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X84160IG-2.5 Datasheet(PDF) 2 Page - IC MICROSYSTEMS |
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X84160IG-2.5 Datasheet(HTML) 2 Page - IC MICROSYSTEMS |
2 / 22 page X84160/640/128 2 PIN DESCRIPTIONS Chip Enable (CE) The Chip Enable input must be LOW to enable all read/ write operations. When CE is HIGH, the chip is dese- lected, the I/O pin is in the high impedance state, and unless a nonvolatile write operation is underway, the device is in the standby power mode. Output Enable (OE) The Output Enable input must be LOW to enable the out- put buffer and to read data from the device on the I/O line. Write Enable (WE) The Write Enable input must be LOW to write either data or command sequences to the device. Data In/Data Out (I/O) Data and command sequences are serially written to or serially read from the device through the I/O pin. Write Protect (WP) The Write Protect input controls the Hardware Write Pro- tect feature. When WP is LOW and the nonvoltaile bit WPEN is “1”, nonvolatile writes of the X84160/640/128 control register is disabled, but the part otherwise func- tions normally. When WP is held HIGH, all functions, including nonvolatile write operate normally. WP going LOW while CS is still LOW will interrupt a write to the X84160/640/128 control register. If the internal Write cycle has already been initiated, WP going LOW will have no effect on write. The WP pin function is blocked when the WPEN bit in the control register is “0”. This allows the user to install the X84160/640/128 in a system with WP pin grounded and still be able to write to the control register. The WP pin functions will be enabled when the WPEN bit is set “1”. PIN CONFIGURATIONS: Drawings are to the same scale, actual package sizes are shown in inches: VCC NC OE WE CE I/O WP VSS 1 2 3 4 8 7 6 5 8-LEAD SOIC 1 2 3 4 5 6 7 8 14 13 12 11 10 9 14-LEAD SOIC CE I/O NC NC NC WP VSS V CC NC NC NC NC OE WE PIN NAMES I/O Data Input/Output CE Chip Enable Input OE Output Enable Input WE Write Enable Input WP Write Protect Input VCC Supply Voltage VSS Ground NC No Connect PACKAGE SELECTION GUIDE 84160 8-Lead PDIP 8-Lead SOIC 8-Lead TSSOP 84640 8-Lead CSP/BGA 8-Lead PDIP 8-Lead SOIC 20-Lead TSSOP 84128 8-Lead CSP/BGA 8-Lead PDIP 14-Lead SOIC 28-Lead TSSOP 1 2 3 4 5 6 7 20 19 18 17 16 15 14 20-LEAD TSSOP CE I/O NC NC NC WP VSS VCC NC NC NC NC OE WE 8 9 10 13 12 11 NC NC NC NC NC NC 1 2 3 4 5 6 7 20 19 18 17 16 15 28-LEAD TSSOP NC NC WP VSS NC NC NC OE WE NC NC 8 9 10 I/O CE NC VCC NC NC CE CE NC NC NC NC NC NC 11 12 13 14 21 22 23 24 25 26 27 28 X84160 X84640 X84128 .190 in. .230 in. .230 in. .390 in. .250 in. .394 in. .252 in. . 252 in. X84128 X84640 NC NC NC OE NC VCC CE I/O 1 2 3 4 8 7 6 5 8-LEAD TSSOP X84160 .114 in. .252 in. WE WP VSS 8-LEAD PDIP 8-LEAD XBGA: Top View NC WE OE VSS WP VCC I/O CE 1 2 3 4 8 7 6 5 .078 in. |
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