AT45DB321 ATMEL Corporation, AT45DB321 Datasheet
AT45DB321
Manufacturer Part Number
AT45DB321
Description
32-Megabit 2.7-volt Only Serial DataFlash
Manufacturer
ATMEL Corporation
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
AT45DB321-SU
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Part Number:
AT45DB321-TC
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Company:
Part Number:
AT45DB321A-CC
Manufacturer:
ATMEL
Quantity:
6
Part Number:
AT45DB321A-CC
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Company:
Part Number:
AT45DB321B-CC
Manufacturer:
ATMEL
Quantity:
97
Part Number:
AT45DB321B-CC
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Part Number:
AT45DB321B-RC
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Features
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Description
The AT45DB321 is a 2.7-volt only, serial interface Flash memory suitable for in-sys-
tem reprogramming. Its 34,603,008 bits of memory are organized as 8192 pages of
528 bytes each. In addition to the main memory, the AT45DB321 also contains two
SRAM data buffers of 528 bytes each. The buffers allow receiving of data while a
page in the main memory is being reprogrammed. Unlike conventional Flash memo-
Pin Configurations
Pin Name
CS
SCK
SI
SO
WP
RESET
RDY/BUSY
Single 2.7V - 3.6V Supply
Serial Interface Architecture
Page Program Operation
Optional Page and Block Erase Operations
Two 528-Byte SRAM Data Buffers – Allows Receiving of Data while Reprogramming of
Nonvolatile Memory
Internal Program and Control Timer
Fast Page Program Time – 7 ms Typical
120 s Typical Page to Buffer Transfer Time
Low-Power Dissipation
13 MHz Max Clock Frequency
Hardware Data Protection Feature
Serial Peripheral Interface (SPI) Compatible – Modes 0 and 3
CMOS and TTL Compatible Inputs and Outputs
Commercial and Industrial Temperature Ranges
– Single Cycle Reprogram (Erase and Program)
– 8192 Pages (528 Bytes/Page) Main Memory
– 4 mA Active Read Current Typical
– 3 A CMOS Standby Current Typical
Chip Select
Hardware Page
Write Protect Pin
Chip Reset
Ready/Busy
Function
Serial Clock
Serial Input
Serial Output
RDY/BUSY
CBGA Top View Through Package
RESET
GND
VCC
SCK
WP
NC
NC
NC
NC
NC
NC
NC
CS
SO
SI
A
B
C
D
E
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
TSOP Top View
NC
NC
NC
NC
1
Type 1
SCK
NC
CS
SO
NC
2
RDY/BSY
GND
NC
NC
3
SI
RESET
VCC
NC
WP
NC
4
NC
NC
NC
NC
NC
5
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
(continued)
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
32-Megabit
2.7-volt Only
Serial
DataFlash
AT45DB321
Preliminary
AT45DB321
Preliminary 16-
Megabit 2.7-volt
Only Serial
DataFlash
Rev. 1121A–09/98
®
1
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