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The Atmel® AT25DF641 is a serial interface Flash memory device designed for use in a wide variety of high-volume consumer based applications in which program code is shadowed from Flash memory into embedded or external RAM for execution. The flexible erase architecture of the AT25DF641A, with its erase granularity as small as 4-Kbytes, makes it ideal for data storage as well, eliminating the need for additional data storage EEPROM devices. Features • Single 2.7V - 3.6V Supply • Serial Peripheral Interface (SPI) Compatible – Supports SPI Modes 0 and 3 – Supports Atmel RapidS Operation – Supports Dual-Input Program and Dual-Output Read • Very High Operating Frequencies – 100MHz for RapidS – 85MHz for SPI – Clock-to-Output (tV) of 5ns Maximum • Flexible, Optimized Erase Architecture for Code + Data Storage Applications – Uniform 4-Kbyte Block Erase – Uniform 32-Kbyte Block Erase – Uniform 64-Kbyte Block Erase – Full Chip Erase • Individual Sector Protection with Global Protect

AT89C51RD2/ED2 is high performance CMOS Flash version of the 80C51 CMOS single chip 8-bit microcontroller. It contains a 64-Kbyte Flash memory block for code and for data. The 64-Kbytes Flash memory can be programmed eitherin parallel mode or in serial mode with the ISP capability or with software. The programming voltage is internally generated from the standard VCC pin. The AT89C51RD2/ED2 retains all of the features of the Atmel 80C52 with 256 bytes of internal RAM, a 9-source 4-level interrupt controller and three timer/counters. The AT89C51ED2 provides 2048 bytes of EEPROM for nonvolatile data storage.

The SN74LS74AN is a dual D-type flip-flop based on TTL logic. It has an inverting and non-inverting polarity, and is packaged in a tube alternate packaging. Features: -Supply voltage max of 5.25V -Maximum operating temperature of +70C-Input type of TTL -Low level output current of 8mA -Max propagation delay of 25ns @ 2.5V, 15pF -Logic type of D-type latch and flip-flop The SN74LS74AN is suitable for applications such as data storage, signal sampling, and pulse generation. It can also be used in digital logic circuits, counters, and shift registers.

The 24LC256-I/SN is a Serial 2-Wire I2C Memory IC from Microchip. It has an access time of 5 ms and a maximum operating temperature of +85 C. It is available in an SOIC-Narrow-8 package and has a unit weight of 0.006596 oz. Product Details Description: The 24LC256-I/SN is a Serial 2-Wire I2C Memory IC from Microchip. It has an access time of 5 ms and a maximum operating temperature of +85 C. It is available in an SOIC-Narrow-8 package and has a unit weight of 0.006596 oz. Features:• Interface-Type: Serial 2-Wire I2C • Mounting-Style: SMD/SMT • Access-Time: 5 ms • Maximum Operating Temperature: + 85 C • Supply-Voltage-Min: 2.5 V • Package-Case: SOIC-Narrow-8 • Supply-Current-Max: 3 mA • Supply-Voltage-Max: 5.5 V • Operating-Supply-Current: 3 mA Applications: The 24LC256-I/SN is suitable for applications such as data logging, data storage, and memory expansion. It can also be used in embedded systems, industrial automation, and consumer electronics.