AT89C2051 View Datasheet(PDF) - Unspecified
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AT89C2051 Datasheet PDF : 26 Pages
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User Manual V2.00 Evalu8r
Introduction
T he Evalu8r is a feature-packed
evaluation module which has been
specially designed to support a variety
of different single-chip microcontrollers.
Support is offered for for Atmel 8-pin,
20-pin and 40-pin AVR microcontrollers,
together with support for 20-pin and
40-pin 8051 microcontrollers. The
module supports a wealth of typical
microcontroller peripherals including
LED's, push buttons, sounder, A/D and
serial communications. There is also the
provision for two 8-bit ports to be
brought out via headers allowing the
user to develop off-board circuitry.
The Evalu8r module features an In-System
Programming (ISP) port which allows the
Atmel microcontrollers which support ISP to
be programmed in-situe in the socket. The
ISP port is designed to interface to any
Equinox serial programmer including the
'Micro-ISP' and 'Activ8r'. Even the new
Atmel AVR 8-pin microcontroller family
(AT90S2323/AT90S2343) is supported by
this module. It is also possible to place serial
EEPROM's in the 8-pin socket and then
communicate to these device from the
master microcontroller.
The 'Evalu8r' module is now supplied as
standard in both AVR and 8051
microcontroller systems. Many sample
application programs based on this module
are already in existence.
MODULE HIGHLIGHTS
• Supports Atmel 8, 20 and 40-pin
Microcontrollers
• Supports NEW Atmel 8-pin AVR
microcontrollers
• Supports 8-pin serial EEPROM’s
• Features In-System Reprogramming
(ISP) Port
• User configurable RESET Polarity to
support both 8051 and AVR
microcontrollers
• 8 x Light Emitting Diodes (LED’s)
• 5 Push Button Switches
• RS-232 Communications Driver
Circuitry
• Simple Analogue to Digital (A/D)
Converter using on-chip Comparator
• Two ports brought out to headers
allowing external circuitry to be
connected
• On-board power supply
• Pluggable Crystal
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