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MGC3130 Datasheet(PDF) 3 Page - Microchip Technology |
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MGC3130 Datasheet(HTML) 3 Page - Microchip Technology |
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3 / 40 page  2012 Microchip Technology Inc. Advance Information DS41667A-page 3 MGC3130 TABLE 1: 28-PIN QFN PINOUT DESCRIPTION Pin Name Pin Number Pin Type Buffer Type Description VCAPS 1P — External filter capacitor (10 µF) connection for internal STEP-UP converter (optional). VINDS 2P — External inductor (4.7 µH) + Schottky diode connection for internal STEP-UP converter usage (optional). VSS2 3P — Ground reference for the STEP-UP converter. RX0 4 I Analog Analog input channels: Receive electrode connection. RX1 5 I Analog RX2 6 I Analog RX3 7 I Analog RX4 8 I Analog VCAPA 9P — External filter capacitor (4.7 µF) connection for internal analog voltage regulator (3V). VSS3 10 P — Common ground reference for analog and digital domain. VCAPD 11 P — External filter capacitor (220 nF) connection for internal digital voltage regulator (1.8V). EIO0 12 I/O ST Extended IO0 (EIO0)/Interface Selection Pin 0 (IS0). EIO1 13 I/O ST Extended IO1 (EIO1)/Interface Selection Pin 1 (IS1). EIO2 14 I/O ST Extended IO2 (EIO2)/IRQ0. IS2 15 I ST Interface Selection Pin 2 (IS2). NC 16 —— Reserved: do not connect. NC 17 —— Reserved: do not connect. NC 18 —— Reserved: do not connect. EIO3 19 I/O ST Extended IO3 (EIO3)/IRQ1/SYNC. SI0 20 I/O ST Serial Interface 0 (SI0): I2C™_SDA0/SPI_MISO. When I2C™ is used, this line requires an external 1.8 k pull-up. SI1 21 I/O ST Serial Interface 1 (SI1): I2C™_SCL0/SPI_MOSI. When I2C™ is used, this line requires an external 1.8 k pull-up. SI2 22 I/O ST Serial Interface 2 (SI2): I2C™_SDA1/SPI_CS. When I2C™ is used, this line requires an external 1.8 k pull-up. SI3 23 I/O ST Serial Interface 3 (SI3): I2C™_SCL1/SPI_SCLK. When I2C™ is used, this line requires an external 1.8 k pull-up. MCLR 24 I/P ST Master Clear (Reset) input. This pin is an active-low Reset to the device. It requires external 10 k pull-up. TXD 25 O Analog Transmit electrode connection. NC 26 —— Reserved: do not connect. VSS1 27 P — Common ground reference for analog and digital domains. VDD 28 P — Positive supply for peripheral logic and I/O pins. It requires an external filtering capacitor (100 nF). EXP 29 P — Exposed pad. It should be connected to Ground. Legend: P = Power; ST = Schmitt Trigger input with CMOS levels; O = Output; I = Input; — = N/A |
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