参数资料
型号: AT45DB321B-RC
厂商: Atmel
文件页数: 1/32页
文件大小: 0K
描述: IC FLASH 32MBIT 20MHZ 28SOIC
标准包装: 26
格式 - 存储器: 闪存
存储器类型: DataFLASH
存储容量: 32M(8192 页 x 528 字节)
速度: 20MHz
接口: SPI 3 线串行
电源电压: 2.7 V ~ 3.6 V
工作温度: 0°C ~ 70°C
封装/外壳: 28-SOIC(0.342",8.69mm 宽)
供应商设备封装: 28-SOIC W
包装: 管件
Features
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Single 2.7V - 3.6V 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
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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 μA CMOS Standby Current Typical
Hardware Data Protection Feature
100% Compatible to AT45DB321
5.0V-tolerant Inputs: SI, SCK, CS, RESET and WP Pins
Commercial and Industrial Temperature Ranges
32-megabit
2.7-volt Only
DataFlash ?
AT45DB321B
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
Function
CBGA Top View through Package
CS
SCK
Chip Select
Serial Clock
A
1
2
NC
3
NC
4
NC
5
NC
B
SI
Serial Input
C
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
SO
Serial Output
D
E
NC
SCK GND VCC
NC
WP
Hardware Page Write Protect Pin
F
NC
NC
CS RDY/BSY WP NC
SO SI RESET NC
RESET
Chip Reset
G
H
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
RDY/BUSY
Ready/Busy
J
NC
NC
NC
NC
NC
SOIC
TSOP Top View
DataFlash Card (1)
GND
NC
1
2
28
27
VCC
NC
Type 1
7 6 5 4 3 2 1
NC
CS
SCK
SI
SO
NC
NC
NC
NC
NC
NC
NC
3
4
5
6
7
8
9
10
11
12
13
14
26
25
24
23
22
21
20
19
18
17
16
15
NC
WP
RESET
RDY/BUSY
NC
NC
NC
NC
NC
NC
NC
NC
RDY/BUSY
RESET
WP
NC
NC
NC
VCC
GND
NC
NC
NC
NC
CS
SCK
SI
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
Note:
1.
See AT45DCB004 Datasheet
SO
16
17
NC
Rev. 2223E–DFLASH–11//03
1
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