Datasheet > NAT9914APL

NAT9914APL

更新时间： 2024-02-22 02:42:08

品牌	Logo	应用领域
美国国家仪器公司 - NI		/
页数	文件大小	规格书
12页	149K
描述
Bus Controller, CMOS, PQCC44

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技术参数
数据手册

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NAT9914APL 技术参数

是否Rohs认证：	不符合	生命周期：	Contact Manufacturer
Reach Compliance Code：	compliant	风险等级：	5.82
Is Samacsys：	N	JESD-30 代码：	S-PQCC-J44
JESD-609代码：	e0	端子数量：	44
最高工作温度：	70 °C	最低工作温度：
封装主体材料：	PLASTIC/EPOXY	封装代码：	QCCJ
封装等效代码：	LDCC44,.7SQ	封装形状：	SQUARE
封装形式：	CHIP CARRIER	电源：	5 V
认证状态：	Not Qualified	子类别：	Bus Controllers
最大压摆率：	45 mA	标称供电电压：	5 V
表面贴装：	YES	技术：	CMOS
温度等级：	COMMERCIAL	端子面层：	Tin/Lead (Sn/Pb)
端子形式：	J BEND	端子节距：	1.27 mm
端子位置：	QUAD	Base Number Matches：	1

NAT9914APL 数据手册

IEEE 488.2 Controller Chip

Drop-In Replacement for TI TMS9914A

NAT9914APD

NAT9914APL

Features

• Pin compatible with TI TMS9914A

• Software compatible with NEC µPD7210

or TI TMS9914A controller chips

• Low power consumption

• Meets all IEEE 488.2 requirements

– Bus line monitoring

– Preferred implementation of requesting

service

– Will not send messages when there are

no Listeners

• Performs all IEEE 488.1 interface functions

• Programmable data transfer rate (T1 delays

of 350 ns, 500 ns, 1.1 µs, and 2 µs)

• Automatic EOS and/or NL message

detection

• Direct memory access (DMA)

• Automatically processes IEEE 488

commands and reads undeﬁned commands

• TTL-compatible CMOS device

• Programmable clock rate up to 20 MHz

• Reduces driver overhead

NAT9914

Description

for the test system developer are reduced

development time and cost, because systems

can perform all the interface functions deﬁned are more compatible and reliable. The

The NAT9914 IEEE 488.2 controller chip

by that the IEEE Standard 488.1-1987, and

also meets the additional requirements and

recommendations of the IEEE Standard

488.2-1987. Connected between the

processor and the IEEE 488 bus, the

NAT9914 brings the full power of

IEEE 488.2 to the design engineer along

with numerous other design and

performance beneﬁts, while retaining the

40-pin and 44-pin hardware conﬁgurations

– Does not lose a data byte if ATN is

asserted while transmitting data

NAT9914 provides high-level management of of the TI TMS 9914A.

the IEEE 488 bus, signiﬁcantly increases the

throughput of driver software, and simpliﬁes General

both the hardware and software design. The

NAT9914 performs complete IEEE 488

Talker, Listener, and Controller functions. In

addition to its numerous improvements, the

NAT9914 is also completely pin compatible

with the TI TMS 9914A and software

compatible with the NEC µPD7210 and TI

TMS9914A controller chips.

The NAT9914 manages the IEEE 488 bus.

You program the IEEE 488 bus by writing

control words into the appropriate registers.

CPU-readable status registers supply

operational feedback. The NAT9914 mode

determines the function of these registers.

On power up or reset, the NAT9914 registers

resemble the TMS9914A register

set with additional registers that supply extra

functionality and IEEE 488.2 compatibility.

In this mode, the NAT9914 is completely

pin compatible with the TI TMS9914A.

If you enable the 7210 mode, the registers

IEEE 488.2 Overview

The IEEE 488.2 standard removes the

ambiguities of IEEE 488.1 by standardizing

the way instruments and controllers operate.

It deﬁnes data formats, status reporting, error resemble the NEC µPD7210 register set

handling, and common conﬁguration

commands to which all IEEE 488.2

instruments must respond in a precise

manner. It also deﬁnes a set of controller

requirements. The beneﬁts of IEEE 488.2

with additional registers that supply extra

functionality and IEEE 488.2 compatibility.

This mode is not pin compatible with the

NECµPD7210. Figure 2 shows the key

components of the NAT9914.

Note: For more details about the NAT9914 see the NAT9914 Reference Manual, Part Number 320775-01.

340497B-01

071596

12 3 4 5 6 7...12

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与NAT9914APL相关器件

型号	品牌	描述	获取价格	数据表
NAT9914BPD	ETC	IEEE 488.2 Controller Chip	获取价格
NAT9914BPD-9	NI	暂无描述	获取价格
NAT9914BPL	ETC	IEEE 488.2 Controller Chip	获取价格
NAT9914BPL-27	NI	GPIB Bus Controller, CMOS, PQCC44, PLASTIC, LCC-44	获取价格
NAT9914BPQ	ETC	IEEE 488.2 Controller Chip	获取价格
NAT9914BPQF-84	NI	GPIB Bus Controller, CMOS, PQFP44, ROHS COMPLIANT, PLASTIC, QFP-44	获取价格

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