AT45DB321C Datasheet, PDF (1/37 Pages) ATMEL Corporation – 32 MEGABIT 2.7 VOLT DATAFLASH

Features
• Single 2.7 - 3.6V Supply
• RapidS^™ Serial Interface: 40 MHz Maximum Clock Frequency
(SPI Modes 0 and 3 Compatible for Frequencies Up to 33 MHz)
• Page Program
– 8192 Pages (528 Bytes/Page)
• Automated Erase Operations
– Page Erase 528 Bytes
– Block Erase 4,224 Bytes
• Two 528-byte SRAM Data Buffers – Allows Receiving of Data
while Reprogramming the Flash Array
• Continuous Read Capability through Entire Array
– Ideal for Code Shadowing Applications
• Low-power Dissipation
– 10 mA Active Read Current Typical – Serial Interface
– 8 µA CMOS Standby Current Typical
• Hardware and Software Data Protection Features
– Individual Sector Locking
• Security: 128-byte Security Register
– 64-byte User Programmable Space
– Unique 64-byte Device Identifier
• JEDEC Standard Manufacturer and Device ID Read
• 100,000 Program/Erase Cycles per Page
• Data Retention – 20 years
• Commercial and Industrial Temperature Ranges
• Green (Pb/Halide-free) Packaging Options
Description
The AT45DB321C is an SPI compatible, serial-interface Flash memory ideally suited
for a wide variety of digital voice-, image-, program code- and data-
storage applications. The AT45DB321C supports a 4-wire serial interface known as
RapidS for applications requiring very high speed operations.
Pin Configurations
Pin Name Function
CS
Chip Select
SCK
Serial Clock
SI
Serial Input
SO
Serial Output
WP
Hardware Page
Write Protect Pin
RESET
Chip Reset
RDY/BUSY Ready/Busy
DataFlash Card⁽¹⁾
Top View through Package
7654321
TSOP Top View – Type 1
RDY/BUSY 1
RESET 2
WP 3
NC 4
NC 5
VCC 6
GND 7
NC 8
NC 9
NC 10
CS 11
SCK 12
SI 13
SO 14
28 NC
27 NC
26 NC
25 NC
24 NC
23 NC
22 NC
21 NC
20 NC
19 NC
18 NC
17 NC
16 NC
15 NC
CBGA Top View
through Package
12345
A
NC NC NC NC
B
NC SCK GND VCC NC
C
NC CS RDY/BSY WP NC
D
NC SO SI RESET NC
E
NC NC NC NC NC
CASON – Top View
through Package
SI 1
SCK 2
RESET 3
CS 4
8 SO
7 GND
6 VCC
5 WP
Note: 1. See AT45DCB004 Datasheet
32-megabit
2.7 volt
DataFlash^®
AT45DB321C
Preliminary
3387B–DFLSH–9/04
1