IC EEPROM 64K PARALLEL 28SOIC The AT28HC64B is a high-performance electrically-erasable and programmable readonly memory (EEPROM). Its 64K of memory is organized as 8,192 words by 8 bits.
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Feb 8, 2022
Miriam Frances
What Is EEPROM?
The AT28HC64B is a high-performance electrically-erasable and programmable readonly memory (EEPROM). Its 64K of memory is organized as 8,192 words by 8 bits. Manufactured with advanced nonvolatile CMOS technology, the device offers access times to 55 ns with power dissipation of just 220 mW. Furthermore, Huge range of Semiconductors, Capacitors, Resistors and IcS in stock. Welcome RFQ.
AT28HC64B-90SU
| Quantity | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $7.09454 | $7.09 |
| 10+ | $6.69297 | $66.93 |
| 100+ | $6.31412 | $631.41 |
| 500+ | $5.95672 | $2978.36 |
| 1000+ | $5.61954 | $5619.54 |
The following figure is the diagram of AT28HC64B pinout.
Pinout
The followings are AT28HC64B Symbol, Footprint, and 3D Model.
PCB Symbol
PCB Footprint
3D Model
The AT28HC64B is a high-performance electrically-erasable and programmable readonly memory (EEPROM). Its 64K of memory is organized as 8,192 words by 8 bits. Manufactured with 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 AT28HC64B 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.
This article provides you with a basic overview of the AT28HC64B High-speed Parallel EEPROM, including its pin descriptions, features and specifications, etc., to help you quickly understand what AT28HC64B 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: 10 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 Option Only
Microchip Technology AT28HC64B-90SU technical specifications, attributes, parameters and parts with similar specifications to Microchip Technology AT28HC64B-90SU.
Microchip Technology AT28HC64B-90SU technical specifications, attributes, parameters and parts with similar specifications to Microchip Technology AT28HC64B-90SU.
| Product Attribute | Attribute Value | |
|---|---|---|
| Factory Lead Time | 14 Weeks | |
| Contact Plating | Tin | |
| Mount | Surface Mount | |
| Mounting Type | Surface Mount | |
| Package / Case | 28-SOIC (0.295, 7.50mm Width) | |
| Number of Pins | 28Pins | |
| Memory Types | Non-Volatile | |
| Operating Temperature | -40°C~85°C TC | |
| Packaging | Tube | |
| Published | 1997 | |
| JESD-609 Code | e3 | |
| Pbfree Code | yes | |
| Part Status | Active | |
| Moisture Sensitivity Level (MSL) | 3 (168 Hours) | |
| Number of Terminations | 28Terminations | |
| Voltage - Supply | 4.5V~5.5V | |
| Terminal Position | DUAL |
| Product Attribute | Attribute Value | |
|---|---|---|
| Peak Reflow Temperature (Cel) | 250 | |
| Number of Functions | 1Function | |
| Supply Voltage | 5V | |
| Terminal Pitch | 1.27mm | |
| Frequency | 90GHz | |
| Time@Peak Reflow Temperature-Max (s) | 40 | |
| Base Part Number | AT28HC64 | |
| Qualification Status | Not Qualified | |
| Operating Supply Voltage | 5V | |
| Power Supplies | 5V | |
| Interface | Parallel, SPI | |
| Memory Size | 64Kb 8K x 8 | |
| Nominal Supply Current | 40mA | |
| Operating Mode | ASYNCHRONOUS | |
| Access Time | 90ns | |
| Memory Format | EEPROM | |
| Memory Interface | Parallel |
| Product Attribute | Attribute Value | |
|---|---|---|
| Organization | 8KX8 | |
| Memory Width | 8 | |
| Write Cycle Time - Word, Page | 10ms | |
| Density | 64 kb | |
| Standby Current-Max | 0.0001A | |
| Programming Voltage | 5V | |
| Endurance | 100000 Write/Erase Cycles | |
| Write Cycle Time-Max (tWC) | 10ms | |
| Data Retention Time-Min | 10 | |
| Data Polling | YES | |
| Toggle Bit | YES | |
| Page Size | 64words | |
| Length | 17.9mm | |
| Height Seated (Max) | 2.65mm | |
| Width | 7.5mm | |
| RoHS Status | ROHS3 Compliant | |
| Lead Free | Lead Free |
The following is the Block Diagram of AT28HC64B.
Block Diagram
| Model number | Manufacturer | Description |
| AT28HC64B-90JI | Atmel Corporation | EEPROM, 8KX8, 90ns, Parallel, CMOS, PQCC32, PLASTIC, MS-016AE, LCC-32 |
| AT28HC64B-90SI | Atmel Corporation | EEPROM, 8KX8, 90ns, Parallel, CMOS, PDSO28, 0.300 INCH, PLASTIC, MS-013, SOIC-28 |
| X28HC64JM-90 | Xicor Inc | EEPROM, 8KX8, 90ns, Parallel, CMOS, PQCC32, PLASTIC, LCC-32 |
| AT28HC64-90JIT/R | Atmel Corporation | EEPROM, 8KX8, 90ns, Parallel, CMOS, PQCC32, PLASTIC, LCC-32 |
| AT28HC64B-90SIT/R | Atmel Corporation | EEPROM, 8KX8, 90ns, Parallel, CMOS, PDSO28, 0.300 INCH, PLASTIC, SOIC-28 |
| AT28HC64B-90SL | Atmel Corporation | EEPROM, 8KX8, 90ns, Parallel, CMOS, PDSO28, 0.300 INCH, PLASTIC, MS-013, SOIC-28 |
| X28HC64J-90C7871 | Intersil Corporation | 8KX8 EEPROM 5V, 90ns, PQCC32, PLASTIC, LCC-32 |
| X28HC64J-90 | Xicor Inc | EEPROM, 8KX8, 90ns, Parallel, CMOS, PQCC32, PLASTIC, LCC-32 |
| AT28HC64B-90DC | Atmel Corporation | EEPROM, 8KX8, 90ns, Parallel, CMOS, CDIP28, 0.600 INCH, CERDIP-28 |
| X28HC64JI-90T3 | Xicor Inc | EEPROM, 8KX8, 90ns, Parallel, CMOS, PQCC32, PLASTIC, LCC-32 |
The following diagrams show the AT28HC64B package.
Top View
Side View
End View
Microchip Technology Inc. is a leading provider of microcontroller and analog semiconductors, providing low-risk product development, lower total system cost and faster time to market for thousands of diverse customer applications worldwide. Headquartered in Chandler, Arizona, Microchip offers outstanding technical support along with dependable delivery and quality.
Download datasheets and manufacturer documentation for Microchip Technology AT28HC64B-90SU.
Download datasheets and manufacturer documentation for AT28HC64B-90SU
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