ATMEGA64A-AU 参数 Datasheet PDF下载

型号：	ATMEGA64A-AU
PDF下载：	下载PDF文件查看货源
内容描述：	8位微控制器，带有64K字节的系统内可编程闪存 [8-bit Microcontroller with 64K Bytes In-System Programmable Flash]
分类和应用：	闪存微控制器
文件页数/大小：	392 页 / 7964 K
品牌：	ATMEL [ ATMEL ]

ATmega64A

Table 25-5. Boundary-scan Signals for the ADC⁽¹⁾(Continued)

Direction

Output Values when

Recommended Inputs

are Used, and CPU is

not Using the ADC

as Seen

from the

ADC

Recommended

Input when not

in Use

Signal

Name

Description

GNDEN

Input

Ground the negative

input to comparator

when true

HOLD

Input

Sample&Hold signal.

Sample analog signal

when low. Hold signal

when high. If gain

stages are used, this

signal must go active

when ACLK is high.

IREFEN

Input

Enables Band-gap

reference as AREF

signal to DAC

MUXEN_7

MUXEN_6

MUXEN_5

MUXEN_4

MUXEN_3

MUXEN_2

MUXEN_1

MUXEN_0

NEGSEL_2

Input

Input Mux bit 7

Input Mux bit 6

Input Mux bit 5

Input Mux bit 4

Input Mux bit 3

Input Mux bit 2

Input Mux bit 1

Input Mux bit 0

Input Mux for negative

input for differential

signal, bit 2

NEGSEL_1

NEGSEL_0

Input

Input Mux for negative

input for differential

signal, bit 1

Input Mux for negative

input for differential

signal, bit 0

PASSEN

PRECH

Input

Enable pass-gate of

gain stages.

Precharge output

latch of comparator

(Active low)

271

8160C–AVR–07/09

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ATMEGA64A-AU 参数 Datasheet PDF下载

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