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STM32F030CCT6 ST-Link problem

Question asked by jespersen.thomas.001 on Sep 16, 2015
Latest reply on Sep 16, 2015 by jespersen.thomas.001

I have just upgraded one of our boards from using the STM32F030C8T6 to the more or less pin-compatible STM32F030CCT6.
The only change that had to be made was to supply the one extra power supply rail to pin 35 and 36.

Though when scanning the JTAG chain with the ST-Link software it doesn't detect the right chip. This is the output log:
00:01:03 : ST-LINK SN : 53FF71065078485750200387
00:01:03 : ST-LINK Firmware version : V2J23S0
00:01:03 : Connected via SWD.
00:01:03 : SWD Frequency = 480 KHz.
00:01:03 : Connection mode : Normal.
00:01:03 : Device ID:0x442 
00:01:03 : Device flash Size : 256KBytes
00:01:03 : Device family :STM32F091xB-xC/F098xC

Furthermore we can't get our firmware to work on this device, which seems to go constantly into hardfault.

Any recommendations are appreciated.

Best regards
Thomas Jespersen