Posted on May 17, 2011 at 11:50We are using the PSD 4256G6V and are having a few problems.
The first problem is that when the SRAM standby voltage is above VCC, the chip goes into standby mode which means no memory may be accessed. Since our VCC voltage is 3.3V and the battery is 3V (or typically 3.3V when new) this causes major problems. I would have thought the SRAm would be valid so long as VCC is above 2V or the SRAM valid voltage level.
Problem2 is we cannot read back PSD memory data using our ST flashlink programmer. Upload only gives a .obj file.
Problem3 is we cannot program flash using the memory interface method (as opposed to JTAG). The erase sector command does not work at all, the erase all command takes many seconds to complete and returns before fully erased (shoudl wait and check polled status), and the flash program with poll or toggle does not work effectively. Someone here suggested that maybe the state machine is not kicked off.
Another minor issue is that with our Hitachi chip, the bytes are swapped by PSDsoft express.
Help with all these problems would be much appreciated since the help files appear to have no info about these problems.
