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MM2201VDW6TR Datasheet(PDF) 5 Page - STMicroelectronics |
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MM2201VDW6TR Datasheet(HTML) 5 Page - STMicroelectronics |
5 / 15 page Symbol Alt Parameter Min Max Unit tCH1CH2 tR Clock Rise Time 1 µs tCL1CL2 tF Clock Fall Time 300 ns tDH1DH2 tR Input Rise Time 1 µs tDL1DL1 tF Input Fall Time 300 ns tCHDX (1) tSU:STA Clock High to Input Transition 4.7 µs tCHCL tHIGH Clock Pulse Width High 4 µs tDLCL tHD:STA Input Low to Clock Low (START) 4 µs tCLDX tHD:DAT Clock Low to Input Transition 0 µs tCLCH tLOW Clock Pulse Width Low 4.7 µs tDXCX tSU:DAT Input Transition to Clock Transition 250 ns tCHDH tSU:STO Clock High to Input High (STOP) 4.7 µs tDHDL tBUF Input High to Input Low (Bus Free) 4.7 µs tCLQV (2) tAA Clock Low to Next Data Out Valid 0.3 3.5 µs tCLQX tDH Data Out Hold Time 300 ns fC fSCL Clock Frequency 100 kHz tW tWR Write Time 10 ms Notes: 1. For a reSTART condition, or following a write cycle. 2. The minimum value delays the falling/rising edge of SDA away from SCL = 1 in order to avoid unwanted START and/or STOP conditions. Table 5. AC Characteristics (TA = 0 to 70 °C or –40 to 85 °C; VCC = 4.5V to 5.5V or 2.7V to 5.5V) Memory Addressing. To start communication be- tween the bus master and the slave M2201, the master must initiate a START condition. Following this, the master sends onto the SDA bus line 8 bits (MSB first) corresponding to the 7th bit byte-ad- dress and a READ or WRITE bit. This 8th bit is set to ’1’ for read and ’0’ for write operations. If a match is found, the corresponding memory will acknow- ledge the identification on the SDA bus during the 9th bit time. Write Operations Following a START condition the master sends the byte address with the RW bit reset to ’0’. The memory acknowledges this and waits for a data byte. Any write command with WC = 1 (during a period of time from the START condition until the end of the Byte Address) will not modify data and will NOT be acknowledged on data bytes, as in Figure 8. Input Rise and Fall Times ≤ 50ns Input Pulse Voltages 0.2VCC to 0.8VCC Input and Output Timing Ref. Voltages 0.3VCC to 0.7VCC Table 6. AC Measurement Conditions AI00825 0.8VCC 0.2VCC 0.7VCC 0.3VCC Figure 4. AC Testing Input Output Waveforms 5/15 M2201 |
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