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CAT24C44VI Datasheet(PDF) 4 Page - ON Semiconductor |
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CAT24C44VI Datasheet(HTML) 4 Page - ON Semiconductor |
4 / 9 page 4 CAT24C44 Doc. No. MD-1083, Rev. T © 2008 SCILLC. All rights reserved. Characteristics subject to change without notice A.C. CHARACTERISTICS VCC = 5V ±10%, unless otherwise specified. Symbol Parameter Min. Max. Units Conditions FSK SK Frequency DC 1 MHz tSKH SK Positive Pulse Width 400 ns tSKL SK Negative Pulse Width 400 ns CL = 100pF + 1TTL gate tDS Data Setup Time 400 ns VOH = 2.2V, VOL = 0.65V tDH Data Hold Time 80 ns VIH = 2.2V, VIL = 0.65V tPD SK Data Valid Time 375 ns Input rise and fall times = 10ns tZ CE Disable Time 1 µs tCES CE Enable Setup Time 800 ns tCEH CE Enable Hold Time 400 ns tCDS CE De-Select Time 800 ns A.C. CHARACTERISTICS, Store Cycle VCC = 5V ±10%, unless otherwise specified. Limits Symbol Parameter Min. Max. Units Conditions tST Store Time 10 ms CL = 100pF + 1TTL gate tSTP Store Pulse Width 200 ns VOH = 2.2V, VOL = 0.65V tSTZ Store Disable Time 100 ns VIH = 2.2V, VIL = 0.65V A.C. CHARACTERISTICS, Recall Cycle VCC = 5V ±10%, unless otherwise specified. Symbol Parameter Min. Max. Units Conditions tRCC Recall Cycle Time 2.5 µs tRCP Recall Pulse Width 500 ns CL = 100pF + 1TTL gate tRCZ Recall Disable Time 500 ns VOH = 2.2V, VOL = 0.65V tORC Recall Enable Time 10 ns VIH = 2.2V, VIL = 0.65V tARC Recall Data Access Time 1.5 µs INSTRUCTION SET Format Instruction Start Bit Address OP Code Operation WRDS 1 XXXX 0 0 0 Reset Write Enable Latch (Disables, Writes and Stores) STO 1 XXXX 0 0 1 Store RAM Data in EEPROM WRITE 1 AAAA 0 1 1 Write Data into RAM Address AAAA WREN 1 XXXX 1 0 0 Set Write Enable Latch (Enables, Writes and Stores) RCL 1 XXXX 1 0 1 Recall EEPROM Data into RAM READ 1 AAAA 1 1 X Read Data From RAM Address AAAA X = Don’t care A = Address bit |
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