m58bw32f STMicroelectronics, m58bw32f Datasheet - Page 13

• Manufacturer Part Number: m58bw32f
• Description: 16 Or 32 Mbit X32, Boot Block, Burst 3.3v Supply Flash Memories
• Manufacturer: STMicroelectronics

M58BW16F, M58BW32F
1.1
Block protection
The M58BWxxF features four different levels of block protection.
After a device reset the first two kinds of block protection (WP, RP) can be combined to give
a flexible block protection. All blocks are protected at power-up.
Write Protect pin, WP, - When WP is Low, V
configured in the Block Protection Configuration Register is activated. The Block
Protection Configuration Register is volatile. Any combination of blocks is possible. Any
attempt to program or erase a protected block will return an error in the Status Register
(see
Reset/Power-down pin, RP, - If the device is held in reset mode (RP at V
Program or Erase operation can be performed on any block.
Program/Erase Enable, PEN, - The Program/Erase Enable input, PEN, protects all
blocks by preventing Program and Erase operations from modifying the data.
Prior to issuing a Program or Erase command, the Program/Erase Enable must be set
to High (V
error is generated in the Status Register.
Permanent protection against modify operations - specific OTP-like blocks can be
permanently protected against modify operations (Program/Erase):
–
–
This protection is user-enabled. Details of how this protection is activated are provided
in a dedicated application note.
in the M58BW32F, a unique 128-Kbit parameter block – block 1 (01000h-01FFFh)
for bottom devices or block 72 (FE000h-FEFFFh) for top devices
in the M58BW16F, two 64-Kbit parameter blocks – blocks 2 and 3 (01000h-
01FFFh) for bottom devices or blocks 36 and 35 (7E000h-7EFFFh) for top devices
Table 13: Status Register
IH
). If it is Low (V
IL
), the Program or Erase operation is not accepted and an
bits).
IL
, the protection status that has been
IL
Description
), no
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