25AA1024_1005

25AA1024 1 Mbit SPI Bus Serial EEPROM Device Selection Table Part Number 25AA1024 VCC Range 1.8-5.5V Page Size 256 Byte Temp. Ranges I Packages P, SM, MF Features: • 20 MHz max. Clock Speed • Byte and Page-level Write Operations: - 256 byte page - 6 ms max. write cycle time - No page or sector erase required • Low-Power CMOS Technology: - Max. Write current: 5 mA at 5.5V, 20 MHz - Read current: 7 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 (6 ms max.) - Sector Erase (10 ms max.) - Chip Erase (10 ms max.) • Sector Write Protection (32K 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: 1M 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 Description: The Microchip Technology Inc. 25AA1024 is a 1024 Kbit serial EEPROM memory with byte-level and pagelevel 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, transitions on its inputs will be ignored, with the exception of Chip Select, allowing the host to service higher priority interrupts. The 25AA1024 is available in standard packages including 8-lead PDIP and SOIJ, and advanced 8-lead DFN package. All devices are Pb-free. Package Types (not to scale) DFN 25AA1024 CS 1 SO 2 WP 3 VSS 4 (MF) 8 7 6 5 VCC HOLD SCK SI PDIP/SOIJ (P, SM) 25AA1024 CS SO WP VSS 1 2 3 4 8 7 6 5 VCC HOLD SCK SI Pin Function Table Name CS SO WP VSS SI SCK HOLD VCC Function Chip Select Input Serial Data Output Write-Protect Ground Serial Data Input Serial Clock Input Hold Input Supply Voltage  2010 Microchip Technology Inc. DS21836H-page 1 25AA1024 1.0 ELECTRICAL CHARACTERISTICS Absolute Maximum Ratings (†) VCC .............................................................................................................................................................................6.5V All inputs and outputs w.r.t. VSS ......................................................................................................... -0.6V to VCC +1.0V Storage temperature .................................................................................................................................-65°C to 150°C Ambient temperature under bias ...............................................................................................................-40°C to 125°C 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 = 0°C to +85°C Industrial (I): TA = -40°C to +85°C * Limited industrial temp range. Min. .7 VCC -0.3 -0.3 — — VCC -0.2 — — — Max. VCC +1 0.3 VCC 0.2 VCC 0.4 0.2 — ±1 ±1 7 Units V V V V V V A A pF VCC2.7V VCC < 2.7V IOL = 2.1 mA IOL = 1.0 mA, VCC < 2.5V IOH = -400 A CS = VCC, VIN = VSS TO VCC CS = VCC, VOUT = VSS TO VCC TA = 25°C, CLK = 1.0 MHz, VCC = 5.0V (Note) VCC = 5.5V; FCLK = 20.0 MHz; SO = Open VCC = 2.5V; FCLK = 10.0 MHz; SO = Open VCC = 5.5V VCC = 2.5V CS = VCC = 5.5V, Inputs tied to VCC or VSS, 85°C CS = VCC = 2.5V, Inputs tied to VCC or VSS, 85°C VCC = 1.8V to 5.5V VCC = 2.0V to 5.5V DC CHARACTERISTICS Param. No. D001 D002 D003 D004 D005 D006 D007 D008 D009 Sym. VIH1 VIL1 VIL2 VOL VOL VOH ILI ILO CINT Characteristic High-level input voltage Low-level input voltage Low-level output voltage High-level output voltage Input leakage current Output leakage current Internal capacitance (all inputs and outputs) Test Conditions D010 ICC Read Operating current — — 10 5 mA mA mA mA A A D011 D012 D13 Note: ICC Write ICCS ICCSPD Standby current Deep power-down current — — — — 7 5 12 1 This parameter is periodically sampled and not 100% tested. DS21836H-page 2  2010 Microchip Technology Inc. 25AA1024 TABLE 1-2: AC CHARACTERISTICS Industrial (I)*: TA = 0°C to +85°C Industrial (I): TA = -40°C to +85°C *Limited industrial temp range. Min. — — — 25 50 250 50 100 500 Max. 20 10 2 — — — — — — Units MHz MHz MHz ns ns ns ns ns ns VCC = 1.8V to 5.5V VCC = 2.0V to 5.5V AC CHARACTERISTICS Param. No. 1 Sym. FCLK Characteristic Clock frequency Conditions 4.5 VCC 5.5 2.5 VCC 5.5 1.8  VCC