Manual

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Table Of Contents

Features

• Single-voltage Operation

–5V Read

– 5V Reprogramming

• Fast Read Access Time - 55 ns

• Internal Program Control and Timer

• Sector Architecture

– One 16K Byte Boot Block with Programming Lockout

– Two 8K Byte Parameter Blocks

– Two Main Memory Blocks (96K, 128K Bytes)

• Fast Erase Cycle Time - 10 seconds

• Byte-by-byte Programming - 10 µs/Byte Typical

• 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 AT49F002(N)(T) is a 5-volt only in-system reprogrammable Flash memory. Its 2

megabits of memory is organized as 262,144 words by 8 bits. Manufactured with

Atmel’s advanced nonvolatile CMOS technology, the device offers access times to 55

ns with power dissipation of just 275 mW over the commercial temperature range.

Rev. 1017D–10/99

2-megabit

(256K x 8)

5-volt Only

Flash Memory

AT49F002

AT49F002N

AT49F002T

AT49F002NT

Pin Configurations

Pin Name Function

A0 - A17 Addresses

Chip Enable

Output Enable

WE Write Enable

RESET

I/O0 - I/O7 Data Inputs/Outputs

DC Don’t Connect

DIP Top View

* RESET

A16

A15

A12

I/O0

I/O1

I/O2

GND

VCC

A17

A14

A13

A11

A10

I/O7

I/O6

I/O5

I/O4

I/O3

PLCC Top View

I/O0

A14

A13

A11

A10

I/O7

I/O1

I/O2

GND

I/O3

I/O4

I/O5

I/O6

A12

A15

A16

RESET *

VCC

A17

(continued)

VSOP Top View (8 x 14 mm) or

TSOP Top View (8 x 20 mm)

Type 1

A11

A13

A14

A17

VCC

* RESET

A16

A15

A12

A10

I/O7

I/O6

I/O5

I/O4

I/O3

GND

I/O2

I/O1

I/O0

*Note: This pin is a DC on the AT49F002(N)(T).

Summary of content (17 pages)

