NX25P40

Features:

• 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, Wide Temperature Range
Single 2.7 to 3.6V supply
4mA active current, 1A 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
• Software and Hardware Write Protection
Write-Protect all or portion of memory via software
Enable/Disable protection with WP pin
• 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


Pinout




Specifications

Symbol	Parameters	Conditions	Range	Unit
Vcc	Supply Voltage		0.6 to +4.0	V
VIO	Voltage Applied to Any Pin	Relative to Ground	0.6 to Vcc + 0.4	V
TSTG	Storage Temperature		65 to +150	°C
TLEAD	Lead Temperature		See Note 2	°C
VESD	Electrostatic Discharge Voltage	Human Body Model(3)	2000 to +2000	V

Description

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. The NX25P40 is 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 1A for power-down. All devices are offered in space-saving 8-pin SOIC type packages as shown below. Contact NexFlash for availability of alternate packages. 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/NX25P40 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) NX25P40 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 NX25P40 can be queried for manufacturer and device ID. Special customer ID (for copy authentication) and factory programming is available, contact Nex- Flash for more information.