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BK4819 データシート(PDF) 6 Page - Beken Corporation |
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BK4819 データシート(HTML) 6 Page - Beken Corporation |
6 / 22 page BK4819 Proprietary and Confidential Page 6 of 22 1.3 SPI Interface The BK4819 has 3-wires SPI interface. These 3 wires are SCK(PIN25), SCN(PIN26, SDATA(PIN27) for data exchange. SCK and SCN are input pins, while SDATA is bi-direction pin. BK4819 always latch data at the SCK rising edge and output its data at SCK falling edge. R/W A6 ... A0 D15 D14 D1 D0 SCK SDATA SCN A1 ... A5 Figure 5. Three-wires Interface Timing 2 Electrical Specifications 2.1 Absolute Maximum Ratings Maximum ratings are the extreme limits to which BK4819 can be exposed without permanently damaging it. Exposure to absolute maximum ratings for prolonged periods of time may affect BK4819’s reliability. Table 1 specifies the absolute maximum ratings for BK4819. Table 1. Absolute Maximum Ratings Parameter Symbol Min Typ Max Unit Supply Voltage VDD -0.3 — +3.6 V I/O pin voltage VIO -0.3 — VDD+0.3 V Storage Temperature TS –40 25 105 °C 2.2 Recommended Operating Conditions The operating conditions are the physical parameters that BK4819 can operate within. The operating conditions for BK4819 are defined in Table 2. Table 2. Recommended Operating Conditions Parameter Symbol Min Typ Max Unit Supply Voltage VDD 2.6 — 3.6 V Operating Temperature TO –30 25 85 °C Notes: All minimum and maximum specifications are guaranteed and apply across the recommended operating conditions. Typical values apply at VDD=3.3 V and 25 °C unless |
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