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HM628512BLRR-7SL from HIT

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HM628512BLRR-7SL

Manufacturer: HIT, HITACHI

4 M SRAM (512-kword x 8-bit)
Partnumber Manufacturer Quantity Availability
HM628512BLRR-7SL,HM628512BLRR7SL HIT, HITACHI 6600 In Stock

Description and Introduction

4 M SRAM (512-kword x 8-bit) The part **HM628512BLRR-7SL** is a **512K x 8-bit (4Mbit) CMOS SRAM** manufactured by **HIT (Hitachi)**.  

### Key Specifications:  
- **Organization**: 512K × 8-bit  
- **Density**: 4Mbit  
- **Technology**: CMOS  
- **Access Time**: **70ns** (as indicated by the "-7" suffix)  
- **Voltage Supply**: **5V ±10%**  
- **Package**: **32-pin SOP (Small Outline Package)**  
- **Operating Temperature Range**: Commercial (0°C to +70°C) or Industrial (-40°C to +85°C) (exact range depends on variant)  
- **Features**:  
  - Low power consumption  
  - Fully static operation (no refresh required)  
  - TTL-compatible inputs and outputs  

This SRAM is commonly used in embedded systems, industrial applications, and legacy computing devices.  

For exact datasheet details, refer to **Hitachi's official documentation**.

Application Scenarios & Design Considerations

4 M SRAM (512-kword x 8-bit)

Alternative Part Number

  • IS62C51216AL-70TLI --: 512K x 8 asynchronous SRAM with similar 70 ns access time and 5V operation, pin-compatible in many designs and widely available.
  • CY62256NLL-70ZXI --: 32K x 8 low-power SRAM with 70 ns speed; suitable when the design can use a smaller density or as a functional substitute in similar sockets.
  • AS6C4008-55TIN --: 512K x 8 low-power CMOS SRAM with 55 ns access time, direct functional replacement for 512K x 8 SRAMs and good availability.
  • AS6C4008-55PCN --: 512K x 8 low-power CMOS SRAM with 55 ns access time, pin-compatible with the HM628512 series and widely used as a drop-in replacement.
  • IS62WV5128BLL-55TLI --: 512K x 8 low-power SRAM in TSOP package with 55 ns speed grade, functionally equivalent and commonly substituted for Hitachi HM628512 devices.
  • CY62256NLL-70PXC --: 32K x 8 low-power SRAM with similar asynchronous interface; suitable when a smaller density is acceptable, from a well-established alternate SRAM family.

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