X25640S Xicor, X25640S Datasheet
X25640S
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X25640S Summary of contents
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... LOGIC HOLD WRITE CONTROL AND TIMING WP LOGIC Direct Write™ and Block Lock™ Protection is a trademark of Xicor, Inc. ©Xicor, Inc. 1994, 1995, 1996 Patents Pending 3089-1.8 6/17/96 T4/C4/D1 NS X25640 2 PROM With Block Lock DESCRIPTION The X25640 is a CMOS 65,536-bit serial E internally organized The X25640 features a Serial Peripheral Interface (SPI) and software protocol allowing operation on a simple three-wire bus ...
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X25640 PIN DESCRIPTIONS Serial Output (SO push/pull serial data output pin. During a read cycle, data is shifted out on this pin. Data is clocked out by the falling edge of the serial clock. Serial Input (SI) ...
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X25640 PRINCIPLES OF OPERATION 2 The X25640 PROM designed to interface directly with the synchronous serial peripheral interface (SPI) of many popular microcontroller families. The X25640 contains an 8-bit instruction register accessed ...
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X25640 Write-Protect Enable The Write-Protect-Enable (WPEN) is available for the X25640 as a nonvolatile enable bit for the WP pin. Protected Unprotected Status WPEN WP WEL Blocks Protected Protected Protected 1 LOW 0 Protected ...
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X25640 Operational Notes The X25640 powers-up in the following state: • The device is in the low power standby state. • A HIGH to LOW transition required to enter an active state and receive an instruction. • ...
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X25640 Figure 3. Write Enable Latch Sequence CS SCK SI SO Figure 4. Byte Write Operation Sequence SCK INSTRUCTION SI HIGH IMPEDANCE HIGH IMPEDANCE ...
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X25640 Figure 5. Page Write Operation Sequence SCK INSTRUCTION SCK DATA BYTE Figure 6. Write Status Register ...
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X25640 ABSOLUTE MAXIMUM RATINGS* Temperature under Bias .................. – +135 C Storage Temperature ....................... – +150 C Voltage on any Pin with Respect to V D.C. Output Current ............................................. 5mA Lead Temperature (Soldering, 10 seconds) .............................. ...
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X25640 EQUIVALENT A.C. LOAD CIRCUIT 2.16K OUTPUT 3.07K A.C. CHARACTERISTICS (Over recommended operating conditions, unless otherwise specified) Data Input Timing Symbol Parameter f Clock Frequency SCK t Cycle Time CYC CS Lead Time t LEAD CS Lag Time ...
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X25640 Serial Output Timing CS SCK MSB OUT ADDR SI LSB IN Serial Input Timing CS t LEAD SCK MSB IN HIGH IMPEDANCE CYC MSB–1 OUT t t ...
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X25640 Hold Timing CS SCK SO SI HOLD 3089 ILL F12.1 ...
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X25640 PACKAGING INFORMATION HALF SHOULDER WIDTH ON ALL END PINS OPTIONAL 0.015 (0.38) TYP. 0.010 (0.25) NOTE: 1. ALL DIMENSIONS IN INCHES (IN PARENTHESES IN MILLIMETERS) 2. PACKAGE DIMENSIONS EXCLUDE MOLDING FLASH 8-LEAD PLASTIC DUAL IN-LINE PACKAGE TYPE P 0.430 ...
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X25640 PACKAGING INFORMATION 14-LEAD PLASTIC SMALL OUTLINE GULL WING PACKAGE TYPE S PIN 1 INDEX PIN 1 0.014 (0.35) 0.020 (0.51) (4X) 7 0.050 (1.27) 0.010 (0.25) 0.020 (0.50) 0 – 8 0.016 (0.41) 0.037 (0.937) NOTE: ALL DIMENSIONS IN ...
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... LIMITED WARRANTY Devices sold by Xicor, Inc. are covered by the warranty and patent indemnification provisions appearing in its Terms of Sale only. Xicor, Inc. makes no warranty, express, statutory, implied description regarding the information set forth herein or regarding the freedom of the described devices from patent infringement. ...