
89S /AV R(90S )
S oc ket S tealer
Equinox Technologies UK Limited
UK Contact Details
3 Atlas House, St. Georges Square, Bolton BL1 2HB England
Tel: +44 (0) 1204 529000 Fax: +44 (0) 1204 535555
E-mail:
sales@equinox-tech.com
Web site:
www.equinox-tech.com
US/Canada Contact Numbers
Tel: 1-800-216-1777 Fax: 1-800-234-0941
3.2 LEDs
There are two LEDs on the Socket Stealer. The green LED indicates that that the programmer is active and an operation such
as read, verify, erase or program is being performed. The red LED indicates that the RESET of the microcontroller is active.
3.3 89S Device Locking
It is possible to lock 89S devices so they cannot be In-System programmed again due to a bug in the silicon. This can be
avoided by ensuring that your firmware does not write to the SCK pin of the 89S device within the first 700ms of execution,
possibly by including a large initial loop.
4. Technical Information
This section describes various aspects of the Socket Stealer that you should bear in mind when designing a target system or
when using the Socket Stealer with an existing design.
4.1 Current Consumption
The Socket Stealer draws approximately 0.5mA of current from the target circuit when the supply voltage Vcc is +5V.
4.2 Analogue Switch Resistance
Each analogue switch has a resistance when closed of 470
. This can have an effect on any hardware connected to pins
P1.4/PB4, P1.5/PB5, P1.6/PB6 and P1.7/PB7 on the target circuit due to the voltage drop across the switch.
5. Device support
Please note that although supported devices may have a range of possible supply voltages, the Socket Stealer has been
designed to operate only with a supply voltage of +5V.
5.1 Devices Inserted into the Socket Stealer
The Socket Stealer will accept the following Atmel 8051 devices providing the links are set correctly:
AT89S8252
AT89S53
AT89LS8252 (+5V Vcc only)
AT89LS53 (+5V Vcc only)
The Socket Stealer will accept the following Atmel AVR devices providing the links are set correctly:
AT90S4414
AT90S8515
Please refer to section 2.3 for information on the Socket Stealer links.