AT89S53 datasheet(8/26 Pages) ETC2

8 / 26 page

Evalu8r User Manual V2.00

Module Specifications

Evalu8r Technical Specification

Power Input ...........: a. +9 volts DC nominal (+25 volts Max)

................................. b. +9v DC unregulated, or +5v DC regulated.

Power Connectors .: a. Standard 2.5mm ROKA type-centre positive.

.................................

Accepts Equinox Power Supply

................................. b. Screw Terminals to accept external bench PSU.

.................................

Pin 1 +5v

.................................

Pin 2 +9v

.................................

Pin 3 0v.

Serial Port...............: 3-wire asynchronous Communications interface, TxD, RxD, GND (RS-232

................................. compatible).

Serial Connector ....: 9 way female D-type connector, PC compatible via. 1:1 cable

................................. Pin 2 - TxD Output from Evalu8r

................................. Pin 3 - RxD Input to Evalu8r

................................. Pin 5 - GND Signal Ground connection

A/D Convertor........: Simple current source and comparator technique

................................. GND Signal Ground

................................. REF

Voltage ramp from 65uA into

.................................

100nF approx.

................................. AIN

Input to Evalu8r. Max range 0v to

.................................

+5v (clamped)

.................................

Noise filter built-in 10K/100nF approx.

Status Indication....: Power-ON & PROG LED’s.

Sounder ..................: PIEZO type

Device profiles .......: 8, 20 and 40-pin devices are supported. There is room to fit either a 20-pin or a

................................. 40-pin ZIF socket if required.

ISP Compatibility ...: Equinox standard 10-way Header

Other I/O ................: 5 switches and 8 LED’s on 20/40 pin microcontroller port pins.

AT89S53 Datasheet(PDF) 8 Page - List of Unclassifed Manufacturers