Datasheet > CDP1855E

CDP1855E

更新时间： 2024-11-17 22:48:47

品牌	Logo	应用领域
英特矽尔 - INTERSIL		外围集成电路光电二极管时钟
页数	文件大小	规格书
15页	88K
描述
8-Bit Programmable Multiply/Divide Unit

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中文翻译

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数据手册

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CDP1855E 数据手册

CDP1855,

CDP1855C

8-Bit Programmable

Multiply/Divide Unit

March 1997

Features

Description

• Cascadable Up to 4 Units for 32-Bit by 32-Bit Multiply

^{or 64}÷ 32-Bit Divide

The CDP1855 and CDP1855C are CMOS 8-bit multi-

ply/divide units which can be used to greatly increase the

capabilities of 8-bit microprocessors. They perform multiply

and divide operations on unsigned, binary operators. In

general, microprocessors do not contain multiply or divide

instructions and even efﬁciently coded multiply or divide

subroutines require considerable memory and execution

time. These multiply/divide units directly interface to the

CDP1800-series microprocessors via the N-lines and can

easily be conﬁgured to ﬁt in either the memory or I/O space

of other 8-bit microprocessors.

^{• 8-Bit by 8-Bit Multiply or 16}÷ 8-Bit Divide in 5.6µs at

5V or 2.8µs at 10V

• Direct Interface to CDP1800-Series Microprocessors

• Easy Interface to Other 8-Bit Microprocessors

• Signiﬁcantly Increases Throughput of Microprocessor

Used for Arithmetic Calculations

Ordering Information

The multiple/divide unit is based on a method of multiplying

by add and shift right operations and dividing by subtract and

shift left operations. The device is structured to permit cas-

cading identical units to handle operands up to 32 bits.

PKG.

NO.

PACKAGE TEMP. RANGE

-40 C to +85 C CDP1855CE CDP1855E E28.6

CDP1855CEX E28.6

-40 C to +85 C CDP1855CD CDP1855D D28.6

CDP1855CDX D28.6

10V

PDIP

Burn-In

SBDIP

Burn-In

The CDP1855 and CDP1855C are functionally identical.

They differ in that the CDP1855 has a recommended

operating voltage range of 4V to 10.5V, and the CDP1855C,

a recommended operating voltage range of 4V to 6.5V.

The CDP1855 and CDP1855C types are supplied in a 28

lead hermetic dual-in-line ceramic package (D sufﬁx) and in

a 28 lead dual-in-line plastic package (E sufﬁx). The

CDP1855C is also available in chip form (H sufﬁx).

Pinout

Circuit Conﬁguration

28 LEAD DIP

TOP VIEW

CLEAR

XTAL

CLEAR

CTL

28 V

CLK

RA0

RA1

RA2

STB

27 CN0

26 CN1

25 CI

CN0

CN1

C.O./O.F.

TPB

MRD

RD/WE

CDP1855

SHIFT

CLK

22 BUS 7

21 BUS 6

CDP1802

STB

BUS 5

RD/WE 10

RA2 11

RA1 12

RA0 13

19 BUS 4

18 BUS 3

17 BUS 2

16 BUS 1

15 BUS 0

CTL

BUS

FIGURE 1. MDU ADDRESSED AS I/O DEVICE

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

File Number 1053.2

4-47

12 3 4 5 6 7...15

中文翻译

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与CDP1855E相关器件

型号	品牌	获取价格	描述	数据表
CDP1857	INTERSIL	获取价格	4-Bit Bus Buffer/Separator
CDP1857C	INTERSIL	获取价格	4-Bit Bus Buffer/Separator
CDP1857C_1	INTERSIL	获取价格	4-Bit Bus Buffer/Separator
CDP1857CD	INTERSIL	获取价格	4-Bit Bus Buffer/Separator
CDP1857CD3	RENESAS	获取价格	CDP1857CD3
CDP1857CDX	RENESAS	获取价格	CDP1857CDX
CDP1857CE	INTERSIL	获取价格	4-Bit Bus Buffer/Separator
CDP1857CEX	RENESAS	获取价格	CDP1857CEX
CDP1857D	RENESAS	获取价格	CDP1857D
CDP1857E	ETC	获取价格	Peripheral IC

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