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MCP4728 Datasheet(PDF) 8 Page - Microchip Technology |
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MCP4728 Datasheet(HTML) 8 Page - Microchip Technology |
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8 / 66 page  MCP4728 DS22187C-page 8 © 2009 Microchip Technology Inc. I2C SERIAL TIMING SPECIFICATIONS Electrical Specifications: Unless otherwise specified, all limits are specified for T A = -40 to +125°C, VSS = 0V, Standard and Fast Mode: VDD = +2.7V to +5.5V High Speed Mode: VDD = +4.5V to +5.5V. Parameters Sym Min Typ Max Units Conditions Clock Frequency fSCL 0 — 100 kHz Standard Mode Cb = 400 pF, 2.7V - 5.5V 0 — 400 kHz Fast Mode Cb = 400 pF, 2.7V - 5.5V 0 — 1.7 MHz High Speed Mode 1.7 Cb = 400 pF, 4.5V - 5.5V 0 — 3.4 MHz High Speed Mode 3.4 Cb = 100 pF, 4.5V - 5.5V Bus Capacitive Loading Cb — — 400 pF Standard Mode 2.7V - 5.5V — — 400 pF Fast Mode 2.7V - 5.5V — — 400 pF High Speed Mode 1.7 4.5V - 5.5V — — 100 pF High Speed Mode 3.4 4.5V - 5.5V Start Condition Setup Time (Start, Repeated Start) TSU:STA 4700 — ns Standard Mode 600 — — ns Fast Mode 160 — — ns High Speed Mode 1.7 160 — — ns High Speed Mode 3.4 Start Condition Hold Time THD:STA 4000 — ns Standard Mode 600 — — ns Fast Mode 160 — — ns High Speed Mode 1.7 160 — — ns High Speed Mode 3.4 Stop Condition Setup Time TSU:STO 4000 — ns Standard Mode 600 — — ns Fast Mode 160 — — ns High Speed Mode 1.7 160 — — ns High Speed Mode 3.4 Clock High Time THIGH 4000 — — ns Standard Mode 600 — — ns Fast Mode 120 — — ns High Speed Mode 1.7 60 — — ns High Speed Mode 3.4 Clock Low Time TLOW 4700 — — ns Standard Mode 1300 — — ns Fast Mode 320 — — ns High Speed Mode 1.7 160 — — ns High Speed Mode 3.4 Note 1: This parameter is ensured by characterization and is not 100% tested. 2: After a Repeated Start condition or an Acknowledge bit. 3: If this parameter is too short, it can create an unintentional Start or Stop condition to other devices on the I2C bus line. If this parameter is too long, the Data Input Setup (TSU:DAT) or Clock Low time (TLOW) can be affected. Data Input: This parameter must be longer than t SP. Data Output: This parameter is characterized, and tested indirectly by testing T AA parameter. 4: This specification is not a part of the I2C specification. This specification is equivalent to the Data Hold Time (THD:DAT) plus SDA Fall (or rise) time: TAA = THD:DAT + TFSDA (OR TRSDA). 5: Time between Start and Stop conditions. |
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