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AT45DB642 Datasheet

  • AT45DB642

  • 64-megabit 2.7-volt Only Dual-interface DataFlash

  • 37頁(yè)

  • ATMEL   ATMEL

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Features
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Single 2.7V - 3.6V Supply
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Dual-interface Architecture
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鈥?Dedicated Serial Interface (SPI Modes 0 and 3 Compatible)
鈥?Dedicated Parallel I/O Interface (Optional Use)
Page Program Operation
鈥?Single Cycle Reprogram (Erase and Program)
鈥?8192 Pages (1056 Bytes/Page) Main Memory
Supports Page and Block Erase Operations
Two 1056-byte SRAM Data Buffers 鈥?Allows Receiving of Data
while Reprogramming the Flash Array
Continuous Read Capability through Entire Array
鈥?Ideal for Code Shadowing Applications
Low-power Dissipation
鈥?4 mA Active Read Current Typical
鈥?2 碌A(chǔ) CMOS Standby Current Typical
20 MHz Maximum Clock Frequency 鈥?Serial Interface
5 MHz Maximum Clock Frequency 鈥?Parallel Interface
Hardware Data Protection
Commercial and Industrial Temperature Ranges
64-megabit
2.7-volt Only
Dual-interface
DataFlash
廬
AT45DB642
Description
The AT45DB642 is a 2.7-volt only, dual-interface Flash memory ideally suited for a
wide variety of digital voice-, image-, program code- and data-storage applications. The
dual-interface of the AT45DB642 allows a dedicated serial interface to be connected to a
DSP and a dedicated parallel interface to be connected to a microcontroller or vice versa.
Pin Configurations
Pin Name
CS
SCK/CLK
SI
SO
I/O7 - I/O0
WP
RESET
RDY/BUSY
SER/PAR
Function
Chip Select
Serial Clock/Clock
Serial Input
Serial Output
Parallel Input/Output
Hardware Page Write Protect Pin
Chip Reset
Ready/Busy
Serial/Parallel Interface Control
Note:
NC
NC
RDY/BUSY
RESET
WP
NC
NC
NC
VCC
GND
NC
NC
NC
NC
CS
SCK/CLK
SI*
SO*
NC
NC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
TSOP Top View
Type 1
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
NC
NC
NC
NC
NC
I/O7*
I/O6*
I/O5*
I/O4*
VCCP*
GNDP*
I/O3*
I/O2*
I/O1*
I/O0*
SER/PAR*
NC
NC
NC
NC
DataFlash Card
7 6 5 4 3 2 1
(1)
*Optional Use 鈥?See pin description
text for connection information.
Note:
1. See AT45DCB008 Datasheet.
Rev. 1638F鈥揇FLSH鈥?9/02
1

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    Rectangular Pushbutton Switch Cap Red Screw On
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    Rectangular Pushbutton Switch Cap Gray Screw On
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    Round, Concave Pushbutton Switch Cap White Screw On
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    Round, Concave Pushbutton Switch Cap Red Screw On
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    Round, Concave Pushbutton Switch Cap Green Screw On
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    Round, Concave Pushbutton Switch Cap Blue Screw On
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    Round, Concave Pushbutton Switch Cap Gray Screw On
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