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25AA512 Datasheet(PDF) 1 Page - Microchip Technology |
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25AA512 Datasheet(HTML) 1 Page - Microchip Technology |
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1 / 36 page  2010 Microchip Technology Inc. DS22021F-page 1 25AA512 Device Selection Table Features: • 20 MHz max. Clock Speed • Byte and Page-level Write Operations: - 128-byte page -5 ms max. - No page or sector erase required • Low-Power CMOS Technology: - Max. Write Current: 5 mA at 5.5V, 20 MHz - Read Current: 10 mA at 5.5V, 20 MHz - Standby Current: 1 A at 2.5V (Deep power- down) • Electronic Signature for Device ID • Self-Timed Erase and Write cycles: - Page Erase (5 ms, typical) - Sector Erase (10 ms/sector, typical) - Bulk Erase (10 ms, typical) • Sector Write Protection (16K byte/sector): - 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 • High Reliability: - Endurance: 1 Million erase/write cycles - Data Retention: >200 years - ESD Protection: 4000V • Temperature Ranges Supported: - Industrial (I): -40°C to +85°C • Pb-free and RoHS Compliant Pin Function Table Description: The Microchip Technology Inc. 25AA512 is a 512 Kbit serial EEPROM memory with byte-level and page-level serial EEPROM functions. It also features Page, Sector and Chip erase functions typically associated with Flash-based products. These functions are not required for byte or page write operations. The memory 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 by a Chip Select (CS) input. Communication to the device can be paused via the hold pin (HOLD). While the device is paused, transi- tions on its inputs will be ignored, with the exception of Chip Select, allowing the host to service higher priority interrupts. The 25AA512 is available in standard packages includ- ing 8-lead PDIP, SOIC, and advanced 8-lead DFN package. All packages are Pb-free and RoHS compliant. Package Types (not to scale) Part Number VCC Range Page Size Temp. Ranges Packages 25AA512 1.8-5.5V 128 Byte I P, SN, SM, MF Name Function CS Chip Select Input SO Serial Data Output WP Write-Protect VSS Ground SI Serial Data Input SCK Serial Clock Input HOLD Hold Input VCC Supply Voltage CS SO WP VSS 1 2 3 4 8 7 6 5 VCC HOLD SCK SI PDIP/SOIC/SOIJ (P, SN, SM) DFN CS SO WP VSS HOLD SCK SI 5 6 7 8 4 3 2 1 VCC (MF) 512 Kbit SPI Bus Serial EEPROM |
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