DSM2150F5V STMicroelectronics, DSM2150F5V Datasheet - Page 18

• Manufacturer Part Number: DSM2150F5V
• Description: DSM (Digital Signal Processor System Memory) for Analog Devices DSPs (3.3V Supply)
• Manufacturer: STMicroelectronics

DSM2150F5V
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10. DSP writes command sequence to initial segment to be erased, then writes the word XX30h to additional sectors to be erased.
11. The system may perform READ and Program cycles in non-erasing sectors, read the Flash ID or read the Sector Protect Status,
12. The Resume Sector Erase instruction sequence is valid only during the Suspend Sector Erase Mode.
13. The Unlock Bypass instructions required prior to the Unlock Bypass Program Instruction.
14. The Unlock Bypass Reset Flash instruction is required to return to reading memory data when the device is in Unlock Bypass Mode.
15. All bus cycles in an instruction sequence are WRITEs or READs to an even address (XXAAAh or XX554h), and only the low byte,
7. The DSP cannot invoke this instruction sequence while executing code from the same Flash memory as that for which the instruc-
8. The data is XX00h for an unprotected sector, and XX01h for a protected sector. In the fourth cycle, the Sector Select is active, and
9. Directing this command to any individual active Flash memory segment (FS0 - FS7) will invoke the bulk erase of all eight Flash
tion sequence is intended. The DSP must fetch, for example, the code from the DSP SRAM when reading the Flash memory Iden-
tifier or Sector Protection Status.
(A1,A0) = (1,0)
memory sectors. Likewise, directing command to any Secondary Flash sector (CSBOOT0-3) will invoke erase of all four sectors.
XX30h must be addressed to one of the other Flash memory segments (FS0-7 or CSBOOT0-3) for each additional segment (write
XX30h to any address within a desired sector). No more time than t
commands.
when in the Suspend Sector Erase Mode. The Suspend Sector Erase instruction sequence is valid only during a Sector Erase cycle.
D0-D7, is significant (upper byte on D8-D15 is ignored). A Flash memory Program bus cycle writes a word to an even address.
TIMEOUT
can elapse between subsequent additional sector erase