W29C020T-90B Winbond, W29C020T-90B Datasheet
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W29C020T-90B
Related parts for W29C020T-90B
W29C020T-90B Summary of contents
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GENERAL DESCRIPTION The W29C020 is a 2-megabit, 5-volt only CMOS flash memory organized as 256K device can be written (erased and programmed) in-system with a standard 5V power supply. A 12-volt V is not required. The unique cell architecture of ...
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PIN CONFIGURATIONS A16 3 30 A15 4 29 A12 32-pin DIP ...
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FUNCTIONAL DESCRIPTION Read Mode The read operation of the W29C020 is controlled by CE and OE , both of which have to be low for the host to obtain data from the outputs used for device selection. When ...
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A power transition will not reset the software data protection feature. To reset the device to unprotected mode, a six-byte command sequence is required. For information about specific codes, see the ...
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Toggle Bit (DQ6)- Write Status Detection In addition to data polling, the W29C020 provides another method for determining the end of a write cycle. During the internal write cycle, any consecutive attempts to read DQ6 will produce alternating 0's and ...
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Command Codes for Software Data Protection BYTE SEQUENCE 0 Write 1 Write 2 Write 3 Write 4 Write 5 Write Software Data Protection Acquisition Flow (Optional page-load operation) Notes for software program code: Data Format: DQ7 DQ0 (Hex) Address Format: ...
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Command Codes for Software Chip Erase BYTE SEQUENCE 0 Write 1 Write 2 Write 3 Write 4 Write 5 Write Software Chip Erase Acquisition Flow Notes for software chip erase: Data Format: DQ7 DQ0 (Hex) Address Format: A14 A0 (Hex) ...
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... The device returns to standard operation mode. (7) This product supports both the JEDEC standard 3 byte command code sequence and original 6 byte command code sequence. For new designs, Winbond recommends that the 3 byte command code sequence be used. SOFTWARE PRODUCT IDENTIFICATION/BOOT BLOCK ...
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... Feature Set on First 8K Address Boot Block Notes for boot block lockout enable: 1. Data Format: DQ7 DQ0 (Hex) 2. Address Format: A14 A0 (Hex you have any questions about this commend sequence, please contact the local distributor or Winbond Electronics Corp. ADDRESS DATA 5555H AAH ...
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DC CHARACTERISTICS Absolute Maximum Ratings PARAMETER Power Supply Voltage Operating Temperature Storage Temperature D.C. Voltage on Any Pin to Ground Potential Except A9 Transient Voltage (< Any Pin to Ground Potential Voltage on A9 ...
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Power-up Timing PARAMETER Power-up to Read Operation Power-up to Write Operation CAPACITANCE (V = 5.0V MHz PARAMETER DQ Pin Capacitance Input Pin Capacitance AC CHARACTERISTICS AC Test Conditions (V = 5.0V ...
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AC Characteristics, continued Read Cycle Timing Parameters (V = 5.0V 10 for 90 nS and 120 nS PARAMETER Read Cycle Time Chip Enable Access Time Address Access Time Output Enable Access Time CE High to High-Z Output OE ...
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AC Characteristics, continued DA TA Polling Characteristics PARAMETER Data Hold Time OE Hold Time ( Output Delay Write Recovery Time Notes: (1) These parameters are characterized and not 100% tested. (2) See T spec in A.C. Read Cycle ...
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Timing Waveforms, continued WE Controlled Write Cycle Timing Diagram T Address A17 DQ7-0 CE Controlled Write Cycle Timing Diagram Address A17 High Z DQ7 OES ...
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Timing Waveforms, continued Page Write Cycle Timing Diagram Address A17-0 DQ7 Polling Timing Diagram Address A15 DQ7 T BLC T WPH T WP Byte 0 Byte 1 Byte 2 T OEH T ...
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Timing Waveforms, continued Toggle Bit Timing Diagram DQ6 Page Write Timing Diagram Software Data Protection Mode Address A15-0 5555 DQ7 SW0 OEH T OE HIGH-Z Byte/page load Three-byte sequence ...
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Timing Waveforms, continued Reset Software Data Protection Timing Diagram Address A15-0 DQ7 Software Chip Erase Timing Diagram Address A15-0 DQ7 Six-byte sequence for resetting software data protection mode 5555 5555 2AAA 5555 2AAA 55 ...
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... W29C020-90B 90 W29C020-12B 120 W29C020S-70B 70 W29C020S-90B 90 W29C020S-12B 120 W29C020T-70B 70 W29C020T-90B 90 W29C020T-12B 120 W29C020P-70B 70 W29C020P-90B 90 W29C020P-12B 120 Notes: 1. Winbond reserves the right to make changes to its products without prior notice. 2. 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 32-pin P-DIP 32-pin SO Wide Body Seating Plane Base Plane Seating Plane e ...
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Package Dimensions, continued 32-pin PLCC Seating Plane 32-pin TSOP 0.10(0.004 ...
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... Add. pause Correct the time from Add. cycling 100 item Winbond Electronics (H.K.) Ltd. Winbond Electronics North America Corp. Winbond Memory Lab. Rm. 803, World Trade Square, Tower II, 123 Hoi Bun Rd., Kwun Tong, Winbond Microelectronics Corp. Kowloon, Hong Kong Winbond Systems Lab ...