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AT45D021-TI Datasheet

  • AT45D021-TI

  • 2-Megabit 5-volt Only Serial DataFlash

  • 18頁

  • ATMEL   ATMEL

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Features
鈥?/div>
Single 4.5V - 5.5V Supply
鈥?/div>
Serial Interface Architecture
鈥?/div>
Page Program Operation
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
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鈥?Single Cycle Reprogram (Erase and Program)
鈥?1024 Pages (264 Bytes/Page) Main Memory
Two 264-Byte SRAM Data Buffers 鈥?Allows Receiving of Data
while Reprogramming of Nonvolatile Memory
Internal Program and Control Timer
Fast Page Program Time 鈥?7 ms Typical
80
碌
s Typical Page to Buffer Transfer Time
Low Power Dissipation
鈥?15 mA Active Read Current Typical
鈥?15
碌A(chǔ)
CMOS Standby Current Typical
10 MHz Max Clock Frequency
Hardware Data Protection Feature
Serial Peripheral Interface (SPI) Compatible 鈥?Modes 0 and 3
CMOS and TTL Compatible Inputs and Outputs
Commercial and Industrial Temperature Ranges
2-Megabit
5-volt Only
Serial
DataFlash
廬
AT45D021
Description
The AT45D021 is a 5-volt only, serial interface Flash memory suitable for in-system
reprogramming. Its 2,162,688 bits of memory are organized as 1024 pages of 264-
bytes each. In addition to the main memory, the AT45D021 also contains two data
SRAM buffers of 264-bytes each. The buffers allow receiving of data while a page in
the main memory is being reprogrammed. Unlike conventional Flash memories that
are accessed randomly with multiple address lines and a parallel interface, the
DataFlash uses a serial interface to sequentially access its data. The simple serial
interface facilitates hardware layout, increases system reliability, minimizes switching
(continued)
Pin Configurations
Pin Name
CS
SCK
SI
SO
WP
RESET
RDY/BUSY
Function
Chip Select
Serial Clock
Serial Input
Serial Output
Harware Page Write
Protect Pin
Chip Reset
Ready/Busy
TSOP Top View
Type 1
RDY/BUSY
RESET
WP
NC
NC
VCC
GND
NC
NC
NC
CS
SCK
SI
SO
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
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
GND
NC
NC
CS
SCK
SI
SO
NC
NC
NC
NC
NC
NC
NC
PLCC
CS
NC
NC
GND
VCC
NC
NC
Note:
PLCC package pins 16 and 17
are DON鈥橳 CONNECT.
PLCC
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
VCC
NC
NC
WP
RESET
RDY/BUSY
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
DC
DC
NC
NC
NC
14
15
16
17
18
19
20
SCK
SI
SO
NC
NC
NC
NC
NC
NC
5
6
7
8
9
10
11
12
13
4
3
2
1
32
31
30
29
28
27
26
25
24
23
22
21
WP
RESET
RDY/BUSY
NC
NC
NC
NC
NC
NC
Rev. 0869B鈥?7/98
1

AT45D021-TI 產(chǎn)品屬性

  • 0現(xiàn)貨

  • 停產(chǎn)

  • -

  • 托盤

  • 停產(chǎn)

  • 非易失

  • 閃存

  • 閃存

  • 2Mb

  • 264 字節(jié) x 1024 頁

  • SPI

  • 10 MHz

  • 14ms

  • -

  • 4.5V ~ 5.5V

  • -40°C ~ 85°C（TC）

  • 表面貼裝型

  • 28-TSSOP（0.465"，11.80mm 寬）

  • 28-TSOP

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    Round, Concave Pushbutton Switch Cap Green Screw On
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