n25q256 Numonyx, n25q256 Datasheet - Page 14

• Manufacturer Part Number: n25q256
• Description: 256-mbit 3 V, Multiple I/o, 4-kbyte Subsector Erase, Xip Enabled, Serial Flash Memory With 108 Mhz Spi Bus Interface
• Manufacturer: Numonyx

Description
Note:
Table 1.
1. Provides dual and quad I/O for Extended SPI protocol instructions, dual I/O for Dual I/O SPI protocol instructions, and
2. Provides dual and quad instruction input for Extended SPI protocol, dual instruction input for Dual I/O SPI protocol, and
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
14/186
C
DQ0
DQ1
S
W/VPP/DQ2
HOLD/DQ3
V
V
CC
SS
quad I/O for Quad I/O SPI protocol instructions.
quad instruction input for Quad I/O SPI protocol.
Signal
(4)
The N25Q256 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 N25Q256 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.
Reset functionality is available in devices with a dedicated part number. See
Ordering
Signal names
Serial Clock
Serial Data input
Serial Data output
Chip Select
Write Protect/Enhanced Program supply voltage/additional data I/O
Hold (Reset function available upon customer request)/additional data I/O
Supply voltage
Ground
information.
Logic diagram
W/V
HOLD/DQ3
PP
/DQ2
DQ0
C
S
Description
Micron Technology, Inc., reserves the right to change products or specifications without notice.
Section 16: Ordering
V CC
V SS
Logic_Diagram_x25x
DQ1
information.
©2010 Micron Technology, Inc. All rights reserved.
N25Q256 - 3 V
Section 16:
Input
I/O
I/O
Input
I/O
I/O
–
–
I/O
(1)
(2)
(3)
(3)