
Manufacturer Part #
25LC640AT-I/SN
25LC640A Series 64 Kbit (8K x 8) 5.5 V SMT SPI Bus Serial EEPROM - SOIC-8
Microchip 25LC640AT-I/SN - Product Specification
Shipping Information:
ECCN:
PCN Information:
*** Update for PCN 113340 ***Description of Change: Qualification of CuPdAu as a new wire material and QMI519 as a new die attach material for selected 24AA01, 24AA01H, 24AA02, 24AA02H, 24AA04, 24AA04H, 24AA08, 24AA08H, 24AA16, 24AA16H, 24FC01, 24FC02, 24FC04, 24FC04H, 24FC08, 24FC16, 24FC16H, 24LC01B, 24LC01BH, 24LC02B, 24LC02BH, 24LC04B, 24LC04BH, 24LC08B, 24LC08BH, 24LC16B, 24LC16BH, 25AA320A, 25AA640A, 25CS320, 25CS640, 25LC320A, 25LC640A, AT24C01D, AT24C02D, AT24C04D, AT24C08C, AT24C08D, AT24C16C, AT24C16D and AT24C32E device families available in 8L SOIC (.150in) package.Reason for Change: To improve manufacturability CuPdAu as a new wire material and QMI519 as a new die attach materialRevision History: May 30, 2025: Issued final notificationJune 06, 2025: Re-issued final notification. Updated to Qualification Report Summary in Qual Report attachment.
Description of Change: Qualification of CuPdAu as a new wire material and QMI519 as a new die attach material for selected 24AA01, 24AA01H, 24AA02, 24AA02H, 24AA04, 24AA04H, 24AA08, 24AA08H, 24AA16, 24AA16H, 24FC01, 24FC02, 24FC04, 24FC04H, 24FC08, 24FC16, 24FC16H, 24LC01B, 24LC01BH, 24LC02B, 24LC02BH, 24LC04B, 24LC04BH, 24LC08B, 24LC08BH, 24LC16B, 24LC16BH, 25AA320A, 25AA640A, 25CS320, 25CS640, 25LC320A, 25LC640A, AT24C01D, AT24C02D, AT24C04D, AT24C08C, AT24C08D, AT24C16C, AT24C16D and AT24C32E device families available in 8L SOIC (.150in) package.Reason for Change: To improve manufacturability CuPdAu as a new wire material and QMI519 as a new die attach material
Revision History:February 7, 2022: Issued final notification.April 6, 2022: Re-issuance of PCN to update the affected CPN list. Update the estimated first shipment date on March 30, 2022.Description of Change:Qualification of 3280 die attach material and new lead frame design for selected products available in 8L SOIC package assembled at MMT assembly site.Pre and Post Change Summary: See attachedImpacts to Data Sheet:NoneChange ImpactNoneReason for Change:To improve productivity by qualifying new lead frame design and die attach material.Change Implementation Status:In ProgressEstimated First Ship Date:March 30, 2022 (date code: 2214)Note: Please be advised that after the estimated first ship date customers may receive pre and post change parts.Time Table Summary: See attached
Part Status:
Microchip 25LC640AT-I/SN - Technical Attributes
Memory Density: | 64kb |
Memory Organization: | 8 K x 8 |
Supply Voltage-Nom: | 2.5V to 5.5V |
Clock Frequency-Max: | 10MHz |
Write Cycle Time-Max (tWC): | 5ms |
Package Style: | SOIC-8 |
Mounting Method: | Surface Mount |
Features & Applications
The 25LC640A series of 64 kbit Serial Electrically Erasable PRO is accessed via a simple Serial Peripheral Interface (SPI) compatible serial bus. The bus signals required are a clock input (SCK) plus separate data in (SI) and data out (SO) lines. Access to the device is controlled through a Chip Select [CS(bar)] input.
Communication to the device can be paused via the hold pin [HOLD(bar)]. While the device is paused, transitions on its inputs will be ignored, with the exception of Chip Select, allowing the host to service higher priority interrupts. The 25XX640A is available in standard packages including 8-lead PDIP and SOIC, and advanced packaging including 8-lead MSOP, 8-lead TSSOP, DFN and TDFN.
Features:
- Max. Clock 10 MHz
- Low-Power CMOS Technology
- Max. Write Current: 5 mA at 5.5 V, 10 MHz
- Read Current: 5 mA at 5.5 V, 10 MHz
- Standby Current: 1 μA at 5.5 V
- 8192 x 8-bit Organization
- 32 Byte Page
- Self-Timed Erase and Write Cycles (5 ms max.)
- Block Write Protection
- Protect none, 1/4, 1/2 or all of array
- Built-In Write Protection
- Power-on/off data protection circuitry
- Write enable latch
- Write-protect pin
- Sequential Read
- High Reliability
- Endurance: 1,000,000 erase/write cycles
- Data retention: > 200 years
- ESD protection: > 4000 V
- Temperature Ranges Supported;
Available Packaging
Package Qty:
3300 per Reel
Package Style:
SOIC-8
Mounting Method:
Surface Mount