X24C44S Intersil, X24C44S Datasheet
X24C44S
Specifications of X24C44S
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X24C44S Summary of contents
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... The Xicor NOVRAM design allows data to be trans- ™ , 8051) ferred between the two memory arrays by means of software commands or external hardware inputs. A STORE operation (RAM data to EEPROM) is com- pleted in 5ms or less and a RECALL operation (EEPROM data to RAM) is completed in 2µs or less. ...
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X24C44 PIN DESCRIPTIONS Chip Enable (CE) The Chip Enable input must be HIGH to enable all read/write operations. CE must remain HIGH following a Read or Write command until the data transfer is complete. CE LOW places the X24C44 in ...
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X24C44 WRDS and WREN Internally the X24C44 contains a “write enable” latch. This latch must be set for either writes to the RAM or store operations to the EEPROM. The WREN instruction sets the latch and the WRDS instruction resets ...
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... DO *Bit 8 of Read Instructions is Don’t Care REV 1.0 6/22/00 Power-Down Data Protection Because the X24C44 only nonvolatile memory device it may be susceptible to inadvertent STOREs to the EEPROM array during power-down cycles. Power- up cycles are not a problem because the “previous recall” latch and “write enable” latch are reset, prevent- ing any possible corruption of EEPROM data ...
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X24C44 Figure 2. RAM Write Figure 3. Non-Data Operations Figure 4. X24C44 State Diagram Power On RAM Read Enabled RAM Read Enabled Sto or Wrds Cmd or Store ...
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X24C44 ABSOLUTE MAXIMUM RATINGS Temperature under bias ................... –65°C to +135°C Storage Temperature........................ –65°C to +150°C Voltage on any pin with respect to V .........................................–1V to +7V SS D.C. output current ............................................... 5mA Lead temperature (soldering, 10 seconds)........ 300°C RECOMMENDED ...
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X24C44 EQUIVALENT A.C. LOAD CIRCUIT 5V 919Ω Output 497Ω A.C. CHARACTERISTICS (Over the recommended operating conditions unless otherwise specified.) Read and Write Cycle Limits Symbol ( frequency positive pulse width SKH t SK negative pulse ...
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X24C44 Write Cycle SK CYCLE # CES Read Cycle SK CYCLE # 6 SK VIH REV 1.0 6/22/00 1 SKH SKL ...
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X24C44 NONVOLATILE OPERATIONS Operation STORE Hardware recall 1 Software recall 1 Hardware store 0 Software store 1 ARRAY RECALL LIMITS Symbol t Recall cycle time RCC t Recall pulse width RCP t Recall to output in high Z RCZ Notes: ...
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X24C44 Store Timing CE STORE DO SYMBOL TABLE WAVEFORM INPUTS OUTPUTS Must be Will be steady steady May change Will change from LOW from LOW to HIGH to HIGH May change Will change from HIGH from HIGH to LOW to ...
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X24C44 PACKAGING INFORMATION 0.150 (3.81) Min. NOTE: 1. ALL DIMENSIONS IN INCHES (IN PARENTHESES IN MILLIMETERS) REV 1.0 6/22/00 8-Lead Hermetic, DIP, Package Type D8 0.405 (10.92) – Pin 1 Index Pin 1 0.300 (7.62) Ref. Seating Plane 0.200 (5.08) ...
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X24C44 PACKAGING INFORMATION Half Shoulder Width On All End Pins Optional .073 (1.84) Typ. 0.010 (0.25) NOTE: 1. ALL DIMENSIONS IN INCHES (IN PARENTHESES IN MILLIMETERS) 2. PACKAGE DIMENSIONS EXCLUDE MOLDING FLASH REV 1.0 6/22/00 8-Lead Plastic, PDIP, Package Code ...
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X24C44 PACKAGING INFORMATION Pin 1 Index 0.010 (0.25) 0.020 (0.50) 0° - 8° 0.016 (0.410) 0.037 (0.937) NOTE: ALL DIMENSIONS IN INCHES (IN PARENTHESES IN MILLIMETERS) REV 1.0 6/22/00 8-Lead Plastic, SOIC, Package Code S8 Pin 1 0.014 (0.35) 0.019 ...
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X24C44 Ordering Information X24C44 Device 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 ...