X24C45PI INTERSIL [Intersil Corporation], X24C45PI Datasheet
X24C45PI
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X24C45PI Summary of contents
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... EEPROM array. The X24C45 is fabri- cated with Intersil’s Advanced CMOS Floating Gate technology. The Intersil NOVRAM design allows data to be trans- ferred between the two memory arrays by means of software commands or external hardware inputs. A ™ , 8051) store operation (RAM data to EEPROM) is completed in 5ms or less and a recall operation (EEPROM data to RAM) is completed in 2µ ...
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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 X24C45 in the ...
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DEVICE OPERATION The X24C45 contains an 8-bit instruction register accessed via the DI input, with data being clocked in on the rising edge of SK. CE must be HIGH during the entire data transfer operation. Table 1. contains ...
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WRITE The WRITE instruction contains the 4-bit address of the word to be written. The write instruction is immediately followed by the 16-bit word to be written. CE must remain HIGH during the entire operation. CE must go LOW before ...
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Figure 1. RAM Read HIGH Z DO *Bit 8 of Read Instructions is Don’t Care Figure 2. RAM Write Figure 3. Non-Data ...
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Figure 4. FX24C45 State Diagram RAM Read Or Write WREN Command 6 X24C45 Power OFF STO Or AUTOSTORE Wrds Cmd Power-down STO Or Wrds Cmd RAM Read & Write Enabled Store Enabled ENAS Command AUTOSTORE Enabled Power On Power-Up Recall ...
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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) ........ ...
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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 width ...
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Write Cycle SK CYCLE # CES Read Cycle SK CYCLE # X24C45 1 SKH SKL ...
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NONVOLATILE OPERATIONS Operation RECALL Hardware recall 0 Software recall 1 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 Recall Timing RECALL DO SOFTWARE ...
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AUTOSTORE CYCLE LIMITS Symbol t AUTOSTORE cycle time ASTO V AUTOSTORE threshold voltage ASTH V AUTOSTORE cycle end voltage ASEND AUTOSTORE Cycle Timing Diagrams SYMBOL TABLE WAVEFORM INPUTS OUTPUTS Must be Will be steady steady ...
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Ordering Information X24C45 Device All Intersil U.S. products are manufactured, assembled and tested utilizing ISO9000 quality systems. Intersil Corporation’s quality certifications can be viewed at www.intersil.com/design/quality Intersil products are sold by description only. Intersil Corporation reserves the right to make ...