Rainbow-electronics AT28C040 User Manual

1LCCTop View78910111213141516173938373635343332313029A12A7A6A5NCNCNCA4A3A2A1A13A8A9A11NCNCNCNCOEA10CE65432144434241401819202122232425262728A0I/O0I/O1I

AT28C04010Note: 1. See Valid Part Numbers.Ordering Information(1)tACC(ns)ICC (mA)Ordering Code Package Operation RangeActive Standby200 80 3 AT28C040-

AT28C04011Packaging InformationPIN #1 ID.370(9.40).270(6.86).019(.482).015(.381).050(1.27) BSC.045(1.14) MAX.120(3.05).098(2.49).045(1.14).026(.660).0

© Atmel Corporation 1998.Atmel Corporation makes no warranty for the use of its products, other than those expressly contained in the Company’s standa

AT28C0402The AT28C040 is accessed like a static RAM for the reador write cycle without the need for external components.The device contains a 256-byte

AT28C0403Device OperationREAD: The AT28C040 is accessed like a static RAM.When CE and OE are low and WE is high, the data storedat the memory location

AT28C0404Notes: 1. X can be VIL or VIH.2. Refer to AC Programming Waveforms.DC and AC Operating RangeAT28C040-20 AT28C040-25Operation OperationRead Pr

AT28C0405AC Read Waveforms(1)(2)(3)(4)Note: 1. CE May be delayed up to tACC - tCE after the address transition wihtout impact on tACC.2. OE may be del

AT28C0406AC Write WaveformsWE ControlledCE ControlledAC Write CharacteristicsSymbol Parameter Min Max UnitstAS, tOESAddress, OE Set-up Time 0 nstAHAdd

AT28C0407Page Mode Write Waveforms(1)(2)Notes: 1. A8 through A18 must specify the page address during each high to low transition of WE (or CE).2. OE

AT28C0408Software DataProtection Enable Algorithm(1)Notes: 1. Data Format: I/O7 - I/O0 (Hex);Address Format: A14 - A0 (Hex).2. Write Protect state wil

AT28C0409Notes: 1. These parameters are characterized and not 100% tested.2. See AC Read Characteristics.Data Polling WaveformsNotes: 1. These paramet