Rainbow-electronics AT29C256 User Manual

1Features• Fast Read Access Time – 70 ns• 5-volt Only Reprogramming• Page Program Operation– Single Cycle Reprogram (Erase and Program)– Internal Addr

10AT29C2560046O–FLASH–06/02Software Data ProtectionEnable Algorithm(1)Notes: 1. Data Format: I/O7 - I/O0 (Hex);Address Format: A14 - A0 (Hex).2. Data

11AT29C2560046O–FLASH–06/02Notes: 1. These parameters are characterized and not 100% tested.2. See tOEspec in AC Read Characteristics.Data Polling Wav

12AT29C2560046O–FLASH–06/02Software Product Identification Entry(1)Notes: 1. Data Format: I/O7 - I/O0 (Hex);Address Format: A14 - A0 (Hex).2. A1 - A14

13AT29C2560046O–FLASH–06/02NORMALIZED SUPPLY CURRENTvs. TEMPERATURETEMPERATURE (C)-551.41.31.21.11.00.80.9-25 5 35 65 95 125NORMALIZEDICCNORMALIZED SU

14AT29C2560046O–FLASH–06/02Ordering InformationtACC(ns)ICC(mA)Ordering Code Package Operation RangeActive Standby70 50 0.3 AT29C256-70JCAT29C256-70PCA

15AT29C2560046O–FLASH–06/02Packaging Information32J – PLCCDRAWING NO.REV. 2325 Orchard Parkway San Jose, CA 95131RTITLE32J, 32-lead, Plastic J-le

16AT29C2560046O–FLASH–06/0228P6 – PDIP 2325 Orchard Parkway San Jose, CA 95131TITLEDRAWING NO.RREV. 28P6, 28-lead (0.600"/15.24 mm Wide) Plas

17AT29C2560046O–FLASH–06/0228T – TSOP 2325 Orchard Parkway San Jose, CA 95131TITLEDRAWING NO.RREV. 28T, 28-lead (8 x 13.4 mm Package) Plastic Thin

Printed on recycled paper.© Atmel Corporation 2002.Atmel Corporation makes no warranty for the use of its products, other than those expressly contain

2AT29C2560046O–FLASH–06/02To allow for simple in-system reprogrammability, the AT29C256 does not require highinput voltages for programming. Five-volt

3AT29C2560046O–FLASH–06/02PROGRAM: Thedeviceisreprogrammedonapagebasis.Ifabyteofdatawithinapage is to be changed, data for the entire page must be loa

4AT29C2560046O–FLASH–06/02PRODUCT IDENTIFICATION: The product identification mode identifies the deviceand manufacturer and may be accessed by a hardw

5AT29C2560046O–FLASH–06/02Notes: 1. X can be VILor VIH.2. Refer to AC Programming Waveforms.3. VH= 12.0V ± 0.5V.4. Manufacturer Code: 1F, Device Code:

6AT29C2560046O–FLASH–06/02AC Read Waveforms(1)(2)(3)(4)Notes: 1. CE may be delayed up to tACC-tCEafter the address transition without impact on tACC.2

7AT29C2560046O–FLASH–06/02Input Test Waveforms and Measurement LevelOutput Test LoadNote: 1. This parameter is characterized and is not 100% tested.Pi

8AT29C2560046O–FLASH–06/02AC Byte Load WaveformsWE ControlledCEControlledAC Byte Load CharacteristicsSymbol Parameter Min Max UnitstAS,tOESAddress, OE

9AT29C2560046O–FLASH–06/02Program Cycle Waveforms(1)(2)(3)Notes: 1. A6 through A14 must specify the page address during each high-to-low transition of