P80C557E6 View Datasheet(PDF) - Philips Electronics

Part Name

Description

View to exact match

P80C557E6

Single-chip 8-bit microcontroller

Philips Electronics 

Philips Semiconductors

Single-chip 8-bit microcontroller

Product specification

P83C557E6/P80C557E6

One Machine Cycle

One Machine Cycle

XTAL1

INPUT

S1 S2 S3 S4 S5 S6 S1 S2 S3 S4 S5 S6

P1 P2 P1 P2 P1 P2 P1 P2 P1 P2 P1 P2 P1 P2 P1 P2 P1 P2 P1 P2 P1 P2 P1 P2

dotted lines

are valid when RD or

WR are active

only active

during a read

from external

data memory

only active

during a write

from external

data memory

ALE

PSEN

RD

WR

external

program

memory

fetch

Bus

Int.

(Port 0) in

Port 2

address

A0–A7

Int. address

in

A0–A7

Int. address

in

A0–A7

Int. address

in

A0–A7

address A8–A15

address A8–A15

address A8–A15

address A8–A15

read or

write of

external data

memory

Bus

Int.

(Port 0) in

address

A0–A7

Int. address

in

A0–A7

data output or data input

Port 2

address A8–A15

address A8–A15 or Port2 out

address

A0–A7

address A8–A15

PORT

OUTPUT

PORT

INPUT

SERIAL

PORT

CLOCK

old data

new data

sampling time of I/O port pins during input (including INT0 and INT1)

Figure 58. Instruction cycle timing

1999 Mar 02

Purchase of Philips I2C components conveys a license under the Philips’ I2C patent

to use the components in the I2C system provided the system conforms to the

I2C specifications defined by Philips. This specification can be ordered using the

code 9398 393 40011.

61

Share Link: