N25Q128 - 1.8 V
Description
The memory can be write protected by software using a mix of volatile and non-volatile
protection features, depending on the application needs. The protection granularity is of 64-
Kbyte (sector granularity) for volatile protections.
The N25Q128 has 64 one-time-programmable bytes (OTP bytes) that can be read and
programmed using two dedicated instructions, Read OTP (ROTP) and Program OTP
(POTP), respectively. These 64 bytes can be permanently locked by a particular Program
OTP (POTP) sequence. Once they have been locked, they become read-only and this state
cannot be reversed.
Many different N25Q128 configurations are available, please refer to the ordering scheme
page for the possibilities. Additional features are available as security options (The Security
features are described in a dedicated Application Note). Please contact your nearest
Numonyx Sales office for more information.
Figure 1.
Logic diagram
V
CC
DQ0
C
DQ1
S
W/V /DQ2
PP
HOLD/DQ3
V
SS
Logic_Diagram_x25x
Note:
Reset functionality is available in devices with a dedicated part number. See Section 16:
Ordering information.
Table 1.
Signal names
Signal
Description
I/O
C
Serial Clock
Input
I/O(1)
I/O(2)
Input
I/O(3)
I/O(3)
–
DQ0
Serial Data input
Serial Data output
Chip Select
DQ1
S
W/VPP/DQ2
HOLD/DQ3(4)
VCC
Write Protect/Enhanced Program supply voltage/additional data I/O
Hold (Reset function available upon customer request)/additional data I/O
Supply voltage
Ground
VSS
–
1. Provides dual and quad I/O for Extended SPI protocol instructions, dual I/O for Dual I/O SPI protocol instructions, and quad
I/O for Quad I/O SPI protocol instructions.
2. Provides dual and quad instruction input for Extended SPI protocol, dual instruction input for Dual I/O SPI protocol, and
quad instruction input for Quad I/O SPI protocol.
3. Provides quad I/O for Extended SPI protocol instructions, and quad I/O for Quad I/O SPI protocol instructions.
4. Reset functionality available with a dedicated part number. See Section 16: Ordering information.
13/185
MICRON [ MICRON TECHNOLOGY ]
