M35B32 datasheet(20/44 Pages) STMICROELECTRONICS

Part #	M35B32

Description	32 Kbit, 256-byte page, fast program EEPROM memory accessed by SPI bus interface

PDF	44 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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20 / 44 page

Instructions

M35B32

20/44

DocID18391 Rev 4

6.4.3

BPi bits

BPi bits define the size of the Event sector = N pages (one page = 256 bytes), where N is

the binary value of (BP3,BP2,BP1,BP0) (0 < N < 15).

BPi bits also define the size of the write-protected area.

Note:

The maximum size of the write-protected area is 15 pages (this means that the top page

cannot be write-protected).

When W=0, the BPi bits cannot be read and the Status Register is read as [0, 0, 0, 0, 0, 0,

WEL, WIP].

Figure 10. Read Status Register (RDSR) instruction sequence and data-out sequence

0123456

789

BPi 0000 0001 0010 0011 0100 0101 0110 0111 1000 1001 1010 1011 1100 1101 1110 1111

3456789 10 11 12 13 14 15

Instruction

AI02031E

6543210

Status Register Out

High Impedance

MSB

6543210

Status Register Out

MSB

M35B32 Datasheet(PDF) 20 Page - STMicroelectronics