99 Washington Street
Melrose, MA 02176
Fax 781-665-0780
TestEquipmentDepot.com
User's Manual for
844USB
844USB programmer is driven by an easy-to-use control
program with pull-down menu, hot keys and on-line help.
Selecting of device is performed by its class, by manufacturer
or simply by typing a fragment of vendor name and/or part
number.
Standard device-related commands (read, blank check,
program, verify, erase) are boosted by some test functions
(insertion test, signature-byte check), and some special functions (autoincrement).
All known data formats are supported. Automatic file format
detection and conversion during load of file.
The rich-featured autoincrement function enables to assign
individual serial numbers to each programmed device - or
simply increments a serial number, or the function enables to
read serial numbers or any programmed device identification
signatures from a file.
The software also provides a many informations about
programmed device. As a special, the drawings of all available
packages are provided. The software provides also
explanation of chip labeling (the meaning of prefixes and
suffixes at the chips) for each supported chip.
Various socket converters are available to handle device in
PLCC, SOIC, SSOP, TSOP, TSSOP, TQFP, QFN (MLF) and
other packages.
Advanced design, including protection circuits, original brand
components and careful manufacturing allows us to provide a
three-year warranty on parts and labor for the 844USB
(limited 25,000-cycle warranty on ZIF socket).
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176
FAX 781.665.0780 - TestEquipmentDepot.com
844USB elements
40 pin ZIF socket
LED power/sleep
LED, which indicate work result
YES! button
USB connector for PC ↔ 844USB communication cable
Power supply connector
7 Connector for ISP
Power supply connector
+
Note: Due to low power consumption of 844USB in inactive
state, it doesn't require power switch. When the power LED
indicator glows with a low intensity the 844USB is in inactive
mode.
Connecting 844USB to PC
For 844USB order of connecting USB cable and power supply
to programmer is irrelevant.
Problems related to the 844USB PC
interconnection, and their removing
If you have any problems with 844USB PC
interconnection, see section Common notes please.
Manipulation with the programmed
device
After selection of desired device for your work, you can insert
into the open ZIF socket (the lever is up) and close socket (the
lever is down). The correct orientation of the programmed
device in ZIF socket is shown on the picture near ZIF socket
on the programmer's cover. The programmed device is
necessary to insert into the socket also to remove from the
socket when LED BUSY light off.
Warning: 844USB programmer hasn’t protection devices,
which protect the content of programmed device against critical
situations, for example power failures and PC failure
(interrupted cable...). Moreover, a device is usually destroyed
in the programming mode due to forced interruption of the
control program run (Reset or switching the computer off) due
to removing the connecting cable, or unplugging the
programmed device from the ZIF socket. Incorrectly placed
device in the ZIF socket can cause its damage or destruction.
In-system serial programming by
844USB
For general definition, recommendation and direction about
ISP see section Common notes / ISP please.
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176
FAX 781.665.0780 - TestEquipmentDepot.com
Description of 844USB ISP connector
6
8910
234
5
7
1
Front view at ISP connector of programmer.
Specification of ISP connector pins depends on the device,
which you want to program. You can find it in the control SW
for programmer (PG4UW), menu Device / Device Info (Ctrl+F1). Be aware, the ISP programming way of respective
device must be selected. It is indicated by (ISP) suffix after
name of selected device.
These specifications correspond with application notes
published of device manufacturers. Used application notes you
may find on
www.bkprecision.com, section application notes.
Note: Pin no. 1 is signed by triangle scratch on ISP cable
connectors.
844USB ISP cable
Warnings:
•When you use 844USB as ISP programmer, do n’t insert
device to ZIF socket.
•When you program devices in ZIF socket, don’t insert
ISP cable to ISP connector.
• Use only attached ISP cable. When you use other ISP
cable (other material, length…), programming may occur
unreliable.
•844USBcansupply programmed device only, but target
system cannot supply 844USB.
• 844USB apply programming voltage to target device and
checks his value (target system can modify programming
voltage). If the programming voltage is different as
expected, no action with target device will be executed.
Note: H/L/read 844USB driver
C1
H/L/read driver
in programmer
PU/PD driver
in programmer
R1
R2
pin of ISP
connector
Selftest and calibration
If you feel that your programmer does not react according to
your expectation, please run the programmer selftest using
Diagnostic POD, enclosed with the standard delivery package.
For optimal results with programmer we recommend you
undertake every 6 months, an extended test and to check the
calibration. See instructions for selftest in the Diagnostics
menu of PG4UW.
Technical specification
HARDWARE
Programmer
• two D/A convert ers for VCCP and VPP, controllable rise and
fall time
• VCCP range 0..7V/350mA
• VPP range 0..25V/200mA
• USB 2.0/1.1 compatible interface
• autocalibration
• selftest capability
ZIF socket, pindriver
• 40-pin DIL ZIF (Zero Insertion Force) socket accepts both
300/600 mil devices up to 40-pins
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176