Manual

ManualsBrandsRainbow Electronics ManualsStorageAT29C040A

Features

• Fast Read Access Time – 90 ns

• 5-volt Only Reprogramming

• Sector Program Operation

– Single Cycle Reprogram (Erase and Program)

– 2048 Sectors (256 Bytes/Sector)

– Internal Address and Data Latches for 256 Bytes

• Internal Program Control and Timer

• Hardware and Software Data Protection

• Two 16K Bytes Boot Blocks with Lockout

• FastSectorProgramCycleTime–10ms

• DATA Polling for End of Program Detection

• Low Power Dissipation

– 40mAActiveCurrent

– 100 µA CMOS Standby Current

• Typical Endurance > 10,000 Cycles

• Single 5V ± 10% Supply

• CMOS and TTL Compatible Inputs and Outputs

Description

The AT29C040A is a 5-volt only in-system Flash Programmable and Erasable Read

Only Memory (PEROM). Its 4 megabits of memory is organized as 524,288 words by

8 bits. Manufactured with Atmel’s advanced nonvolatile CMOS EEPROM technology,

the device offers access times up to 90 ns, and a low 220 mW power dissipation.

When the device is deselected, the CMOS standby current is less than 100 µA. The

device endurance is such that any sector can typically be written to in excess of

10,000 times. The programming algorithm is compatible with other devices in Atmel’s

5-volt only Flash family.

4-megabit

(512K x 8)

5-volt Only

256-byte Sector

Flash Memory

AT29C040A

Rev. 0333I–FLASH–05/02

DIP Top View

Pin Configurations

Pin Name Function

A0 - A18 Addresses

Chip Enable

Output Enable

Write Enable

I/O0 - I/O7 Data Inputs/Outputs

NC No Connect

A18

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

TSOP Top View – Type 1

I/O0

A14

A13

A11

A10

I/O7

I/O1

I/O2

GND

I/O3

I/O4

I/O5

I/O6

A12

A15

A16

A18

VCC

A17

A11

A13

A14

A17

VCC

A18

A16

A15

A12

A10

I/O7

I/O6

I/O5

I/O4

I/O3

GND

I/O2

I/O1

I/O0

Summary of content (17 pages)

