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HD66765 Datasheet(PDF) 7 Page - Hitachi Semiconductor |
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HD66765 Datasheet(HTML) 7 Page - Hitachi Semiconductor |
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7 / 71 page  HD66765 7 Preliminary Specification Table 1 Pin Functional Description (cont) Signals Number of Pins I/O Connected to Functions DB1/SDO 1 I/O MCU Serves as a 16-bit bidirectional data bus. For an 8-bit bus interface, data transfer uses DB15- DB8; fix unused DB7-DB0 to the Vcc or GND level. For a clock-synchronous serial interface, serves as a serial data output pin (SDO). Successive bit values are output on the falling edge of the SCL signal. DB2-DB15 14 I/O MPU Serves as a 16-bit bidirectional data bus. For an 8-bit bus interface, data transfer uses DB15- DB8; fix unused DB7-DB0 to the Vcc or GND level. SEG1–SE G396 396 O LCD Output signals for segment drive. In the display-off period (D1–0 = 00, 01) or standby mode (STB = 1), all pins output GND level. The SGS bit can change the shift direction of the segment signal. For example, if SGS = 0, RAM address 0000 is output from SEG1. If SGS = 1, it is output from SEG396. SEG1, SEG4, SEG7, ... display red (R), SEG2, SEG5, SEG8, ... display green (G), and SEG3, SEG6, SEG9, ... display blue (B) (SGS = 0). CL1 1 O HD66764 The one-raster-row-cycle pulse is output. M 1 O HD66764 The AC-cycle signal is output. FLM 1 O HD66764 The frame-start pulse is output. DISPTMG 1 O HD66764 Outputs the display period signal. DCCLK 1 O HD66764 Outputs clocks for the step-up. CCL 1 O HD66764 Clock signal for a serial transfer of register setting values to the common driver. Data is output on the falling edge of this clock. CDA 1 O HD66764 Data signal for serial transfer as register setting values to the common driver. CCS* 1 O HD66764 Chip-select for the HD66764. Low: the HD66764 is selected and can receive a serial transfer. High: the HD66764 is not selected and cannot receive a serial transfer. VSH 1 I HD66764 Input for the LCD-drive voltage for the segment driver, which can be provided by the HD66764’s on-chip power supply. VSH ≤ 4.0 V V CC, GND 2 — Power supply V CC: + 1.8 V to + 3.6 V; GND (logic): 0 |
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