25LC256-E/ST Microchip

25AA256/25LC256 256K SPI Bus Serial EEPROM Device Selection Table Part Number VCC Range Page Size Temp. Ranges Packages 25LC256 2.5V-5.5V 64 Bytes I, E MF, P, SN, SM, ST 25AA256 1.8V-5.5V 64 Bytes I, E MF, P, SN, SM, ST Features Pin Function Table Maximum Clock 10 MHz Name Function Low-Power CMOS Technology: - Maximum Write current: 5 mA at 5.5V, CS Chip Select Input 10 MHz SO Serial Data Output - Read current: 6 mA at 5.5V, 10 MHz WP Write-Protect - Standby current: 1 A at 5.5V VSS Ground 32,768 x 8-Bit Organization SI Serial Data Input 64-Byte Page SCK Serial Clock Input Self-Timed Erase and Write Cycles (5 ms maximum) Hold Input HOLD Block Write Protection: VCC Supply Voltage - Protect none, 1/4, 1/2 or all of array Built-In Write Protection: Description - Power-on/off data protection circuitry The Microchip Technology Inc. 25AA256/25LC256 - Write enable latch (1) (25XX256 ) are 256-Kbit Serial Electrically Erasable - Write-protect pin PROMs. The memory is accessed via a simple Serial Sequential Read Peripheral Interface (SPI) compatible serial bus. The bus signals required are a clock input (SCK) plus High Reliability: separate data in (SI) and data out (SO) lines. Access to - Endurance: 1,000,000 erase/write cycles ) the device is controlled through a Chip Select (CS - Data retention: > 200 years input. - ESD protection: > 4000V Communication to the device can be paused via the Temperature Ranges Supported: hold pin (HOLD). While the device is paused, - Industrial (I): -40Cto +85C transitions on its inputs will be ignored, with the - Extended (E): -40C to +125C exception of Chip Select, allowing the host to service RoHS Compliant higher priority interrupts. Automotive AEC-Q100 Qualified Note 1: 25XX256 is used in this document as a generic part number for the Packages 25AA256/25LC256 devices. 8-Lead DFN-S, 8-Lead PDIP, 8-Lead SOIC, 8-Lead SOIJ and 8-Lead TSSOP Package Types (not to scale) DFN-S TSSOP Rotated TSSOP PDIP/SOIC CS 1 8 VCC CS 1 8 Vcc 8 1 8 SCK CS 1 VCC HOLD SO 2 7 HOLD 2 2 7 SO 7 HOLD VCC 2 7 SI SO HOLD WP 3 6 SCK 3 6 CS 3 6 VSS WP SCK WP 3 6 SCK VSS 4 5 SO 5 WP SI Vss 4 5 SI 4 4 VSS 5 SI 2003-2021 Microchip Technology Inc. DS20001822J-page 125AA256/25LC256 1.0 ELECTRICAL CHARACTERISTICS () Absolute Maximum Ratings VCC.............................................................................................................................................................................6.5V SS ......................................................................................................... -0.6V to VCC +1.0V All inputs and outputs w.r.t. V Storage temperature ...............................................................................................................................-65C to +150C Ambient temperature under bias.............................................................................................................-40C to +125C ESD protection on all pins..........................................................................................................................................4 kV NOTICE: Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only and functional operation of the device at those or any other conditions above those indicated in the operational listings of this specification is not implied. Exposure to maximum rating conditions for an extended period of time may affect device reliability. TABLE 1-1: DC CHARACTERISTICS Industrial (I): TA = -40C to +85C VCC = 1.8V to 5.5V DC CHARACTERISTICS Extended (E): TA = -40C to +125C VCC = 1.8V to 5.5V Param. Symbol Characteristic Minimum Maximum Units Test Conditions No. D001 VIH High-Level Input Voltage 0.7 VCC VCC +1 V D002 VIL -0.3 0.3 VCC VVCC2.5V Low-Level Input Voltage D003 VIL -0.3 0.2 VCC VVCC < 2.5V D004 VOL 0.4 VIOL = 2.1 mA, VCC = 4.5V Low-Level Output Voltage D005 VOL 0.2 VIOL = 1.0 mA, VCC = 2.5V High-Level Output VCC -0.5 V IOH = -400 A D006 VOH Voltage D007 ILI Input Leakage Current 1 A CS = VCC, VIN = VSS or VCC D008 ILO Output Leakage Current 1 A CS = VCC, VOUT = VSS or VCC Internal Capacitance 7 pFTA = 25C, FCLK = 1.0 MHz, D009 CINT (All Inputs and Outputs) VCC = 5.0V (Note 2) 6 mAVCC = 5.5V FCLK = 10.0 MHz SO = Open ICC D010 Read CC = 2.5V FCLK = 5.0 MHz 2.5 mAV Operating Current SO = Open 5 mAVCC = 5.5V ICC D011 Write 3 mAVCC = 2.5V = VCC = 5.5V, Inputs tied to 5 ACS VCC or VSS, +125C D012 ICCS Standby Current 1 ACS = VCC = 5.5V, Inputs tied to VCC or VSS, +85C Note 1: Typical measurements taken at room temperature (+25C). 2: This parameter is periodically sampled and not 100% tested. DS20001822J-page 2 2003-2021 Microchip Technology Inc.