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NX25P10

1M-BIT, 2M-BIT AND 4M-BIT Serial Flash Memory with 40MHz SPI

Unspecified 

1M / 2M / 4M-BIT SERIAL FLASH MEMORY with 40MHz SPI

NX25P10, NX25P20 AND NX25P40

FEATURES

GENERAL DESCRIPTION

• 1M / 2M / 4M-bit Serial Flash Memories

• Family of Serial Flash Memories

– NX25P10: 1M-bit / 128K-byte (131,072 ) 512 pages

– NX25P20: 2M-bit / 256K-byte (262,144 ) 1024 pages

– NX25P40: 4M-bit / 512K-byte (524,288 ) 2048 pages

– 256-bytes per programmable page

– Compatible migration path to 8M/16M/32M-bit

• 4-pin SPI Serial Interface

– Clock, Chip Select, Data In, Data Out

– Easily interfaces to popular microcontrollers

– Compatible with SPI Modes 0 and 3

– Optional Hold function for SPI flexibility

• Low Power Consumption,WideTemperature Range

– Single 2.7 to 3.6V supply

– 4mA active current, 1µA Power-down (typ)

– -40° to +85°C operating range

• Fast and Flexible Serial Data Access

– Clock operation to 40MHz Fast Read, 33MHz

Standard Read

– Byte-addressable Read and Program

– Auto-increment Read capability

– Manufacturer and Device ID

• Programming Features

– Page program up to 256 bytes <2ms

– Sector Erase (64K-byte) 2 seconds

– Chip erase: 3 seconds (25P10/20),

5 seconds (25P40)

– 100,000 erase/write cycles

– Twenty year data retention

The NX25P10 (1M-bit), NX25P20 (2M-bit) and NX25P40

(4M-bit) Serial Flash memories provide a storage solution

for systems with limited space, pins and power. They are

ideal for code download applications as well as storing

voice, text and data. The devices operate on a single 2.7V

to 3.6V power supply with current consumption as low as

4mA active and 1µA for power-down. All devices are offered

in space-saving 8-pin SOIC type packages as shown

below. Contact NexFlash for availability of alternate pack-

ages. As part of a family of Serial Flash products,

NexFlash also provides a compatible migration path to 8M/

16M/32M-bit densities.

The NX25P10/20/40 array is organized into 512/1024/2048

programmable pages of 256-bytes each. A single byte or,

up to 256 bytes, can be programmed at a time using the

Page Program instruction. Pages are grouped into 2/4/8

erasable sectors of 256 pages (64K-byte) each as shown in

figure 1. Both Sector Erase and Bulk (full chip) Erase

instructions are supported.

The Serial Peripheral Interface (SPI) consists of four pins

(Serial Clock, Chip Select, Serial Data In and Serial Data

Out) that support high speed serial data transfers up to

40MHz. A Hold pin, Write Protect pin and programmable

write protect features provide further control flexibility.

Additionally, the device can be queried for manufacturer

and device ID. Special customer ID (for copy authentica-

tion) and factory programming is available, contact Nex-

Flash for more information.

• Software and Hardware Write Protection

– Write-Protect all or portion of memory via software

– Enable/Disable protection with WP pin

8-Pin SOIC 150-mil

(Package Code N)

• Space Saving Package

– Tiny 8-pin SOIC

• Ideal for systems with limited pins, space, and power

– ASIC and Controller-based serial code-download

– Microcontroller systems storing data, text or voice

– Battery-operated and portable products

4

NexFlash Technologies, Inc.

PRELIMINARY MKP-0009 Rev 6 NXSF040I-0405

04/04/05 ©

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