W49F201S-45B WINBOND [Winbond], W49F201S-45B Datasheet
W49F201S-45B
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W49F201S-45B Summary of contents
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... GENERAL DESCRIPTION The W49F201 is a 2-megabit, 5-volt only CMOS flash memory organized as 128K device can be programmed and erased in-system with a standard 5V power supply. A 12-volt V not required. The unique cell architecture of the W49F201 results in fast program/erase operations with extremely low current consumption (compared to other comparable 5-volt flash memory products) ...
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PIN CONFIGURATIONS 44-pin A2 9 SOP GND DQ0 15 DQ8 16 DQ1 17 DQ9 18 ...
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FUNCTIONAL DESCRIPTION Read Mode The read operation of the W49F201 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 CE ...
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The host system is not required to provide any control or timing during this operation. The entire memory array will be erased to FF(hex). by the chip erase operation if the boot block ...
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Toggle Bit (DQ )- Write Status Detection 6 In addition to data polling, the W49F201 provides another method for determining the end of a program cycle. During the internal program or erase cycle, any consecutive attempts to read DQ produce ...
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TABLE OF COMMAND DEFINITION COMMAND NO. OF 1ST CYCLE 2ND CYCLE 3RD CYCLE 4TH CYCLE 5TH CYCLE 6TH CYCLE Cycles DESCRIPTION Read 1 Chip Erase 6 Main Memory Erase 6 Word Program 4 Boot Block Lockout 6 Product ID Entry ...
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Command Codes for Word Program WORD SEQUENCE 0 Write 1 Write 2 Write 3 Write Word Program Flow Chart Notes for software program code: Data Format: DQ15 DQ8: Don't Care; DQ7-DQ0 (Hex) Address Format: A14 A0 (Hex) *It is not ...
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Command Codes for Chip Erase BYTE SEQUENCE 1 Write 2 Write 3 Write 4 Write 5 Write 6 Write Chip Erase Acquisition Flow Notes for chip erase: Data Format: DQ15-DQ8: Don't Care; DQ7 DQ0 (Hex) Address Format: A14 A0 (Hex) ...
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Command Codes for Sector Erase BYTE SEQUENCE 1 Write 2 Write 3 Write 4 Write 5 Write 6 Write Sector Erase Acquisition Flow Notes for chip erase: Data Format: DQ15-DQ8: Don't Care; 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 (6) SEQUENCE IDENTIFICATION/BOOT BLOCK LOCKOUT DETECTION ENTRY ADDRESS 1 Write 5555 2 Write 2AAA 3 Write 5555 Software Product Identification and Boot Block Lockout Detection Acquisition Flow ...
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Command Codes for Boot Block Lockout Enable BYTE SEQUENCE 1 Write 2 Write 3 Write 4 Write 5 Write 6 Write Boot Block Lockout Enable Acquisition Flow Notes for boot block lockout enable: Data Format: DQ15-DQ8 Don't Care), DQ7 DQ0 ...
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DC CHARACTERISTICS Absolute Maximum Ratings PARAMETER Power Supply Voltage to V Potential ss Operating Temperature Storage Temperature D.C. Voltage on Any Pin to Ground Potential except OE Transient Voltage (< Any Pin to Ground Potential Voltage on ...
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Power-up Timing PARAMETER Power-up to Read Operation Power-up to Write Operation CAPACITANCE (V = 5.0V MHz PARAMETER I/O Pin Capacitance Input Capacitance AC CHARACTERISTICS AC Test Conditions PARAMETER Input Pulse Levels ...
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AC Characteristics, continued Read Cycle Timing Parameters ( PARAMETER Read Cycle Time Chip Enable Access Time Address Access Time Output Enable Access Time CE ...
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AC Characteristics, continued Data Polling and Toggle Bit Timing Parameters PARAMETER OE to Data Polling Output Delay CE to Data Polling Output Delay WE High to OE Low for Data Polling OE to Toggle Bit Output Delay CE to Toggle ...
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TIMING WAVEFORMS Read Cycle Timing Diagram Address A16 High-Z DQ15-0 Controlled Command Write Cycle Timing Diagram WE Address A16 DQ15-0 Preliminary W49F201 OLZ T CLZ ...
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Timing Waveforms, continued Controlled Command Write Cycle Timing Diagram CE Address A16 DQ15-0 Program Cycle Timing Diagram Address A16-0 DQ15 *Note not allowed to assert read operation(CE# &OE# are both ...
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Timing Waveforms, continued Polling Timing Diagram DATA Address A16 DQ7 Toggle Bit Timing Diagram Address A16 DQ6 CEP T OEHP T OEP OEHT ...
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Timing Waveforms, continued Boot Block Lockout Enable Timing Diagram Address A16-0 DQ15 Chip Erase Timing Diagram Address A16-0 DQ15 Six-word code for Boot Block Lockout Feature Enable 5555 5555 2AAA 5555 2AAA XX80 XXAA ...
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Timing Waveforms, continued Sector Erase Timing Diagram Address A16-0 DQ15 *Note not allowed to assert read operation(CE# &OE# are both active) during the Reset Timing Diagram CE OE RESET Six-word code for 5V-only software Main ...
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... ACCESS TIME (nS) W49F201S-45 45 W49F201S-55 55 W49F201T-45 45 W49F201T-55 55 W49F201S-45B 45 W49F201S-55B 55 W49F201T-45B 45 W49F201T-55B 55 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 48-pin TSOP ( mm 44-pin SOP SEATING PLANE ...
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VERSION HISTORY VERSION DATE A1 Jun. 1999 Headquarters No. 4, Creation Rd. III, Science-Based Industrial Park, Hsinchu, Taiwan TEL: 886-3-5770066 FAX: 886-3-5796096 http://www.winbond.com.tw/ Voice & Fax-on-demand: 886-2-27197006 Taipei Office 11F, No. 115, Sec. 3, Min-Sheng East Rd., Taipei, Taiwan TEL: ...