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M68AW256ML70ND6 from ST,ST Microelectronics

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M68AW256ML70ND6

Manufacturer: ST, STMicroelectronics

4 MBIT (256K X16) 3.0V ASYNCHRONOUS SRAM

Partnumber Manufacturer Quantity Availability
M68AW256ML70ND6 ST, STMicroelectronics 2923 In Stock

Description and Introduction

4 MBIT (256K X16) 3.0V ASYNCHRONOUS SRAM The **M68AW256ML70ND6** is a 256 Mbit (32M x 8) NOR Flash memory device manufactured by **STMicroelectronics**. Below are its key specifications, descriptions, and features:

### **Specifications:**
- **Memory Size:** 256 Mbit (32M x 8)  
- **Supply Voltage:** 2.7V to 3.6V  
- **Access Time:** 70 ns  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 56-lead TSOP (Thin Small Outline Package)  
- **Interface:** Parallel (Asynchronous)  
- **Sector Architecture:**  
  - Uniform 64 KB sectors  
  - Additional smaller boot sectors (top or bottom configuration)  
- **Endurance:** 100,000 write/erase cycles per sector  
- **Data Retention:** 20 years  

### **Descriptions:**
- The **M68AW256ML70ND6** is a high-performance NOR Flash memory designed for embedded applications requiring reliable, non-volatile storage.  
- It supports **asynchronous read and write operations**, making it suitable for systems with strict timing requirements.  
- Features **hardware and software data protection** mechanisms, including block locking and password protection.  

### **Features:**
- **Low Power Consumption:**  
  - Active read current: 25 mA (typical)  
  - Standby current: 20 µA (typical)  
- **Flexible Sector Erase:** Supports sector-by-sector or full-chip erase.  
- **Advanced Write Protection:**  
  - Sector lock/unlock via software commands  
  - Hardware write protection (WP# pin)  
- **Compatibility:** JEDEC-standard command set for easy integration.  
- **Reliability:** Built-in error correction and wear-leveling support.  

This device is commonly used in **automotive, industrial, and consumer electronics** applications requiring high-speed, non-volatile memory.

Application Scenarios & Design Considerations

4 MBIT (256K X16) 3.0V ASYNCHRONOUS SRAM

Alternative Part Number

  • CY7C1021CV33-70ZXC --: 256K x 16 asynchronous SRAM with 70 ns access time, same 44-pin TSOP package and 3.3V supply, direct functional equivalent to the M68AW256ML70ND6.
  • IS61WV25616EDBLL-10TLI --: 256K x 16 high-speed asynchronous SRAM in 44-pin TSOP, 3.3V, pin-compatible and widely available as a drop-in replacement for the ST SRAM.
  • AS7C3256A-10TCN --: 256K x 16 asynchronous SRAM, 44-pin TSOP, 3.3V, 10 ns speed grade, functionally compatible alternative from a vendor specializing in legacy SRAM replacements.
  • CY7C1021DV33-10ZSXI --: 256K x 16 asynchronous SRAM with similar 70 ns-class access time and 3.3 V supply, pin-compatible TSOP package, widely available and a common drop-in replacement for this SRAM class.
  • AS6C62256-55SIN --: 256K x 8 low-power CMOS SRAM in SOP/TSOP, 5 V tolerant I/O, suitable functional substitute when byte-wide organization is acceptable; Alliance specializes in legacy SRAM replacements.

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