AT49F040-15JC ATMEL [ATMEL Corporation], AT49F040-15JC Datasheet

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AT49F040-15JC

Manufacturer Part Number
AT49F040-15JC
Description
4 Megabit 512K x 8 5-volt Only CMOS Flash Memory
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet
Features
Description
The AT49F040 is a 5-volt-only in-system Flash Memory. Its 4 megabits of memory is
organized as 524,288 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 AT49F040 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 AT49F040 is performed by erasing
the entire 4 megabits of memory and then programming on a byte by byte basis. The
byte programming time is a fast 50 s. 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.
Pin Configurations
Pin Name Function
A0 - A18
CE
OE
WE
I/O0 - I/O7 Data Inputs/Outputs
Single Voltage Operation
Fast Read Access Time - 90 ns
Internal Program Control and Timer
16K bytes Boot Block With Lockout
Fast Erase Cycle Time - 10 seconds
Byte By Byte Programming - 50 s/Byte
Hardware Data Protection
DATA Polling For End Of Program Detection
Low Power Dissipation
Typical 10,000 Write Cycles
- 5V Read
- 5V Reprogramming
- 50 mA Active Current
- 100 A CMOS Standby Current
PLCC Top View
Addresses
Chip Enable
Output Enable
Write Enable
DIP Top View
TSOP Top View
Type 1
(continued)
AT49F040
AT49F040
4 Megabit
(512K x 8)
5-volt Only
CMOS Flash
Memory
Preliminary
4-209
0359C

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AT49F040-15JC Summary of contents

Page 1

... A CMOS Standby Current Typical 10,000 Write Cycles Description The AT49F040 is a 5-volt-only in-system Flash Memory. Its 4 megabits of memory is organized as 524,288 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 ...

Page 2

... The boot sector is designed to contain user secure Block Diagram Device Operation READ: The AT49F040 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. 13.5V TOGGLE BIT: In addition to DATA polling the AT49F040 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 re- sult in I/O6 toggling between one and zero ...

Page 4

... V I/O CC Com 0. Ind 2. MHz OUT -400 -100 4. AT49F040- - 10% 5V 10% I/O D OUT D IN High Z High Z ( Manufacturer Code IL ( (4) Device Code IH Manufacturer Code IL (4) ...

Page 5

... after the falling 4. This parameter is characterized and is not 100% tested ACC OE . ACC (1) Typ Max AT49F040 AT49F040-12 AT49F040-15 Min Max Min Max 120 150 120 150 Output Test Load Units Conditions ...

Page 6

... 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 AT49F040 4-214 Min Max Units ...

Page 7

... Data Hold Time DH t Write Pulse Width WP t Write Pulse Width High WPH t Erase Cycle Time EC Program Cycle Waveforms Chip Erase Cycle Waveforms Note: OE must be high only when WE and CE are both low. AT49F040 Min Typ Max Units ...

Page 8

... Notes: 1. These parameters are characterized and not 100% tested. 2. See t spec in AC Read Characteristics Toggle Bit Waveforms Notes: 1. Toggling either both OE and CE will operate toggle bit. The t OEHP met by the toggling input(s). AT49F040 4-216 (1) Min 10 10 (2) 0 (1) Min ...

Page 9

... ANY ADDRESS EXIT PRODUCT IDENTIFICATION (4) MODE Notes for boot block lockout feature enable: 1. Data Format: I/O7 - I/O0 (Hex); Address Format: A14 - A0 (Hex). 2. Boot block lockout feature enabled AT49F040 (1) LOAD DATA AA TO ADDRESS 5555 LOAD DATA 55 TO ADDRESS 2AAA LOAD DATA 80 TO ADDRESS 5555 ...

Page 10

... AT49F040-90JI 32J AT49F040-90PI 32P6 AT49F040-90TI 32T AT49F040-12JC 32J AT49F040-12PC 32P6 AT49F040-12TC 32T AT49F040-12JI 32J AT49F040-12PI 32P6 AT49F040-12TI 32T AT49F040-15JC 32J AT49F040-15PC 32P6 AT49F040-15TC 32T AT49F040-15JI 32J AT49F040-15PI 32P6 AT49F040-15TI 32T Package Type Operation Range Commercial ( Industrial (- Commercial ...

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