M25PE40 Datasheet, PDF (18/62 Pages) STMicroelectronics – 4 Mbit, low voltage, Page-Erasable Serial Flash memory with byte alterability, 50 MHz SPI bus, standard pinout

Memory organization
Figure 6. Block diagram
Reset
TSL or W
S
C
D
Q
Control Logic
High Voltage
Generator
I/O Shift Register
M25PE40
Address Register
and Counter
6FFFFh
256 byte
Data Buffer
Status
Register
7FFFFh
Top 256 pages can
be made read-only
by using the TSL pin⁽¹⁾
Whole memory array can
be made read-only
on a 64-Kbyte basis
through the Lock
Registers
00000h
000FFh
256 bytes (page size)
X Decoder
1. These features (in gray) are only available in the T7X process.
AI13782
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