruction?
Start of A/D
Conversion Delayed
1 Instruction Cycle
From Sleep?
Power-down A/D
Yes
No
Wait 2 TAD
Finish Conversion
GO = 0
ADIF = 1
SLEEP?
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AT90LS8535-4PC 功能描述:8位微控制器 -MCU 8k bit RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT