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24LC320-ST Datasheet(PDF) 1 Page - Microchip Technology |
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24LC320-ST Datasheet(HTML) 1 Page - Microchip Technology |
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1 / 12 page  © 1996 Microchip Technology Inc. Preliminary DS21158B-page 1 FEATURES • SPI modes 0,0 and 1,1 • 3.0 MHz Clock Rate • Single supply with Programming Operation down to 2.5V • Low Power CMOS Technology - Max Write Current: 5.0 mA - Read Current: 1 mA at 5.5V, 3 Mhz - Standby Current: 1 µA typical • 4096 x 8 Organization • 32-Byte Page • Sequential Read • Self-timed ERASE and WRITE Cycles • 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 • High Reliability - Endurance: 1M cycles (guaranteed) - Data Retention: >200 years - ESD protection: >4000V • 8-pin PDIP/SOIC, 14-pin TSSOP • Temperature ranges supported DESCRIPTION The Microchip Technology Inc. 25LC320 is a 32K-bit serial Electrically Erasable PROM (EEPROM). 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 through a chip select (CS) input, allowing any number of devices to share the same bus. There are two other inputs that provide the end user with additional flexibility. Communication to the device can be paused via the hold pin (HOLD). While the device is paused, transitions on its inputs will be ignored, with exception of chip select, allowing the host to service higher priority interrupts. Also write opera- tions to the Status Register can be disabled via the write protect pin (WP). - Commercial (C): 0 °C to +70 °C - Industrial (I): -40 °C to +85 °C PACKAGE TYPES BLOCK DIAGRAM DIP/SOIC CS SO WP VSS 1 2 3 4 8 7 6 5 VCC HOLD SCK SI 14 13 12 11 10 9 8 VCC HOLD NC NC NC SCK SI 1 2 3 4 5 6 7 CS SO NC NC NC WP VSS TSSOP SI SO SCK CS HOLD WP Status Register I/O Control Memory Control Logic X Dec HV Generator EEPROM Array Page Latches Y Decoder Sense Amp. R/W Control Logic Vcc Vss 25LC320 32K 2.5V SPI™ Bus Serial EEPROM SPI is a trademark of Motorola. This document was created with FrameMaker404 |
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Similar Description - 24LC320-ST |
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