Memory organization
N25Q128 - 1.8 V
8
Memory organization
The memory is organized as:
16,777,216 bytes (8 bits each)
256 sectors (64 Kbytes each)
In Bottom and Top versions: 8 bottom (top) 64 Kbytes boot sectors with 16 subsectors
(4 Kbytes) and 248 standard 64 KB sectors
65,536 pages (256 bytes each)
64 OTP bytes located outside the main memory array
Each page can be individually programmed (bits are programmed from 1 to 0). The device is
Sector or Bulk Erasable (bits are erased from 0 to 1) but not Page Erasable, Subsector
Erase is allowed on the 8 boot sectors (for devices with bottom or top architecture).
Figure 9.
Block diagram
HOLD
High Voltage
Generator
W/V
Control Logic
PP
S
64 OTP bytes
C
DQ0
DQ1
DQ2
DQ3
I/O Shift Register
Status
Register
Address Register
and Counter
256 Byte
Data Buffer
FFFFFFh
00000h
000FFh
256 bytes (page size)
X Decoder
AI13722a
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