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HY27UF082G2B Datasheet(PDF) 8 Page - Hynix Semiconductor |
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HY27UF082G2B Datasheet(HTML) 8 Page - Hynix Semiconductor |
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8 / 54 page  Rev 0.2 / Jan. 2008 8 1 HY27UF(08/16)2G2B Series 2Gbit (256Mx8bit) NAND Flash 1.2 PIN DESCRIPTION Pin Name Description IO0-IO7 IO8-IO15(1) DATA INPUTS/OUTPUTS The IO pins allow to input command, address and data and to output data during read / program operations. The inputs are latched on the rising edge of Write Enable (WE). The I/O buffer float to High-Z when the device is deselected or the outputs are disabled. CLE COMMAND LATCH ENABLE This input activates the latching of the IO inputs inside the Command Register on the Rising edge of Write Enable (WE). ALE ADDRESS LATCH ENABLE This input activates the latching of the IO inputs inside the Address Register on the Rising edge of Write Enable (WE). CE CHIP ENABLE This input controls the selection of the device. WE WRITE ENABLE This input acts as clock to latch Command, Address and Data. The IO inputs are latched on the rise edge of WE. RE READ ENABLE The RE input is the serial data-out control, and when active drives the data onto the I/O bus. Data is valid tREA after the falling edge of RE which also increments the internal column address counter by one. WP WRITE PROTECT The WP pin, when Low, provides an Hardware protection against undesired modify (program / erase) operations. R/B READY BUSY The Ready/Busy output is an Open Drain pin that signals the state of the memory. Vcc SUPPLY VOLTAGE The Vcc supplies the power for all the operations (Read, Write, Erase). Vss GROUND NC NO CONNECTION Table 2: Pin Description NOTE: 1. For x16 version only 2. A 0.1uF capacitor should be connected between the Vcc Supply Voltage pin and the Vss Ground pin to decouple the current surges from the power supply. The PCB track widths must be sufficient to carry the currents required during program and erase operations. 3. An internal voltage detector disables all functions whenever VCC is below 1.8V (3.3V version) to protect the device from any involuntary program/erase during power transitions. |
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