Isp (In-System Programming) - Dataman 448PRO2AP User Manual

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.
Direction of connect DATAMAN ISP programmer to target system:
During in-system programming you connect two electrical devices – ISP programmer and
target system. Unqualified connection can damage these devices.
Note: When you don't keep below directions and you damage programmer during in-system
programming, it is damage of programmer by unqualified manipulation and is out of warranty.
1. Turn off both devices – ISP programmer and target device.
2. Assign same GND potential for all devices, e.g. connect GND of all devices by wire.
3. Insert one connector of ISP cable to ISP programmer, turn on programmer and control
program.
4. In control program select target device and operation options.
5. Start action on target device (read, program).
6. After direction of control program, connect other ISP cable connector to target system and
turn on it.
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