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DD28F032SA-070 Datasheet(PDF) 8 Page - Intel Corporation |
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DD28F032SA-070 Datasheet(HTML) 8 Page - Intel Corporation |
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8 / 49 page  DD28F032SA E 8 2.1 Lead Descriptions Symbol Type Name and Function A0 INPUT BYTE-SELECT ADDRESS: Selects between high and low byte when device is in x8 mode. This address is latched in x8 data programs. Not used in x16 mode (i.e., the A0 input buffer is turned off when BYTE# is high). A1–A15 INPUT WORD-SELECT ADDRESSES: Select a word within one 64-Kbyte block. A6-15 selects 1 of 1024 rows, and A1-5 selects 16 of 512 columns. These addresses are latched during data programs. A16–A20 INPUT BLOCK-SELECT ADDRESSES: Select 1 of 32 erase blocks in each of the two 28F016SAs. These addresses are latched during data programs, block erase and lock block operations. DQ0–DQ7 INPUT/OUTPUT LOW-BYTE DATA BUS: Inputs data and commands during CUI write cycles. Outputs array, buffer, identifier or status data in the appropriate read mode. Floated when the chip is de-selected or the outputs are disabled. DQ8–DQ15 INPUT/OUTPUT HIGH-BYTE DATA BUS: Inputs data during x16 data program operations. Outputs array, buffer or identifier data in the appropriate read mode; not used for Status Register reads. Floated when the chip is de- selected or the outputs are disabled. CE0# CEX# = CE1# or CE2# INPUT CHIP ENABLE INPUTS: Activate the device’s control logic, input buffers, decoders and sense amplifiers. CE0#/CE1# enable/disable the first 28F016SA (16 Mbit No. 1) while CE0#/CE2# enable/disable the second 28F016SA (16 Mbit No. 2). CE0# active low enables chip operation while CE1# or CE2# select between the first and second device, respectively CE1# and CE2# must not be active low simultaneously. Reference Table 3.0. RP# INPUT RESET/POWER-DOWN: RP# low places the device in a deep power- down state. All circuits that burn static power, even those circuits enabled in standby mode, are turned off. When returning from deep power-down, a recovery time is required to allow these circuits to power-up. When RP# goes low, any current or pending WSM operation(s) are terminated, and the device is reset. All Status Registers return to ready (with all status flags cleared). OE# INPUT OUTPUT ENABLE: Gates device data through the output buffers when low. The outputs float to tri-state off when OE# is high. NOTE: CEx# overrides OE#, and OE# overrides WE#. WE# INPUT WRITE ENABLE: Controls access to the CUI, Page Buffers, Data Queue Registers and Address Queue Latches. WE# is active low, and latches both address and data (command or array) on its rising edge. RY/BY# OPEN DRAIN OUTPUT READY/BUSY: Indicates status of the internal WSM. When low, it indicates that the WSM is busy performing an operation. RY/BY# high indicates that the WSM is ready for new operations (or WSM has completed all pending operations), or block erase is suspended, or the device is in deep power-down mode. This output is always active (i.e., not floated to tri-state off when OE# or CE0#/CE1#/CE2# are high), except if a RY/BY# Pin Disable command is issued. |
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