PSD813F2-A-70J STMicroelectronics, PSD813F2-A-70J Datasheet - Page 40

• Manufacturer Part Number: PSD813F2-A-70J
• Manufacturer: STMicroelectronics

Specifications of PSD813F2-A-70J

• Operating Temperature (max): 70C
• Operating Temperature (min): 0C
• Operating Temperature Classification: Commercial
• Package Type: PLCC
• Mounting: Surface Mount
• Pin Count: 52
• Lead Free Status / RoHS Status: Compliant

Specific features
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Specific features
Flash Memory Sector Protect
Each primary and secondary Flash memory sector can be separately protected against
Program and Erase cycles. Sector Protection provides additional data security because it
disables all program or erase cycles. This mode can be activated through the JTAG port or a
device programmer.
Sector protection can be selected for each sector using the PSDsoft Express Configuration
program. This automatically protects selected sectors when the device is programmed
through the JTAG port or a device programmer. Flash memory sectors can be unprotected
to allow updating of their contents using the JTAG port or a device programmer. The MCU
can read (but cannot change) the sector protection bits.
Any attempt to program or erase a protected Flash memory sector is ignored by the device.
The Verify operation results in a READ of the protected data. This allows a guarantee of the
retention of the Protection status.
The sector protection status can be read by the MCU through the Flash memory protection
and PSD/EE protection registers (in the CSIOP block). See
Reset Flash
The Reset Flash instruction consists of one WRITE cycle (see
optionally preceded by the standard two WRITE decoding cycles (writing AAh to 555h and
55h to AAAh). It must be executed after:
●
●
On the PSD813F2/3/4/5, the Reset Flash instruction puts the Flash memory back into
normal READ mode. It may take the Flash memory up to a few milliseconds to complete the
Reset cycle. The Reset Flash instruction is ignored when it is issued during a Program or
Bulk Erase cycle of the Flash memory. The Reset Flash instruction aborts any on-going
Sector Erase cycle, and returns the Flash memory to the normal READ mode within a few
milliseconds.
On the PSD83xF2 or PSD85xF2, the Reset Flash instruction puts the Flash memory back
into normal READ mode. If an Error condition has occurred (and the device has set the
Error flag bit (DQ5) to '1') the Flash memory is put back into normal READ mode within 25μs
of the Reset Flash instruction having been issued. The Reset Flash instruction is ignored
when it is issued during a Program or Bulk Erase cycle of the Flash memory. The Reset
Flash instruction aborts any on-going Sector Erase cycle, and returns the Flash memory to
the normal READ mode within 25μs.
Reading the Flash Protection Status or Flash ID
An Error condition has occurred (and the device has set the Error flag bit (DQ5) to '1')
during a Flash memory program or erase cycle.
Doc ID 7833 Rev 7
Table 12
Table
10). It can also be
and
Table
13.
PSD8XXFX