一区二区三区美女免费视频,91av国产精品

您好，
買賣IC網(wǎng)歡迎您。
請(qǐng)登錄
免費(fèi)注冊(cè)

您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄45320 > MR83C154XXX-36P883 (TEMIC SEMICONDUCTORS) 8-BIT, MROM, 36 MHz, MICROCONTROLLER, CQCC44 PDF資料下載

型號(hào)：	MR83C154XXX-36P883
廠商：	TEMIC SEMICONDUCTORS
元件分類：	微控制器/微處理器
英文描述：	8-BIT, MROM, 36 MHz, MICROCONTROLLER, CQCC44
文件頁(yè)數(shù)：	130/839頁(yè)
文件大?。?/td>	61013K
代理商：	MR83C154XXX-36P883

ATmega165A/PA/325A/PA/3250A/PA/645A/P/6450A/P [DATASHEET]

8285E–AVR–02/2013

25. IEEE 1149.1 (JTAG) Boundary-scan

Features

JTAG (IEEE std. 1149.1 compliant) Interface

Boundary-scan Capabilities According to the JTAG Standard

Full Scan of all Port Functions as well as Analog Circuitry having Off-chip Connections

Supports the Optional IDCODE Instruction

Additional Public AVR_RESET Instruction to Reset the AVR

System Overview

The Boundary-scan chain has the capability of driving and observing the logic levels on the digital I/O pins, as well

as the boundary between digital and analog logic for analog circuitry having off-chip connections. At system level,

all ICs having JTAG capabilities are connected serially by the TDI/TDO signals to form a long Shift Register. An

external controller sets up the devices to drive values at their output pins, and observe the input values received

from other devices. The controller compares the received data with the expected result. In this way, Boundary-scan

provides a mechanism for testing interconnections and integrity of components on Printed Circuits Boards by using

the four TAP signals only.

The four IEEE 1149.1 defined mandatory JTAG instructions IDCODE, BYPASS, SAMPLE/PRELOAD, and

EXTEST, as well as the AVR specific public JTAG instruction AVR_RESET can be used for testing the Printed Cir-

cuit Board. Initial scanning of the Data Register path will show the ID-Code of the device, since IDCODE is the

default JTAG instruction. It may be desirable to have the AVR device in reset during test mode. If not reset, inputs

to the device may be determined by the scan operations, and the internal software may be in an undetermined

state when exiting the test mode. Entering reset, the outputs of any port pin will instantly enter the high impedance

state, making the HIGHZ instruction redundant. If needed, the BYPASS instruction can be issued to make the

shortest possible scan chain through the device. The device can be set in the reset state either by pulling the exter-

nal RESET pin low, or issuing the AVR_RESET instruction with appropriate setting of the Reset Data Register.

The EXTEST instruction is used for sampling external pins and loading output pins with data. The data from the

output latch will be driven out on the pins as soon as the EXTEST instruction is loaded into the JTAG IR-Register.

Therefore, the SAMPLE/PRELOAD should also be used for setting initial values to the scan ring, to avoid damag-

ing the board when issuing the EXTEST instruction for the first time. SAMPLE/PRELOAD can also be used for

taking a snapshot of the external pins during normal operation of the part.

The JTAGEN Fuse must be programmed and the JTD bit in the I/O Register MCUCR must be cleared to enable

the JTAG Test Access Port.

When using the JTAG interface for Boundary-scan, using a JTAG TCK clock frequency higher than the internal

chip frequency is possible. The chip clock is not required to run.

相關(guān)PDF資料	PDF描述
MD83C154CXXX-25P883	8-BIT, MROM, 25 MHz, MICROCONTROLLER, CDIP40
MD83C154TXXX-25P883D	8-BIT, MROM, 25 MHz, MICROCONTROLLER, CDIP40
MQ83C154TXXX-25P883R	8-BIT, MROM, 25 MHz, MICROCONTROLLER, CQFP44
MQ83C154CXXX-25P883D	8-BIT, MROM, 25 MHz, MICROCONTROLLER, CQFP44
MD83C154CXXX-36P883	8-BIT, MROM, 36 MHz, MICROCONTROLLER, CDIP40

相關(guān)代理商/技術(shù)參數(shù)	參數(shù)描述
MR850	功能描述:整流器 3.0 Amp 50 Volt 150ns RoHS:否制造商:Vishay Semiconductors 產(chǎn)品:Standard Recovery Rectifiers 配置: 反向電壓:100 V 正向電壓下降: 恢復(fù)時(shí)間:1.2 us 正向連續(xù)電流:2 A 最大浪涌電流:35 A 反向電流 IR:5 uA 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DO-221AC 封裝:Reel
MR850 _AY _10001	制造商:PanJit Touch Screens 功能描述:
MR850 R0	制造商:SKMI/Taiwan 功能描述:Diode Switching 50V 3A 2-Pin DO-201AD T/R
MR850_ R2 _10001	制造商:PanJit Touch Screens 功能描述:
MR850_09	制造商:PANJIT 制造商全稱:Pan Jit International Inc. 功能描述:SOFT RECOVERY, FAST SWITCHING PLASTIC RECTIFIER

發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

(若只采購(gòu)一條型號(hào)，填寫一行即可)

*型號(hào)	*數(shù)量	廠商	批號(hào)	封裝

采購(gòu)需求

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

我的聯(lián)系方式

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)