AT45DB321BTC ATMEL Corporation, AT45DB321BTC Datasheet
AT45DB321BTC
Manufacturer Part Number
AT45DB321BTC
Description
Manufacturer
ATMEL Corporation
Datasheet
1.AT45DB321BTC.pdf
(32 pages)
Specifications of AT45DB321BTC
Case
QFN
Date_code
07+
Features
•
•
•
•
•
•
•
•
•
•
•
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Description
The AT45DB321B is a 2.7-volt only, serial interface Flash memory ideally suited for
a wide variety of digital voice-, image-, program code- and data-storage applications.
Its 34,603,008 bits of memory are organized as 8192 pages of 528 bytes each. In
a dd itio n to t he ma in me mo r y, th e AT4 5 D B3 2 1B a lso c o nt ain s two SR AM
data buffers of 528 bytes each. The buffers allow receiving of data while a page in the
main memory is being reprogrammed, as well as reading or writing a continuous data
Pin Configurations
Pin Name
CS
SCK
SI
SO
WP
RESET
RDY/BUSY
GND
SCK
Single 2.7V - 3.6V Supply
Serial Peripheral Interface (SPI) Compatible
20 MHz Max Clock Frequency
Page Program Operation
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
Low Power Dissipation
Hardware Data Protection Feature
100% Compatible to AT45DB321
5.0V-tolerant Inputs: SI, SCK, CS, RESET and WP Pins
Commercial and Industrial Temperature Ranges
NC
NC
CS
SO
NC
NC
NC
NC
NC
NC
NC
SI
– Single Cycle Reprogram (Erase and Program)
– 8192 Pages (528 Bytes/Page) Main Memory
– Ideal for Code Shadowing Applications
– 4 mA Active Read Current Typical
– 2 µA CMOS Standby Current Typical
1
2
3
4
5
6
7
8
9
10
11
12
13
14
SOIC
28
27
26
25
24
23
22
21
20
19
18
17
16
15
Function
Chip Select
Serial Clock
Serial Input
Serial Output
Hardware Page Write Protect Pin
Chip Reset
Ready/Busy
VCC
NC
NC
WP
RESET
RDY/BUSY
NC
NC
NC
NC
NC
NC
NC
NC
RDY/BUSY
RESET
GND
VCC
SCK
WP
NC
NC
NC
NC
NC
NC
NC
CS
SO
SI
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
TSOP Top View
Type 1
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
CBGA Top View through Package
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
Note:
C
D
G
H
A
B
E
F
J
1.
DataFlash Card
NC
NC
NC
NC
NC
NC
NC
NC
1
SCK
7 6 5 4 3 2 1
See AT45DCB004 Datasheet
NC
NC
NC
CS
SO
NC
NC
NC
2
RDY/BSY
GND
NC
NC
NC
NC
NC
NC
SI
3
RESET
VCC
NC
NC
NC
WP
NC
NC
NC
4
NC
NC
NC
NC
NC
NC
NC
NC
NC
5
(1)
32-megabit
2.7-volt Only
DataFlash
AT45DB321B
Rev. 2223E–DFLASH–11//03
®
1
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