PAGE 1
Features • Single-voltage Operation • • • • • • • • • – 5V Read – 5V Reprogramming Fast Read Access Time - 55 ns Internal Program Control and Timer Sector Architecture – One 16K Byte Boot Block with Programming Lockout – Two 8K Byte Parameter Blocks – Two Main Memory Blocks (96K, 128K Bytes) Fast Erase Cycle Time - 10 seconds Byte-by-byte Programming - 10 µs/Byte Typical Hardware Data Protection DATA Polling for End of Program Detection Low Power Dissipation – 50 mA Active Current – 100 µA CMOS Standby Cu
PAGE 2
When the device is deselected, the CMOS standby current is less than 100 µA. For the AT49F002N(T) pin 1 for the DIP and PLCC packages and pin 9 for the TSOP package are don’t connect pins. To allow for simple in-system reprogrammability, the AT49F002(N)(T) does not require high input voltages for programming. Five-volt-only commands determine the read and programming operation of the device.
PAGE 3
AT49F002(N)(T) Device Operation READ: The AT49F002(N)(T) 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 CE or OE is high. This dual-line control gives designers flexibility in preventing bus contention.
PAGE 4
range of the boot block is 3C000 to 3FFFF for the AT49F002(N)T. Once the feature is enabled, the data in the boot block can no longer be erased or programmed with input voltage levels of 5.5V or less. Data in the main memory block can still be changed through the regular programming method. To activate the lockout feature, a series of six program commands to specific addresses with specific data must be performed. Please refer to the Command Definitions table.
PAGE 5
AT49F002(N)(T) Command Definition (in Hex)(1) Command Sequence 1st Bus Cycle Bus Cycles Addr Data Read 1 Addr DOUT Chip Erase 6 5555 AA 2nd Bus Cycle 3rd Bus Cycle 4th Bus Cycle 6th Bus Cycle Addr Data Addr Data Addr Data Addr Data Addr Data 2AAA 55 5555 80 5555 AA 2AAA 55 5555 10 2AAA 55 SA (4) 30 2AAA 55 5555 40 Sector Erase 6 5555 AA 2AAA 55 5555 80 5555 AA Byte Program 4 5555 AA 2AAA 55 5555 A0 Addr DIN Boot Block Lockout(2) 6 5555 AA
PAGE 6
DC and AC Operating Range Operating Temperature (Case) AT49F002(N)(T)-55 AT49F002(N)(T)-70 AT49F002(N)(T)-90 AT49F002(N)(T)-12 0°C - 70°C 0°C - 70°C 0°C - 70°C 0°C - 70°C -40°C - 85°C -40°C - 85°C -40°C - 85°C -40°C - 85°C 5V ± 10% 5V ± 10% 5V ± 10% 5V ± 10% Com. Ind.
PAGE 7
AT49F002(N)(T) AC Read Characteristics AT49F002(N)(T) -55 Symbol Parameter tACC Min -70 Max Min -90 Max Min -12 Max Min Max Units Address to Output Delay 55 70 90 120 ns (1) CE to Output Delay 55 70 90 120 ns tOE(2) OE to Output Delay 0 30 0 35 0 40 0 50 ns CE or OE to Output Float 0 25 0 25 0 25 0 30 ns Output Hold from OE, CE or Address, whichever occurred first 0 tCE tDF (3)(4) tOH 0 0 0 ns AC Read Waveforms (1)(2)(3)(4) ADDRESS ADDRESS VALID CE
PAGE 8
AC Byte Load Characteristics Symbol Parameter Min tAS, tOES Address, OE Set-up Time 0 ns tAH Address Hold Time 50 ns tCS Chip Select Set-up Time 0 ns tCH Chip Select Hold Time 0 ns tWP Write Pulse Width (WE or CE) 90 ns tDS Data Set-up Time 50 ns tDH, tOEH Data, OE Hold Time 0 ns tWPH Write Pulse Width High 90 ns AC Byte Load Waveforms WE Controlled OE tOES tOEH ADDRESS CE WE tAS tAH tCH tCS tWPH tWP tDH tDS DATA IN CE Controlled OE tOES tOEH ADDRESS tAS tAH t
PAGE 9