PAGE 1
Features • Fast Read Access Time – 90 ns • 5-volt Only Reprogramming • Sector Program Operation • • • • • • • • • – Single Cycle Reprogram (Erase and Program) – 2048 Sectors (256 Bytes/Sector) – Internal Address and Data Latches for 256 Bytes Internal Program Control and Timer Hardware and Software Data Protection Two 16K Bytes Boot Blocks with Lockout Fast Sector Program Cycle Time – 10 ms DATA Polling for End of Program Detection Low Power Dissipation – 40 mA Active Current – 100 µA CMOS Standby Current
PAGE 2
To allow for simple in-system reprogrammability, the AT29C040A does not require high input voltages for programming. Five-volt-only commands determine the operation of the device. Reading data out of the device is similar to reading from an EPROM. Reprogramming the AT29C040A is performed on a sector basis; 256 bytes of data are loaded into the device and then simultaneously programmed.
PAGE 3
AT29C040A SOFTWARE DATA PROTECTION: A software controlled data protection feature is available on the AT29C040A. Once the software protection is enabled a software algorithm must be issued to the device before a program may be performed. The software protection feature may be enabled or disabled by the user; when shipped from Atmel, the software data protection feature is disabled.
PAGE 4
BOOT BLOCK PROGRAMMING LOCKOUT: The AT29C040A has two designated memory blocks that have a programming lockout feature. This feature prevents programming of data in the designated block once the feature has been enabled. Each of these blocks consists of 16K bytes; the programming lockout feature can be set independently for either block. While the lockout feature does not have to be activated, it can be activated for either or both blocks. These two 16K memory sections are referred to as boot blocks.
PAGE 5
AT29C040A DC and AC Operating Range Operating Temperature (Case) Com. Ind. VCC Power Supply Note: AT29C040A-90 AT29C040A-12 AT29C040A-15 AT29C040A-20 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% Not recommended for New Designs.
PAGE 6
AC Read Characteristics AT29C040A-90 Symbol Parameter tACC Min Max AT29C040A-12 Min Max AT29C040A-15 Min Max AT29C040A-20 Min Max Units Address to Output Delay 90 120 150 200 ns (1) CE to Output Delay 90 120 150 200 ns tOE(2) OE to Output Delay 0 40 0 50 0 70 0 80 ns CE or OE to Output Float 0 25 0 30 0 40 0 50 ns Output Hold from OE, CE or Address, whichever occurred first 0 tCE tDF (3)(4) tOH Note: 0 0 0 ns Not recommended for New Designs.
PAGE 7
AT29C040A Input Test Waveforms and Measurement Level tR, t F < 5 ns Output Test Load Pin Capacitance f = 1 MHz, T = 25°C(1) Symbol CIN COUT Note: Typ Max Units Conditions 4 6 pF VIN = 0V 8 12 pF VOUT = 0V 1. This parameter is characterized and is not 100% tested.
PAGE 8
AC Byte Load Characteristics Symbol Parameter Min Max Units tAS, tOES Address, OE Setup Time 10 ns tAH Address Hold Time 50 ns tCS Chip Select Setup Time 0 ns tCH Chip Select Hold Time 0 ns tWP Write Pulse Width (WE or CE) 90 ns tDS Data Setup Time 50 ns tDH, tOEH Data, OE Hold Time 10 ns tWPH Write Pulse Width High 100 ns AC Byte Load Waveforms(1) WE Controlled CE Controlled Note: 8 1.
PAGE 9
AT29C040A Program Cycle Characteristics Symbol Parameter Min Max Units tWC Write Cycle Time 10 ms tAS Address Setup Time 10 ns tAH Address Hold Time 50 ns tDS Data Setup Time 50 ns tDH Data Hold Time 10 ns tWP Write Pulse Width 90 ns tBLC Byte Load Cycle Time tWPH Write Pulse Width High 150 100 µs ns Program Cycle Waveforms(1)(2)(3) Notes: 1. A8 through A18 must specify the sector address during each high to low transition of WE (or CE). 2.
PAGE 10
Software Data Protection Enable Algorithm(1) Software Data Protection Disable Algorithm(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 A0 TO ADDRESS 5555 WRITES ENABLED LOAD DATA 80 TO ADDRESS 5555 LOAD DATA TO PAGE (256 BYTES)(4) ENTER DATA PROTECT STATE(2) LOAD DATA AA TO ADDRESS 5555 LOAD DATA 55 TO ADDRESS 2AAA Notes: 1. Data Format: I/O7 - I/O0 (Hex); Address Format: A14 - A0 (Hex). 2.
PAGE 11
AT29C040A Data Polling Characteristics(1) Symbol Parameter tDH Data Hold Time tOEH OE Hold Time tOE tWR Notes: OE to Output Delay Min Typ Max 10 ns 10 ns (2) Write Recovery Time 1. These parameters are characterized and not 100% tested. 2. See tOE spec in AC Read Characteristics.
PAGE 12
Software Product Identification Entry(1) LOAD DATA AA TO ADDRESS 5555 Boot Block Lockout Feature Enable Algorithm(1) LOAD DATA AA TO ADDRESS 5555 LOAD DATA 55 TO ADDRESS 2AAA LOAD DATA 55 TO ADDRESS 2AAA LOAD DATA 90 TO ADDRESS 5555 PAUSE 10 mS 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 55 TO ADDRESS 2AAA LOAD DATA AA TO ADDRESS 5555 LOAD DATA 40 TO ADDRESS 5555 LOAD DATA 55 TO ADDRESS 2AA
PAGE 13
AT29C040A Ordering Information ICC (mA) tACC (ns) Active Standby 90 40 120 150 200 Note: Ordering Code Package Operation Range 0.1 AT29C040A-90JC AT29C040A-90PC AT29C040A-90TC 32J 32P6 32T Commercial (0° to 70°C) 40 0.3 AT29C040A-90JI AT29C040A-90PI AT29C040A-90TI 32J 32P6 32T Industrial (-40° to 85°C) 40 0.1 AT29C040A-12JC AT29C040A-12PC AT29C040A-12TC 32J 32P6 32T Commercial (0° to 70°C) 40 0.
PAGE 14
Packaging Information 32J – PLCC 1.14(0.045) X 45˚ PIN NO. 1 IDENTIFIER 1.14(0.045) X 45˚ 0.318(0.0125) 0.191(0.0075) E1 E2 B1 E B e A2 D1 A1 D A 0.51(0.020)MAX 45˚ MAX (3X) COMMON DIMENSIONS (Unit of Measure = mm) D2 Notes: 1. This package conforms to JEDEC reference MS-016, Variation AE. 2. Dimensions D1 and E1 do not include mold protrusion. Allowable protrusion is .010"(0.254 mm) per side.
PAGE 15
AT29C040A 32P6 – PDIP D PIN 1 E1 A SEATING PLANE A1 L B B1 e E 0º ~ 15º C COMMON DIMENSIONS (Unit of Measure = mm) REF SYMBOL eB Note: 1. Dimensions D and E1 do not include mold Flash or Protrusion. Mold Flash or Protrusion shall not exceed 0.25 mm (0.010"). MIN NOM MAX A – – 4.826 A1 0.381 – – D 41.783 – 42.291 E 15.240 – 15.875 E1 13.462 – 13.970 B 0.356 – 0.559 B1 1.041 – 1.651 L 3.048 – 3.556 C 0.203 – 0.381 eB 15.494 – 17.
PAGE 16
32T – TSOP Type 1 PIN 1 0º ~ 8º c Pin 1 Identifier D1 D L b e L1 A2 E A GAGE PLANE SEATING PLANE COMMON DIMENSIONS (Unit of Measure = mm) A1 MIN NOM MAX A – – 1.20 A1 0.05 – 0.15 A2 0.95 1.00 1.05 D 19.80 20.00 20.20 D1 18.30 18.40 18.50 Note 2 E 7.90 8.00 8.10 Note 2 L 0.50 0.60 0.70 SYMBOL Notes: 1. This package conforms to JEDEC reference MO-142, Variation BD. 2. Dimensions D1 and E do not include mold protrusion. Allowable protrusion on E is 0.
PAGE 17
Atmel Headquarters Atmel Operations Corporate Headquarters Memory 2325 Orchard Parkway San Jose, CA 95131 TEL 1(408) 441-0311 FAX 1(408) 487-2600 Europe Atmel Sarl Route des Arsenaux 41 Case Postale 80 CH-1705 Fribourg Switzerland TEL (41) 26-426-5555 FAX (41) 26-426-5500 Asia Room 1219 Chinachem Golden Plaza 77 Mody Road Tsimshatsui East Kowloon Hong Kong TEL (852) 2721-9778 FAX (852) 2722-1369 Japan 9F, Tonetsu Shinkawa Bldg.