PSD813F2-A-70J STMicroelectronics, PSD813F2-A-70J Datasheet - Page 36

• 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

Programming Flash memory
8.3
36/128
any location within the sector being erased to get the Toggle flag bit (DQ6) and the Error flag
bit (DQ5).
PSDsoft Express generates ANSI C code functions which implement these Data Toggling
algorithms.
Unlock Bypass (PSD833F2x, PSD834F2x, PSD853F2x,
PSD854F2x)
The Unlock Bypass instructions allow the system to program bytes to the Flash memories
faster than using the standard Program instruction. The Unlock Bypass mode is entered by
first initiating two Unlock cycles. This is followed by a third WRITE cycle containing the
Unlock Bypass code, 20h (as shown in
The Flash memory then enters the Unlock Bypass mode. A two-cycle Unlock Bypass
Program instruction is all that is required to program in this mode. The first cycle in this
instruction contains the Unlock Bypass Program code, A0h. The second cycle contains the
program address and data. Additional data is programmed in the same manner. These
instructions dispense with the initial two Unlock cycles required in the standard Program
instruction, resulting in faster total Flash memory programming.
During the Unlock Bypass mode, only the Unlock Bypass Program and Unlock Bypass
Reset Flash instructions are valid.
To exit the Unlock Bypass mode, the system must issue the two-cycle Unlock Bypass Reset
Flash instruction. The first cycle must contain the data 90h; the second cycle the data 00h.
Addresses are Don’t Care for both cycles. The Flash memory then returns to READ mode.
Doc ID 7833 Rev 7
Table
10).
PSD8XXFX