IS80C51 datasheet(5/43 Pages) ISSI

부품명	IS80C51

상세설명	CMOS SINGLE CHIP 8-BIT MICROCONTROLLER

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제조업체	ISSI [Integrated Silicon Solution, Inc]

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IS80C51

IS80C31

Integrated Silicon Solution, Inc. — 1-800-379-4774

5

MC003-1D

11/19/98

ISSI®

Table 1. Detailed Pin Description

Symbol

PDIP

PLCC

PQFP

I/O

Name and Function

ALE

30

33

27

I/O

Address Latch Enable: Output pulse for latching the low byte

of the address during an address to the external memory. In

normal operation, ALE is emitted at a constant rate of 1/6 the

oscillator frequency, and can be used for external timing or

clocking. Note that one ALE pulse is skipped during each

access to external data memory.

EA

31

35

29

I

External Access enable:

EA must be externally held low to

enable the device to fetch code from external program memory

locations 0000H to FFFFH. If

EA is held high, the device

executes from internal program memory unless the program

counter contains an address greater than 0FFFH.

P0.0-P0.7

39-32

43-36

37-30

I/O

Port 0: Port 0 is an 8-bit open-drain, bidirectional I/O port. Port

0 pins that have 1s written to them float and can be used as high-

impedance inputs. Port 0 is also the multiplexed low-order

address and data bus during accesses to external program and

data memory. In this application, it uses strong internal pullups

when emitting 1s.

P1.0-P1.7

1-8

2-9

40-44

I/O

Port 1: Port 1 is an 8-bit bidirectional I/O port with internal

1-3

pullups. Port 1 pins that have 1s written to them are pulled high

by the internal pullups and can be used as inputs. As inputs,

Port 1 pins that are externally pulled low will source current

because of the internal pullups. (See DC Characteristics: IIL).

The Port 1 output buffers can sink/source four TTL inputs.

Port 1 also receives the low-order address byte during ROM

verification.

P2.0-P2.7

21-28

24-31

18-25

I/O

Port 2: Port 2 is an 8-bit bidirectional I/O port with internal

pullups. Port 2 pins that have 1s written to them are pulled high

by the internal pullups and can be used as inputs. As inputs,

Port 2 pins that are externally pulled low will source current

because of the internal pullups. (See DC Characteristics: IIL).

Port 2 emits the high order address byte during fetches from

external program memory and during accesses to external data

memory that used 16-bit addresses (MOVX @ DPTR). In this

application, Port 2 uses strong internal pullups when emitting

1s. During accesses to external data memory that use 8-bit

addresses (MOVX @ Ri [i = 0, 1]), Port 2 emits the contents of

the P2 Special Function Register.

Port 2 also receives the high-order bits and some control

signals during ROM verification.

유사한 부품 번호 - IS80C51

제조업체	부품명	데이터시트	상세설명
Integrated Silicon Solu...	IS80C52	382Kb / 48P	CMOS SINGLE CHIP LOW VOLTAGE 8-BIT MICROCONTROLLER
	IS80C52-12PL	382Kb / 48P	CMOS SINGLE CHIP LOW VOLTAGE 8-BIT MICROCONTROLLER
	IS80C52-12PLI	382Kb / 48P	CMOS SINGLE CHIP LOW VOLTAGE 8-BIT MICROCONTROLLER
	IS80C52-12PQ	382Kb / 48P	CMOS SINGLE CHIP LOW VOLTAGE 8-BIT MICROCONTROLLER
	IS80C52-12PQI	382Kb / 48P	CMOS SINGLE CHIP LOW VOLTAGE 8-BIT MICROCONTROLLER

More results

유사한 설명 - IS80C51

제조업체	부품명	데이터시트	상세설명
Infineon Technologies A...	SAB80C515	668Kb / 56P	8-Bit CMOS Single-Chip Microcontroller 02.96
Infineon Technologies A...	SAB80C517	1Mb / 61P	8-Bit CMOS Single-Chip Microcontroller 04.95
Samsung semiconductor	S3F8647	1Mb / 399P	8-bit single-chip CMOS microcontroller
Integrated Circuit Solu...	IC80C51	247Kb / 44P	CMOS SINGLE CHIP 8-BIT MICROCONTROLLER
NXP Semiconductors	83C654	258Kb / 24P	CMOS single-chip 8-bit microcontroller 1998 Jan 06
Siemens Semiconductor G...	SAB80C517A	2Mb / 137P	8-Bit CMOS Single-Chip Microcontroller
Siemens Semiconductor G...	SAB80C517	3Mb / 323P	8-Bit CMOS Single-Chip Microcontroller
Integrated Circuit Solu...	IC80C32	274Kb / 48P	CMOS SINGLE CHIP 8-BIT MICROCONTROLLER
Integral Corp.	IN80C32N	117Kb / 2P	CMOS SINGLE-CHIP 8-BIT MICROCONTROLLER
Infineon Technologies A...	SAB80C515A	899Kb / 57P	8-Bit CMOS Single-Chip Microcontroller 08.95
Infineon Technologies A...	SAB80C517A	1Mb / 77P	8-Bit CMOS Single-Chip Microcontroller 1994-05-01

More results

IS80C51 데이터시트(PDF) 5 Page - Integrated Silicon Solution, Inc

IS80C51 데이터시트(HTML) 5 Page - Integrated Silicon Solution, Inc

유사한 부품 번호 - IS80C51

유사한 설명 - IS80C51

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