How do I Clone an AT89LP51RD2
Posted: 21 May 2025 17:05
by Ryan@loreal
We are wanting to clone an AT89LP51RD2chip set and we purchased a dataman-48pro2 and some blank chips. But I'm having trouble reading the chip a we want to clone. When I try to read, I get a read failure. Read protected device. Does that mean I can't load the buffer or is there something I need to do differently?
Re: How do I Clone an AT89LP51RD2
Posted: 22 May 2025 09:26
by Dataman (Neil Parker)
Hello Ryan@loreal,
Based on the information we provide in the "Device info" section of our software for this device it is only possible to remove the protection by fully erasing the device:
General Info:
Code memory array is located in buffer from 0h to FFFFh.
Work with 'User Signature Array' is conditional programming fuse 'User Signature Programming' in 'User Configuration Fuses, Lock Bits'. 'User Configuration Fuses' are reprogrammable by using Program operation. Lock bits can only be erased (set to FFh) by Erase operation.
Operation 'Chip erase, according "User Configuration Fuses"', will erase all memories according to the setting of fuses 'User Signature Programming'.
Operation 'Chip erase, complete', will erase all memories and setting all fuses to FFh state, unconditionally.
If 'User Signature Programming' fuse is set to 'FF' (disabled), then 'Chip erase, according "User Configuration Fuses"' will erase only 'User Signature Array' in address range 0h~FFh.
The address range 180h~1FFh of 'User Signature Programming' is OTP memory!
In case of unreliable work of this device using universal adapter/module, please connect bypass capacitor (ceramic multilayer, that meet the EIA X7R or Z5U specification value 22nF-100nF) between GND(VSS) and VCC(VDD) pins of this device.
Dataman will not provide any help or support with circumventing the manufacturers security features. Thank you for understanding.