W29C020CP90B Winbond Electronics, W29C020CP90B Datasheet
W29C020CP90B
Specifications of W29C020CP90B
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W29C020CP90B Summary of contents
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... GENERAL DESCRIPTION The W29C020C 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 the W29C020C results in fast write (erase/program) PP operations with extremely low current consumption compared to other comparable 5-volt flash memory products ...
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PIN CONFIGURATIONS A16 3 30 A15 4 29 A12 32-pin 8 DIP ...
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... In the internal write cycle, all data in the page buffers, i.e., 128 bytes of data, are written simultaneously into the memory array. Before the completion of the internal write cycle, the host is free to perform other tasks such as fetching data from other locations in the system to prepare to write the next page. ...
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... There are two boot blocks (8K bytes each) in this device, which can be used to store boot code. One of them is located in the first 8K bytes and the other is located in the last 8K bytes of the memory. The first 8K or last 8K of the memory can be set as a boot block by using a seven-byte command sequence ...
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Toggle Bit (DQ6)- Write Status Detection In addition to data polling, the W29C020C 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 TO ENABLE PROTECTION ADDRESS 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 ...
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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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Command Codes for Product Identification and Boot Block Lockout Detection BYTE ALTERNATE PRODUCT (7) SEQUENCE IDENTIFICATION/BOOT BLOCK LOCKOUT DETECTION ENTRY ADDRESS 0 Write 5555 1 Write 2AAA 2 Write 5555 3 Write - 4 Write - 5 Write - Pause ...
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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. DATA 5555H AAH 2AAAH 55H 5555H ...
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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 (<20 nS) on Any Pin to Ground Potential Voltage on A9 and ...
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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 ( 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 ...
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AC Characteristics, continued #DATA Polling Characteristics PARAMETER Data Hold Time #OE Hold Time (2) #OE to Output Delay Write Recovery Time Notes: (1) These parameters are characterized and not 100% tested. (2) See T spec in A.C. Read Cycle Timing ...
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Timing Waveforms, continued #WE Controlled Write Cycle Timing Diagram T Address A17-0 #CE #OE #WE DQ7-0 #CE Controlled Write Cycle Timing Diagram Address A17-0 #CE #OE #WE High Z DQ7 OES ...
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Timing Waveforms, continued Page Write Cycle Timing Diagram Address A17-0 DQ7-0 #CE #OE #WE #DATA Polling Timing Diagram Address A15-0 #WE #CE T OEH # DQ7 T BLC T WPH T WP Byte 0 Byte 1 Byte 2 ...
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Timing Waveforms, continued Toggle Bit Timing Diagram #WE #CE T OEH # DQ6 Page Write Timing Diagram Software Data Protection Mode Address A15-0 5555 DQ7-0 #CE # #WE SW0 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 DQ7-0 #CE #OE #WE Software Chip Erase Timing Diagram Address A15-0 DQ7-0 #CE #OE #WE Six-byte sequence for resetting software data protection mode 5555 5555 2AAA 5555 2AAA 55 ...
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... PART NO. ACCESS TIME (nS) W29C020C-70B 70 W29C020C-90B 90 W29C020C-12B 120 W29C020CT70B 70 W29C020CT90B 90 W29C020CT12B 120 W29C020CP70B 70 W29C020CP90B 90 W29C020CP12B 120 W29C020C90BN 90 W29C020C12BN 120 W29C020CT90N 90 W29C020CT12N 120 W29C020CP90N 90 W29C020CP12N 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 Hardware SID Read column with SID read function ...
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HOW TO READ THE TOP MARKING Example: The top marking of 32-pin TSOP W29C020CT70B W29C020CT70B 2138977A-A12 149OBSA st 1 line: Winbond logo nd 2 line: the part number: W29C020CT70B rd 3 line: the lot number th 4 line: the tracking ...
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PACKAGE DIMENSIONS 32-pin P-DIP 32-pin TSOP 0.10(0.004 Base Plane Seating Plane e ...
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Package Dimensions, continued 32-pin PLCC Seating Plane Notes ...
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... Yokohama, 222-0033 TEL: 81-45-4781881 FAX: 81-45-4781800 - 22 - W29C020C DESCRIPTION Winbond Electronics (Shanghai) Ltd. 27F, 2299 Yan An W. Rd. Shanghai, 200336 China TEL: 86-21-62365999 FAX: 86-21-62365998 Winbond Electronics (H.K.) Ltd. Unit 9-15, 22F, Millennium City, No. 378 Kwun Tong Rd., Kowloon, Hong Kong TEL: 852-27513100 FAX: 852-27552064 ...