器件名称: AT45BR3214B-C1
功能描述: 32-MEGABIT DATAFLASH + 4-MEGABIT SRAM STACK MEMORY
文件大小: 488.59KB 共40页
简 介:Features
32-Mbit DataFlash and 4-Mbit SRAM Single 62-ball (8 mm x 12 mm x 1.2 mm) CBGA Package 2.7V to 3.3V Operating Voltage
DataFlash
Single 2.7V to 3.3V Supply Serial Peripheral Interface (SPI) Compatible 20 MHz Max Clock Frequency Page Program Operation – Single Cycle Reprogram (Erase and Program) – 8192 Pages (528 Bytes/Page) Main Memory Supports Page and Block Erase Operations Two 528-byte SRAM Data Buffers – Allows Receiving of Data while Reprogramming of Nonvolatile Memory Continuous Read Capability through Entire Array – Ideal for Code Shadowing Applications Low Power Dissipation – 4 mA Active Read Current Typical – 2 A CMOS Standby Current Typical Hardware Data Protection Feature Industrial Temperature Range
32-megabit DataFlash + 4-megabit SRAM Stack Memory AT45BR3214B
SRAM
4-megabit (256K x 16) 2.7V to 3.3V VCC 70 ns Access Time Fully Static Operation and Tri-state Output 1.2V (Min) Data Retention Industrial Temperature Range
Rev. 3356B–DFLASH–10/04
1
Pin Configuration
Pin Name CS SCK SI SO WP RESET RDY/BUSY VCC GND A0 - A17 I/O0 - I/O15 SLB SUB SVCC SGND SCS1 SCS2 SWE SOE NC Function Chip Select Serial Clock Serial Input Serial Output Write Protect Reset READY BUSY Flash Power Supply Flash Ground SRAM Address Input SRAM Data Inputs/Outputs SRAM Lower Byte SRAM Upper Byte SRAM Power SRAM Ground SRAM Chip Select 1 SRAM Chip Select 2 SRAM Write Enable SRAM Output Enable No Connect
AT45BR3214B (Top View)
1 A
NC SI A16 A11 A8 A15 A10 A14 A9 ……
