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MCP4641-503E/UN 数据表(PDF) 35 Page - Microchip Technology |
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MCP4641-503E/UN 数据表(HTML) 35 Page - Microchip Technology |
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35 / 92 page ![]() © 2008 Microchip Technology Inc. DS22107A-page 35 MCP454X/456X/464X/466X 3.0 PIN DESCRIPTIONS The descriptions of the pins are listed in Table 3-1. Additional descriptions of the device pins follows. TABLE 3-1: PINOUT DESCRIPTION FOR THE MCP454X/456X/464X/466X Pin Weak Pull-up/ down (1) Standard Function Single Dual Symbol I/O Buffer Type Rheo Pot (1) Rheo Pot 8L 8L 10L 14L 16L 1 1 1 1 16 HVC/A0 I HV w/ST “smart” High Voltage Command / Address 0. 2 2 2 2 1 SCL I HV w/ST No I2C clock input. 3 3 3 3 2 SDA I/O HV w/ST No I2C serial data I/O. Open Drain output 4 444 3, 4 VSS — P — Ground — — 5 5 5 P1B A Analog No Potentiometer 1 Terminal B — — 6 6 6 P1W A Analog No Potentiometer 1 Wiper Terminal — — — 7 7 P1A A Analog No Potentiometer 1 Terminal A — 5 — 8 8 P0A A Analog No Potentiometer 0 Terminal A 5 6 7 9 9 P0W A Analog No Potentiometer 0 Wiper Terminal 6 7 8 10 10 P0B A Analog No Potentiometer 0 Terminal B —— — 11 12 WP I HV w/ST “smart” Hardware EEPROM Write Protect — — — 12 13 A2 I HV w/ST “smart” Address 2 7 — 9 13 14 A1 I HV w/ST “smart” Address 1 8 8 10 14 15 VDD — P — Positive Power Supply Input — — — — 11 NC — — — No Connection 9 9 11 — 17 EP — — — Exposed Pad (Note 2) Legend: HV w/ST = High Voltage tolerant input (with Schmidtt trigger input) A = Analog pins (Potentiometer terminals) I = digital input (high Z) O = digital output I/O = Input / Output P = Power Note 1: The pin’s “smart” pull-up shuts off while the pin is forced low. This is done to reduce the standby and shut- down current. 2: The DFN and QFN packages have a contact on the bottom of the package. This contact is conductively connected to the die substrate, and therefore should be unconnected or connected to the same ground as the device’s VSS pin. |
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