AT28HC64BF EEPROM: Pinout, Equivalent and Datasheet

The following figure is the diagram of AT28HC64BF pinout.

Pinout

The followings are AT28HC64BF Symbol, Footprint, and 3D Model.

PCB Symbol

PCB Footprint

3D Model

The AT28HC64BF is a high-performance electrically-erasable and programmable read-only memory (EEPROM). Its 64K of memory is organized as 8,192 words by 8 bits. Manufactured with Atmel's advanced nonvolatile CMOS technology, the device offers access times to 55 ns with power dissipation of just 220 mW. When the device is deselected, the CMOS standby current is less than 100 µA.

The AT28HC64BF is accessed like a Static RAM for the read or write cycle without the need for external components. The device contains a 64-byte page register to allow writing of up to 64 bytes simultaneously. During a write cycle, the addresses and 1 to 64 bytes of data are internally latched, freeing the address and data bus for other operations. Following the initiation of a write cycle, the device will automatically write the latched data using an internal control timer. Once the end of a write cycle has been detected, a new access for a read or write can begin. AT28HC64BF has additional features to ensure high quality and manufacturability. The device utilizes internal error correction for extended endurance and improved data retention characteristics. An optional software data protection mechanism is available to guard against inadvertent writes. The device also includes an extra 64 bytes of EEPROM for device identification or tracking.

This article provides you with a basic overview of the AT28HC64BF EEPROM, including its pin descriptions, features and specifications, etc., to help you quickly understand what AT28HC64BF is.

● Fast Read Access Time – 70 ns

● Automatic Page Write Operation

   ◆ Internal Address and Data Latches for 64 Bytes

● Fast Write Cycle Times

   ◆ Page Write Cycle Time: 2 ms Maximum (Standard)

   ◆ 1 to 64-byte Page Write Operation

● Low Power Dissipation

   ◆ 40 mA Active Current

   ◆ 100 µA CMOS Standby Current

● Hardware and Software Data Protection

● DATA Polling and Toggle Bit for End of Write Detection

● High Reliability CMOS Technology

   ◆ Endurance: 100,000 Cycles

   ◆ Data Retention: 10 Years

● Single 5 V ±10% Supply

● CMOS and TTL Compatible Inputs and Outputs

● JEDEC Approved Byte-wide Pinout

● Industrial Temperature Ranges

● Green (Pb/Halide-free) Packaging Only

The following is the Block Diagram of AT28HC64BF.

Block Diagram

The following diagrams show the AT28HC64BF package.

Top View

Side View

Bottom View

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