AT45DB642D-CNU

Product Summary

The AT45DB642D-CNU is a 2.7-volt, dual-interface sequential access Flash memory ideally suited for a wide variety of digital voice-, image-, program code- and data-storage applications. The AT45DB642D-CNU supports RapidS serial interface and Rapid8 8-bit interface. RapidS serial interface is SPI compatible for frequencies up to 66 MHz. The dual-interface allows a dedicated serial interface to be connected to a DSP and a dedicated 8-bit interface to be connected to a microcontroller or vice versa. In addition to the main memory, the AT45DB642D-CNU also contains two SRAM buffers of 1,024 (binary buffer size) bytes/1,056 bytes (standard DataFlash buffer size) each. The AT45DB642D-CNU is enabled through the chip select pin (CS) and accessed via a three-wire interface consisting of the Serial Input (SI), Serial Output (SO), and the Serial Clock (SCK), or an 8-bit interface consisting of the input/output pins (I/O7 -I/O0) and the clock pin (CLK).

Parametrics

AT45DB642D-CNU absolute maximum ratings: (1)Temperature under Bias:-55℃ to +125℃; (2)Storage Temperature:-65℃ to +150℃; (3)All Input Voltages (except VCC but including NC pins) with Respect to Ground: -0.6V to +6.25V; (4)All Output Voltages with Respect to Ground: -0.6V to VCC+0.6V.

Features

AT45DB642D-CNU features: (1)Single 2.7V - 3.6V Supply; (2)Dual-interface Architecture:RapidS Serial Interface: 66 MHz Maximum Clock Frequency ; (3)SPI Compatible Modes 0 and 3:Rapid8 8-bit Interface: 50 MHz Maximum Clock Frequency; (4)User Configurable Page Size:1024 Bytes per Page, 1056 Bytes per Pagem Page Size Can Be Factory Pre-configured for 1024 Bytes; (5)Page Program Operation: Intelligent Programming Operation, 8192 Pages (1024/1056 Bytes/Page) Main Memory; (6)Flexible Erase Options: Page Erase (1 Kbyte), Block Erase (8 Kbytes), Sector Erase (256 Kbytes), Chip Erase (64 Mbits); (7)Two SRAM Data Buffers (1024/1056 Bytes): Allows Receiving of Data while Reprogramming the Flash Array; (8)Continuous Read Capability through Entire Array: Ideal for Code Shadowing Applications; (9)Low-power Dissipation: 10 mA Active Read Current Typical-Serial Interface, 10 mA Active Read Current Typical-8-bit Interface, 25μA Standby Current Typical, 15μA Deep Power Down Typical; (10)Hardware and Software Data Protection Features:Individual Sector; (11)Permanent Sector Lockdown for Secure Code and Data Storage: Individual Sector; (12)Security: 128-byte Security Register: 64-byte User Programmable Space, Unique 64-byte Device Identifier; (13)JEDEC Standard Manufacturer and Device ID Read; (14)100,000 Program/Erase Cycles Per Page Minimum; (15)Data Retention:20 Years; (16)Green (Pb/Halide-free/RoHS Compliant) Packaging Options; (17)Temperature Range: Industrial: -40℃ to +85℃.

Diagrams