Datasheet > CDP1851CH

CDP1851CH

更新时间： 2024-01-14 14:04:21

品牌	Logo	应用领域
瑞萨 - RENESAS		外围集成电路
页数	文件大小	规格书
13页	115K
描述
20 I/O, PIA-GENERAL PURPOSE, UUC40, DIE

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CDP1851CH 技术参数

生命周期：	Transferred	包装说明：	,
Reach Compliance Code：	unknown	风险等级：	5.82

CDP1851CH 数据手册

CDP1851,

CDP1851C

March 1997

CMOS Programmable I/O Interface

Features

Description

• 20 Programmable I/O Lines

THE CDP1851 and CDP1851C are CMOS programmable two-

port I/Os designed for use as general-purpose I/O devices.

They are directly compatible with CDP1800-series micropro-

cessors functioning at maximum clock frequency. Each port

can be programmed in either byte-I/O or bit-programmable

modes for interfacing with peripheral devices such as printers

and keyboards.

• Programmable for Operation in Four Modes:

- Input

- Output

- Bidirectional

- Bit-programmable

Both ports A and B can be separately programmed to be 8-bit

input or output ports with handshaking control lines, RDY and

STROBE. Only port A can be programmed to be a bidirectional

port. This configuration provides a means for communicating

with a peripheral device or microprocessor system on a single

8-bit bus for both transmitting and receiving data. Handshaking

signals are provided to maintain proper bus access control.

Port A handshaking lines are used for input control and port B

handshaking lines are used for output; therefore port B must be

in the bit-programmable mode where handshaking is not used.

• Operates in Either I/O or Memory Space

Ordering Information

PKG.

NO.

PACKAGE TEMP. RANGE

10V

PDIP

Burn-In

SBDIP

Burn-In

-40 C to +85 C CDP1851CE CDP1851E E40.6

CDP1851CEX

-40 C to +85 C CDP1851CD

E40.6

D40.6

Ports A and B can be separately bit programmed so that each

individual line can be designated as an input or output line. The

handshaking lines may also be individually programmed as

input or output when port A is not in bidirectional mode.

CDP1851CDX CDP1851DX D40.6

The CDP1851 has a supply-voltage range of 4V to 10.5V, and

the CDP1851C has a range of 4V to 6.5V. Both types are sup-

plied in 40-lead dual-in-line plastic (E suffix) or hermetic

ceramic (D suffix) packages. The CDP1851C is also available

in chip form (H suffix).

CDP1851 Programming Modes

Pinout

CDP1851, CDP1851C

(2)

PORT A

HANDSHAKING

PINS

(2)

PORT B

HANDSHAKING

PINS

(PDIP, SBDIP)

TOP VIEW

(8)

PORT A

DATA PINS

(8)

PORT B

DATA PINS

CLOCK

40 V

MODE

Input

39 RD/WE

38 WR/RE

37 TPB

RA0

Accept Input

Data

READY, STROBE

Accept Input Data READY, STROBE

RA1

BUS0

BUS1

BUS2

BUS3

BUS4

36 A RDY

STROBE

34 A0

Output

Output Data

READY, STROBE

Input Handshaking

Output Data

READY, STROBE

33 A1

32 A2

31 A3

30 A4

29 A5

28 A6

27 A7

26 B7

25 B6

24 B5

23 B4

22 B3

21 B2

Bidirectional Transfer In-

(Port A Only) put/Output Data for Port A

Must be Previous- Output Handshaking

ly Set to Bit-Pro-

grammable Mode

for Port A

BUS5 10

BUS6 11

BUS7 12

CLEAR 13

A INT 14

B INT 15

B RDY 16

Bit-Program- Programmed In- Programmed Individ- Programmed Indi- Programmed Individ-

mable dividually as In- ually as Inputs or Out- vidually as Inputs ually as Inputs or Out-

puts or Outputs puts

or Outputs

puts

STROBE

B0 18

B1 19

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

File Number 1056.2

^{1-888-INTERSIL or 321-724-7143 | Intersil (and design) is a trademark of Intersil Americas}1^Inc.

12 3 4 5 6 7...13

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与CDP1851CH相关器件

型号	品牌	获取价格	描述	数据表
CDP1851D	ETC	获取价格	Telecommunication IC
CDP1851DX	INTERSIL	获取价格	CMOS Programmable I/O Interface
CDP1851E	INTERSIL	获取价格	CMOS Programmable I/O Interface
CDP1851EX	RENESAS	获取价格	CDP1851EX
CDP1852	INTERSIL	获取价格	Byte-Wide Input/Output Port
CDP1852/3	INTERSIL	获取价格	High-Reliability Byte-Wide Input/Output Port
CDP18523	INTERSIL	获取价格	High-Reliability Byte-Wide Input/Output Port
CDP1852C	INTERSIL	获取价格	Byte-Wide Input/Output Port
CDP1852C/3	INTERSIL	获取价格	High-Reliability Byte-Wide Input/Output Port
CDP1852CD	INTERSIL	获取价格	Byte-Wide Input/Output Port

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