ELECTRONICS
PG8952
89C51/89C52/89C55 Programmer - Intel Hex serial
DISTINCTIVE CHARACTERISTICS
• Erases, Programs & Verifies Atmel 40 pin micros
• 89C51/52 Devices use FLASH program memory
- Can be reprogrammed 1000 times per chip
- 10ms electronic erasure, vs. 30 minute UV
• Programmer interface is PC serial compatible
- 9600 Baud, 8 data, 2 stop bits, no parity
- Accepts standard Intel Hex files
- Programs on the fly - during serial download
• Stand-alone test switch
- Allows chip operating test without PC download
- Tests for blank chip without PC download
- Reads & Verifies chip data against last checksum
GENERAL DESCRIPTION
The PG8952 is a development programmer for the ATMEL
AT89C51 family, - Referred to as the 89C51. References
made here to the 89C51 apply equally to the 89C52/55.
The PG8952 allows testing, erasure, programming, verifi-
cation and security protection of 89C51 devices. The
programmer is fast, small and simple to use.
The Programmer may be connected to a PC or other host
by a serial cable.
The data to be downloaded to the
programmer is transmitted in Intel Hex format.
programmer will erase & program, verify, write protect and
security protect as it receives the file, according to the
settings on its Dip switches.
The PG8952 can be used stand-alone by inserting an
89C51 and pushing the Manual test switch, in this mode it
PG8952 LAYOUT
Dip Switch
Power
Supply
DB9 Serial
Connector
ELECTRONICS
Suite 201, 19-21 Berry Street, P O Box 1491,
North Sydney, NSW 2060, Australia
Reissue: 17 October 2008
• Green/Red Indicator LEDs
• Programs Security bits, if required
- Dipswitch selectable
• One Step program operation, as set by dipswitch
- Download starts Test/Erase/Program/Verify
• No special PC software required
• Programs 89C51, 89C52, 89C55, 89LV51,
89LV52, 89C55
• Fast operation - programs 4kbytes in 12 sec (typ)
• Powered by DC plug pack (supplied)
indicates Tested, Blank and Verified checksum conditions.
In normal use device programming consists of:
• Insert an 89C51
• Download intel hex file
• Watch LEDs
The speed of programming is limited by the speed of
download, and for a 4 kilobyte file - the capacity of the
The
89C51 - this will typically be 12 seconds. Shorter programs
will complete more quickly. The PC serial should be run at
9600 Baud, no parity, 8 data bits, 2 stop bits - do not using
other settings when downloading data.
The 89C51 should be inserted into the programmer with
pin 1 at the top left position of the socket.
Indication
LEDs
Test Switch
Internet: stevenm@zeta.org.au
PG8952
V1.01
ELECTRONICS
(Manual Test if desired)
(Causes programming)
(Indicates success or failure)
Pin 1 on
Device
Device
Socket
Data/Fax (2) 9925-0297
Tel (2) 9925-0325
1
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