AT49F020-90TC Atmel, AT49F020-90TC Datasheet

no-image

AT49F020-90TC

Manufacturer Part Number
AT49F020-90TC
Description
Manufacturer
Atmel
Datasheet

Specifications of AT49F020-90TC

Cell Type
NOR
Density
2Mb
Access Time (max)
90ns
Interface Type
Parallel
Boot Type
Bottom
Address Bus
18b
Operating Supply Voltage (typ)
5V
Operating Temp Range
0C to 70C
Package Type
TSOP-I
Program/erase Volt (typ)
5V
Sync/async
Asynchronous
Operating Temperature Classification
Commercial
Operating Supply Voltage (min)
4.5V
Operating Supply Voltage (max)
5.5V
Word Size
8b
Number Of Words
256K
Supply Current
50mA
Mounting
Surface Mount
Pin Count
32
Lead Free Status / Rohs Status
Not Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
AT49F020-90TC
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Features
Description
The AT49F020 is a 5-volt only in-system Flash Memory. Its 2 megabits of memory is
organized as 262,144 words by 8 bits. Manufactured with Atmel’s advanced nonvola-
tile CMOS technology, the device offers access times to 90 ns with power dissipation
of just 275 mW over the commercial temperature range. When the device is dese-
lected, the CMOS standby current is less than 100 A.
To allow for simple in-system reprogrammability, the AT49F020 does not require high
input voltages for programming. Five-volt-only commands determine the read and
programming operation of the device. Reading data out of the device is similar to
reading from an EPROM. Reprogramming the AT49F020 is performed by erasing the
entire 2 megabits of memory and then programming on a byte by byte basis. The byte
Pin Configurations
Pin Name
A0 - A17
CE
OE
WE
I/O0 - I/O7
NC
Single Voltage Operation
Fast Read Access Time - 90 ns
Internal Program Control and Timer
8K Bytes Boot Block With Lockout
Fast Erase Cycle Time - 10 seconds
Byte-By-Byte Programming - 50 µs/Byte
Hardware Data Protection
DATA Polling For End Of Program Detection
Low Power Dissipation
Typical 10,000 Write Cycles
VCC
– 5V Read
– 5V Reprogramming
– 50 mA Active Current
– 100 µA CMOS Standby Current
A11
A13
A14
A17
A16
A15
A12
WE
NC
A9
A8
A7
A6
A5
A4
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
TSOP Top View
Function
Addresses
Chip Enable
Output Enable
Write Enable
Data Inputs/Outputs
No Connect
Type 1
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
OE
A10
CE
I/O7
I/O6
I/O5
I/O4
I/O3
GND
I/O2
I/O1
I/O0
A0
A1
A2
A3
I/O0
A7
A6
A5
A4
A3
A2
A1
A0
GND
I/O0
I/O1
I/O2
A16
A15
A12
NC
A7
A6
A5
A4
A3
A2
A1
A0
PLCC Top View
5
6
7
8
9
10
11
12
13
DIP Top View
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
VCC
WE
A17
A14
A13
A8
A9
A11
OE
A10
CE
I/O7
I/O6
I/O5
I/O4
I/O3
29
28
27
26
25
24
23
22
21
A14
A13
A8
A9
A11
OE
A10
CE
I/O7
(continued)
2-Megabit
(256K x 8)
5-volt Only
Flash Memory
AT49F020
Not Recommended
for New Design
Contact Atmel to discuss
the latest design in trends
and options
Rev. 0567C–10/98
1

Related parts for AT49F020-90TC

AT49F020-90TC Summary of contents

Page 1

... Typical 10,000 Write Cycles Description The AT49F020 is a 5-volt only in-system Flash Memory. Its 2 megabits of memory is organized as 262,144 words by 8 bits. Manufactured with Atmel’s advanced nonvola- tile CMOS technology, the device offers access times with power dissipation of just 275 mW over the commercial temperature range. When the device is dese- lected, the CMOS standby current is less than 100 A ...

