W27C520W-90 Winbond, W27C520W-90 Datasheet
W27C520W-90
Related parts for W27C520W-90
W27C520W-90 Summary of contents
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ELECTRICALLY ERASABLE EPROM GENERAL DESCRIPTION The W27C520 is a high speed, low power Electrically Erasable and Programmable Read Only Memory organized as 65,536 8 bits. It includes latches for the lower 8 address lines to multiplex with the ...
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FUNCTIONAL DESCRIPTION Read Mode Unlike conventional UVEPROMs, which has CE and OE two control functions, the W27C520 has one OE /V and one ALE (address_latch_enable) control functions. The ALE makes lower PP address A[7: latched in the chip ...
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System Considerations An EPROM's power switching characteristics require careful device decoupling. System designers are interested in three supply current issues: standby current levels (I transient current peaks produced by the falling and rising edges of ALE Transient current magnitudes depend ...
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DC CHARACTERISTICS Absolute Maximum Ratings PARAMETER Ambient Temperature with Power Applied Storage Temperature Voltage on all Pins with Respect to Ground Except and V Pins PP, DD Voltage Pin with Respect to Ground PP ...
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CAPACITANCE (V = 3.0V to 3.6V or 4.5V to 5.5V PARAMETER Input Capacitance Output Capacitance AC CHARACTERISTICS AC Test Conditions PARAMETER Input Pulse Levels Input Rise and Fall Times Input and Output Timing Reference Level Output Load AC ...
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READ OPERATION DC CHARACTERISTICS (V = 3.0V to 3.6V or 4.5V to 5.5V PARAMETER SYM. Input Load Current I LI Output Leakage Current I LO Standby V Current (CMOS input) V Operating Current I DD ...
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DC PROGRAMMING CHARACTERISTICS (V = 6.5V 0.25V PARAMETER Input Load Current V Program Current DD V Program Current PP Input Low Voltage Input High Voltage Output Low Voltage (Verify) Output High Voltage ...
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TIMING WAVEFORMS AC Read Waveform V IH A8-A15 ALE OE/Vpp V IL High Z AD0-AD7 Programming Waveform V IH A[15: RPT 13V V IH OE/Vpp ...
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Timing Waveforms, continued Erase Waveform 1 Read Company SID V IH A[15: AD[7: 13. OE/Vpp ALE V IL Erase Waveform 2 Read Read Company Device SID SID V ...
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SMART PROGRAMMING ALGORITHM 1 Increment No Address Increment Address No Last Address ? Yes Power Down Start Address = First Location V = 6.5V DD OE/Vpp = 13V Program One 50 S Pulse Last Address ? Yes Address = First ...
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SMART PROGRAMMING ALGORITHM 2 Increment Address Preliminary W27C520 Start Address = First Location Program One 50 S Pulse OE/Vpp = 13V Increment X Yes X = 25? No Fail Verify One Byte OE/Vpp ...
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SMART ERASE ALGORITHM 1 Increment Address Preliminary W27C520 Start 6.5V DD OE/Vpp = 13V A9 = 13V; A8&A11 = V IL A10 = V IH Chip Erase 100 mS Pulse Address = First Location Increment ...
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SMART ERASE ALGORITHM 2 with Address = 2AAA(Hex) Data = 10(Hex) Increment Address Start 6.5V DD OE/Vpp = 13V Program One 50 S Pulse with Address = 5555(Hex) Data = AA(Hex) Program One 100 mS ...
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... ORDERING INFORMATION PART NO. ACCESS TIME (nS) W27C520W-70* 70 W27C520W-90* 90 W27C520S-70* 70 W27C520S-90* 90 Notes: 1. The Part No is preliminary and might be changed after project is consoled. 2. Winbond reserves the right to make changes to its products without prior notice. 3. Purchasers are responsible for performing appropriate quality assurance testing on products intended for use in applications where personal injury might occur as a consequence of product failure ...
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PACKAGE DIMENSIONS 20-pin TSSOP 20-pin SOP Preliminary W27C520 Dimension in Inches Dimension in mm Symbol ...
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... Kowloon, Hong Kong Kowloon, Hong Kong TEL: 852-27513100 TEL: 852-27513100 FAX: 852-27552064 FAX: 852-27552064 - 16 - DESCRIPTION Winbond Electronics North America Corp. Winbond Electronics North America Corp. Winbond Memory Lab. Winbond Memory Lab. Winbond Microelectronics Corp. Winbond Microelectronics Corp. Winbond Systems Lab. Winbond Systems Lab. ...