Rainbow-electronics W49F002U Manuale Utente

W49F002U 256K × 8 CMOS FLASH MEMORY Publication Release Date: April 2000 - 1 - Revision A2 GENERAL DESCRIPTION The W49F002U is a 2-megabit, 5-vo

W49F002U - 10 - Command Codes for Product Identification and Boot Block Lockout Detection BYTE SEQUENCE SOFTWARE PRODUCT IDENTIFICATION/BOOT BLOCK L

W49F002U Publication Release Date: April 2000 - 11 - Revision A2 Command Codes for Boot Block Lockout Enable BYTE SEQUENCE ADDRESS DATA 0 Wr

W49F002U - 12 - DC CHARACTERISTICS Absolute Maximum Ratings PARAMETER RATING UNIT Power Supply Voltage to Vss Potential -0.5 to +7.0 V Operating T

W49F002U Publication Release Date: April 2000 - 13 - Revision A2 Power-up Timing PARAMETER SYMBOL TYPICAL UNIT Power-up to Read Operation TPU

W49F002U - 14 - AC Characteristics, continued Read Cycle Timing Parameters (VCC = 5.0V ±10%, VCC = 0V, TA = 0 to 70° C) PARAMETER SYM. W49F002U-70 W

W49F002U Publication Release Date: April 2000 - 15 - Revision A2 AC Characteristics, continued Data Polling and Toggle Bit Timing Parameters P

W49F002U - 16 - Timing Waveforms, continued WE Controlled Command Write Cycle Timing Diagram Address A17-0DQ7-0Data ValidCEOEWETASTCSTOESTAHTCHTOEH

W49F002U Publication Release Date: April 2000 - 17 - Revision A2 Timing Waveforms, continued Program Cycle Timing Diagram Address A17-0Byte 0

W49F002U - 18 - Timing Waveforms, continued Toggle Bit Timing Diagram Address A17-0DQ6 CEOEWETOEH TOESTBP orTEC Boot Block Lockout Enable Timing Dia

W49F002U Publication Release Date: April 2000 - 19 - Revision A2 Timing Waveforms, continued Chip Erase Timing Diagram SB2SB1 SB0Address A17-0

W49F002U - 2 - PIN CONFIGURATIONS 1234567891011121314151632313029282726252423222120191817DQ0DQ1DQ2GNDA7A6A5A4A3A2A1A0A16A15A12VWEA14A13A8A9A11OEA10

W49F002U - 20 - ORDERING INFORMATION PART NO. ACCESS TIME (nS) POWER SUPPLY CURRENT MAX. (mA) STANDBY VDD CURRENT MAX. (µA) PACKAGE CYCLE W4

W49F002U Publication Release Date: April 2000 - 21 - Revision A2 PACKAGE DIMENSIONS 32-pin P-DIP 1.Dimensions D Max. & S include mold flas

W49F002U - 22 - Package Dimensions, continued 32-pin TSOP AAA21LL1YcEHDDbeM0.10(0.004)θMin. Nom.Max.Min. Nom.Max.SymbolAAbcDEeLLY112AHD Note:Contr

W49F002U Publication Release Date: April 2000 - 23 - Revision A2 VERSION HISTORY VERSION DATE PAGE DESCRIPTION A1 Nov. 1999 - Renamed fro

W49F002U Publication Release Date: April 2000 - 3 - Revision A2 FUNCTIONAL DESCRIPTION Read Mode The read operation of the W49F002U is control

W49F002U - 4 - operation if the boot block programming lockout feature is not activated. Once the boot block lockout feature is activated, the whol

W49F002U Publication Release Date: April 2000 - 5 - Revision A2 Toggle Bit (DQ6)- Write Status Detection In addition to data polling, the W49F

W49F002U - 6 - TABLE OF COMMAND DEFINITION(1) COMMAND NO. OF 1ST CYCLE 2ND CYCLE 3RD CYCLE 4TH CYCLE 5TH CYCLE 6TH CYCLE DESCRIPTION Cycles Addr

W49F002U Publication Release Date: April 2000 - 7 - Revision A2 Command Codes for Byte Program COMMAND SEQUENCE ADDRESS DATA 0 Write 5555H

W49F002U - 8 - Command Codes for Chip Erase BYTE SEQUENCE ADDRESS DATA 1 Write 5555H AAH 2 Write 2AAAH 55H 3 Write 5555H 80H 4 Wr

W49F002U Publication Release Date: April 2000 - 9 - Revision A2 Command Codes for Sector Erase BYTE SEQUENCE ADDRESS DATA 1 Write 5555H A