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AT27C520 Datasheet

  • AT27C520

  • ATMEL Corporation [512K 64K x 8 Multiplexed Addresses/ Outp...

  • ATMEL   ATMEL

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Features
鈥?/div>
8-Bit Multiplexed Addresses/Outputs
鈥?/div>
Fast Read Access Time - 70 ns
鈥?/div>
Low Power CMOS Operation
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?20 mA max. Active at 5 MHz
20-Lead TSSOP Package
20-Lead SOIC Package
28-Lead TSOP Package
5V
鹵
10% Supply
High Reliability CMOS Technology
鈥?2,000V ESD Protection
鈥?200 mA Latchup Immunity
Rapid
鈩?/div>
Programming Algorithm - 50
碌
s/byte (typical)
CMOS and TTL Compatible Inputs and Outputs
Integrated Product Identification Code
Commercial and Industrial Temperature Range
Description
The AT27C520 is a low-power, high performance 524,288 bit one-time programmable
read only memory (OTP EPROM) organized 64K by 8 bits. It incorporates latches for
the 8 lower order address bits to multiplex with the 8 data bits. This minimizes system
chip count, reduces cost, and simplifies the design of multiplexed bus systems. It
requires only one 5V power supply in normal read mode operation. Any byte can be
accessed in less than 70 ns, eliminating the need for speed reducing WAIT states on
high performance microprocessor systems.
Atmel鈥檚 scaled CMOS technology provides high speed, lower active power consump-
tion, and significantly faster programming. Power consumption is typically only 8 mA
in Active Mode.
The AT27C520 is available in 173 mil, 20-pin TSSOP; 300 mil, 20-pin SOIC; and 28-
pin TSOP, one-time programmable (OTP) plastic packages.
(continued)
512K (64K x 8)
Multiplexed
Addresses/
Outputs
OTP EPROM
AT27C520
Pin Configurations
Pin Name
A8 - A15
AD0 - AD7
OE /V
PP
ALE
Function
Addresses
Addresses/Outputs
Output Enable/V
PP
Address Latch Enable
TSOP Top View
A10
NC
NC
A12
A14
ALE
VCC
OE/VPP
A15
A13
A11
NC
NC
A9
22
23
24
25
26
27
28
1
2
3
4
5
6
7
21
20
19
18
17
16
15
14
13
12
11
10
9
8
A8
NC
NC
AD1
AD3
AD5
AD7
GND
AD6
AD4
AD2
NC
NC
AD0
TSSOP Top View
A10
A12
A14
ALE
VCC
OE/VPP
A15
A13
A11
A9
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
A8
AD1
AD3
AD5
AD7
GND
AD6
AD4
AD2
AD0
SOIC Top View
OE/VPP
A15
A13
A11
A9
AD0
AD2
AD4
AD6
GND
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
VCC
ALE
A14
A12
A10
A8
AD1
AD3
AD5
AD7
Rev. 0752C-C鈥?1/98
1

AT27C520 PDF文件相關(guān)型號(hào)

AT27C520-70SI,AT27C520-70XI

AT27C520相關(guān)型號(hào)PDF文件下載

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