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
32-megabit
2.7 volt
DataFlash
®
AT45DB321C
Preliminary
3387B–DFLSH–9/04
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.
CBGA Top View
through Package
A
B
C
D
E
1 2345
NC
NC
NC
NC
NC
VCC
WP
RESET
NC
NC
GND
RDY/BSY
SI
NC
NC
SCK
CS
SO
NC
NC
NC
NC
NC
NC
TSOP Top View – Type 1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
RDY/BUSY
RESET
WP
NC
NC
VCC
GND
NC
NC
NC
CS
SCK
SI
SO
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
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
CASON – Top View
through Package
SI
SCK
RESET
CS
SO
GND
VCC
WP
8
7
6
5
1
2
3
4
DataFlash Card
(1)
Top View through Package
Note: 1. See AT45DCB004 Datasheet
7654321
1