User`s manual

Description of 844USB ISP connector

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, don’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.

• 844USB can supply 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