Page 2

... The typical number of program and erase cycles is in excess of 10,000 cycles. Block Diagram Device Operation READ: The AT49F020 is accessed like an EPROM. When CE and OE are low and WE is high, the data stored at the memory location determined by the address pins is asserted on the outputs. The outputs are put in the high impedance state whenever high ...

Page 3

... Respect to Ground .............................-0. Voltage on OE with Respect to Ground ...................................-0.6V to +13.5V TOGGLE BIT: In addition to DATA polling the AT49F020 provides another method for determining the end of a pro- gram or erase cycle. During a program or erase operation, successive attempts to read data from the device will result in I/O6 toggling between one and zero ...

Page 4

... A17 = A17 = Condition I/O CC Com 0. Ind 2. MHz OUT -400 -100 4. AT49F020-15 0°C - 70°C 0°C - 70°C -40°C - 85°C -40°C - 85°C 5V 10% 5V 10 OUT High Z High Z ( Manufacturer Code ( Device Code A17=V Manufacturer Code A17=V Device Code IH IL Min Max 10 10 100 ...

Page 5

... This parameter is characterized and is not 100% tested. AT49F020-90 Min Max after the address transition without impact on t ACC after the falling edge of CE without impact Output Test Load Max 6 12 AT49F020-12 AT49F020-15 Min Max Min Max 120 150 120 150 ACC after an address change ...

Page 6

... Address, OE Set-up Time AS OES t Address Hold Time AH t Chip Select Set-up Time CS t Chip Select Hold Time CH t Write Pulse Width ( Data Set-up Time Data, OE Hold Time DH OEH t Write Pulse Width High WPH AC Byte Load Waveforms WE Controlled CE Controlled AT49F020 6 Min Max Units ...

Page 7

Program Cycle Characteristics Symbol Parameter t Byte Programming Time BP t Address Set-up Time AS t Address Hold Time AH t Data Set-up Time DS t Data Hold Time DH t Write Pulse Width WP t Write Pulse Width High ...

Page 8

... OE (1)(2)(3) Toggle Bit Waveforms Notes: 1. Toggling either both OE and CE will operate toggle bit. The t input(s). 2. Beginning and ending state of I/O6 will vary. 3. Any address location may be used but the address should not vary. AT49F020 8 (1) (1) Min Typ Max Min Typ ...

Page 9

Software Product Identification Entry LOAD DATA AA TO ADDRESS 5555 LOAD DATA 55 TO ADDRESS 2AAA LOAD DATA 90 TO ADDRESS 5555 ENTER PRODUCT IDENTIFICATION (2)(3)(5) MODE Software Product Identification Exit LOAD DATA ADDRESS 5555 LOAD DATA ...

Page 10

... Plastic, J-Leaded Chip Carrier Package (PLCC) 32P6 32-Lead, 0.600" Wide, Plastic Dual Inline Package (PDIP) 32T 32-Lead, Thin Small Outline Package (TSOP) AT49F020 10 Ordering Code Package AT49F020-90JC 32J AT49F020-90PC 32P6 AT49F020-90TC 32T AT49F020-90JI 32J AT49F020-90PI 32P6 AT49F020-90TI 32T AT49F020-12JC 32J AT49F020-12PC 32P6 AT49F020-12TC ...

Page 11

Packaging Information 32J, 32-Lead, Plastic J-Leaded Chip Carrier (PLCC) Dimensions in Inches and (Millimeters) JEDEC OUTLINE MS-016 AE .045(1.14) X 45˚ PIN NO. 1 IDENTIFY .553(14.0) .547(13.9) .032(.813) .595(15.1) .026(.660) .585(14.9) .050(1.27) TYP .300(7.62) REF .430(10.9) .390(9.90) AT CONTACT POINTS ...

Page 12

... No licenses to patents or other intellectual prop Atmel are granted by the Company in connection with the sale of Atmel products, expressly or by implication. Atmel’s products are not authorized for use as critical components in life suppor t devices or systems. ...

Related keywords