Dataman 448PRO2AP-AU, User Manual, Page: 153 / 160

Common notes
153
If the result of operations performed is OK, PG4UWCMD application will return ExitCode (or
ErrorLevel) value 0.
If there are some errors (can not load file or save to project file), PG4UWCMD application will
return ExitCode value equal or greater than 1.
Note: When using the above commands, user must be sure the PG4UW is not performing any
device operation, for example device programming. If the PG4UW is busy, it will refuse the
commands and returns error status (ExitCode equal or greater than value 1).
Hardware
Warning:
Class A ITE notice
Devices described at this manual are class A products. In domestic
environment this products may cause radio interference in which case the
user may be required to take adequate measures.
ISP (In-System Programming)
Definition
In-system programming allows programming and reprogramming of device positioned inside
the end system. Using a simple interface, the ISP programmer communicates serially with the
device, reprogramming nonvolatile memories on the chip. In-system programming eliminates
the physical removal of chips from the system. This will save time and money, both during
development in the lab, and when updating the software or parameters in the field.
Target device is the device (microcontroller, PLD, etc…), which is to be in-system
programmed.
Target system is the physical Printed Circuit Board (PCB), which contains the device to be in-
system programmed.
ISP programmer is programmer, which has in-system programming capability (for example
DATAMAN 448PRO2AP, DATAMAN 48PRO2AP, DATAMAN 48PRO2…).
General rules for in-system programming
We recommended respect following rules to avoid damage PC, ISP programmer, and target
device or target system:
 Ensure common earth point for target system, ISP programmer and PC.
 For laptop or other PC that is not connected to common earth point: make hard - wired
connection from laptop to common earth point (for example use VGA port connector).
 Any devices connected to target system must be connected to common earth point too.