AT49F002(N)(T) Program Cycle Characteristics Symbol Parameter Min Typ Max Units tBP Byte Programming Time 10 50 µs tAS Address Set-up Time 0 ns tAH Address Hold Time 50 ns tDS Data Set-up Time 50 ns tDH Data Hold Time 0 ns tWP Write Pulse Width 90 ns tWPH Write Pulse Width High 90 ns tEC Erase Cycle Time 10 seconds Program Cycle Waveforms Sector or Chip Erase Cycle Waveforms Notes: 1. OE must be high only when WE and CE are both low. 2.
PAGE 10
Data Polling Characteristics(1) Symbol Parameter Min tDH Data Hold Time 10 ns tOEH OE Hold Time 10 ns Max (2) tOE OE to Output Delay tWR Write Recovery Time Notes: Typ Units ns 0 ns 1. These parameters are characterized and not 100% tested. 2. See tOE spec in AC Read Characteristics.
PAGE 11
AT49F002(N)(T) Software Product Identification Entry(1) LOAD DATA AA TO ADDRESS 5555 LOAD DATA AA TO ADDRESS 5555 LOAD DATA 55 TO ADDRESS 2AAA LOAD DATA 55 TO ADDRESS 2AAA LOAD DATA 90 TO ADDRESS 5555 LOAD DATA 80 TO ADDRESS 5555 ENTER PRODUCT IDENTIFICATION MODE(2)(3)(5) LOAD DATA AA TO ADDRESS 5555 Software Product Identification Exit(1) LOAD DATA AA TO ADDRESS 5555 LOAD DATA 55 TO ADDRESS 2AAA OR Boot Block Lockout Feature Enable Algorithm(1) LOAD DATA F0 TO ANY ADDRESS EXIT PRODUCT IDENTIFICA
PAGE 12
AT49F002 Ordering Information ICC (mA) tACC (ns) Active Standby Ordering Code Package 55 50 0.1 AT49F002-55JC AT49F002-55PC AT49F002-55TC AT49F002-55VC 32J 32P6 32T 32V Commercial (0° to 70°C) 50 0.3 AT49F002-55JI AT49F002-55PI AT49F002-55TI AT49F002-55VI 32J 32P6 32T 32V Industrial (-40° to 85°C) 50 0.1 AT49F002-70JC AT49F002-70PC AT49F002-70TC AT49F002-70VC 32J 32P6 32T 32V Commercial (0° to 70°C) 50 0.
PAGE 13
AT49F002(N)(T) AT49F002N Ordering Information ICC (mA) tACC (ns) Active Standby Ordering Code Package 55 50 0.1 AT49F002N-55JC AT49F002N-55PC AT49F002N-55TC AT49F002N-55VC 32J 32P6 32T 32V Commercial (0° to 70°C) 50 0.3 AT49F002N-55JI AT49F002N-55PI AT49F002N-55TI AT49F002N-55VI 32J 32P6 32T 32V Industrial (-40° to 85°C) 50 0.1 AT49F002N-70JC AT49F002N-70PC AT49F002N-70TC AT49F002N-70VC 32J 32P6 32T 32V Commercial (0° to 70°C) 50 0.
PAGE 14
AT49F002T Ordering Information ICC (mA) tACC (ns) Active Standby Ordering Code Package 55 50 0.1 AT49F002T-55JC AT49F002T-55PC AT49F002T-55TC AT49F002T-55VC 32J 32P6 32T 32V Commercial (0° to 70°C) 50 0.3 AT49F002T-55JI AT49F002T-55PI AT49F002T-55TI AT49F002T-55VI 32J 32P6 32T 32V Industrial (-40° to 85°C) 50 0.1 AT49F002T-70JC AT49F002T-70PC AT49F002T-70TC AT49F002T-70VC 32J 32P6 32T 32V Commercial (0° to 70°C) 50 0.
PAGE 15
AT49F002(N)(T) AT49F002NT Ordering Information ICC (mA) tACC (ns) Active Standby Ordering Code Package 55 50 0.1 AT49F002NT-55JC AT49F002NT-55PC AT49F002NT-55TC AT49F002NT-55VC 32J 32P6 32T 32V Commercial (0° to 70°C) 50 0.3 AT49F002NT-55JI AT49F002NT-55PI AT49F002NT-55TI AT49F002NT-55VI 32J 32P6 32T 32V Industrial (-40° to 85°C) 50 0.1 AT49F002NT-70JC AT49F002NT-70PC AT49F002NT-70TC AT49F002NT-70VC 32J 32P6 32T 32V Commercial (0° to 70°C) 50 0.
PAGE 16
Packaging Information 32J, 32-lead, Plastic J-leaded Chip Carrier (PLCC) Dimensions in Inches and (Millimeters) JEDEC STANDARD MS-016 AE .045(1.14) X 45˚ PIN NO. 1 IDENTIFY .050(1.27) TYP 1.67(42.4) 1.64(41.7) .025(.635) X 30˚ - 45˚ .012(.305) .008(.203) .553(14.0) .547(13.9) .595(15.1) .585(14.9) .032(.813) .026(.660) 32P6, 32-pin, 0.600" Wide, Plastic Dual Inline Package (PDIP) Dimensions in Inches and (Millimeters) .300(7.62) REF .430(10.9) .390(9.90) AT CONTACT POINTS PIN 1 .530(13.5) .
PAGE 17
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