Pin No. | Pin Name | I/O | Description | |
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40 | TP(R) |
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41 | TUN(R) | I | Signal input pins. | |
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42 | CD(R) | |||
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43 | AUX(R) |
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44 | RSELO | O | Input selector output pin. | |
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IC, LC75853NW
Pin No. | Pin Name | I/O | Description | |
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1 ~ 40 | S1 ~ S40 | O | LCD segment output. | |
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41 ~ 43 | COM1~ COM3 | O | LCD command driver outputs. | |
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44 ~ 49 | KS1 ~ KS6 | O | Key scan outputs. | |
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50 ~ 54 | KI1 ~ KI5 | I | Key scan inputs. These pins have | |
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55 | TEST | - | Test pin. (Connected to GND.) | |
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56 | VDD | - | Power supply. | |
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57 | VDD1 | I | Used for applying the LCD drive 2/3 bias voltage externally. (Must be connected to | |
VDD2 when a 1/2 bias drive scheme is used.) | ||||
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58 | VDD2 | I | Used for applying the LCD drive 1/3 bias voltage externally. (Must be connected to | |
VDD1 when a 1/2 bias drive scheme is used. | ||||
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59 | VSS | - | Power supply. (Connected to GND.) | |
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60 | OSC | I/O | Resistor and capacitor are attached externally form an oscillator circuit. | |
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61 | DO | O | Serial data interface pin; output data. | |
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62 | CE | O | Serial data interface pin; chip enable. | |
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63 | CL | O | Serial data interface pin; synchronization. | |
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64 | DI | O | Serial data interface pin; data transferred. | |
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