Electronic Components Datasheet Search |
|
AT49F020-90TI Datasheet(PDF) 1 Page - ATMEL Corporation |
|
AT49F020-90TI Datasheet(HTML) 1 Page - ATMEL Corporation |
1 / 10 page 1 Features • Single Voltage Operation – 5V Read – 5V Reprogramming • Fast Read Access Time - 55 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 – 50 mA Active Current – 100 µA CMOS Standby Current • 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 to 55 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 µA. 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 programming time is a fast 50 µs. The end of a program cycle can be optionally detected by the DATA polling feature. Once the end of a byte program cycle has been detected, a new access for a read or program can begin. The typical number of pro- gram and erase cycles is in excess of 10,000 cycles. 2-Megabit (256K x 8) 5-volt Only CMOS Flash Memory AT49F020 0567B-A–8/97 Pin Configurations Pin Name Function A0 - A17 Addresses CE Chip Enable OE Output Enable WE Write Enable I/O0 - I/O7 Data Inputs/Outputs NC No Connect 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 NC A16 A15 A12 A7 A6 A5 A4 A3 A2 A1 A0 I/O0 I/O1 I/O2 GND VCC WE A17 A14 A13 A8 A9 A11 OE A10 CE I/O7 I/O6 I/O5 I/O4 I/O3 PLCC Top View 5 6 7 8 9 10 11 12 13 29 28 27 26 25 24 23 22 21 A7 A6 A5 A4 A3 A2 A1 A0 I/O0 A14 A13 A8 A9 A11 OE A10 CE I/O7 TSOP Top View Type 1 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 A11 A9 A8 A13 A14 A17 WE VCC NC A16 A15 A12 A7 A6 A5 A4 OE A10 CE I/O7 I/O6 I/O5 I/O4 I/O3 GND I/O2 I/O1 I/O0 A0 A1 A2 A3 (continued) |
Similar Part No. - AT49F020-90TI |
|
Similar Description - AT49F020-90TI |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.NET |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |