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HD66766R Datasheet(PDF) 11 Page - Hitachi Semiconductor |
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HD66766R Datasheet(HTML) 11 Page - Hitachi Semiconductor |
11 / 97 page HD66766R Rev. 1.0-1 / September 2002 11 Table 4 cont. Signals Number of Pins I/O Connected to Functions DB2-DB15 14 I/O MPU Serves as a 16-bit bi-directional 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 synchronous clock interface or unused pins, fixed to the Vcc or GND level. SEG1– SEG396 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). COM1– COM176 176 O LCD Output signals for common drive. In the display-off period (D1–0 = 00, 01) sleep mode (SLP = 1) or standby mode (STB = 1), all pins output GND level. The CMS bit can change the shift direction of the common signal. For example, if CMS = 0, driver outputs from COM1 to COM176. If CMS = 1, driver outputs COM176 to COM1. Note that start position of the common driver output is changed by screen diving position function. VCH, VCL 2 — Capacitor for stabilization, shot key barrier diode or external power supply Selection level for the common signal. When internal power supply is used, connect the capacitors for stabilization to VCH AND VCL, and shot key barrier diode to VCL. When internal power supply is not used, supply external voltage. VM 1 — Capacitor for stabilization or external power supply Non-selection level for the common signal. When internal operational amplifier is used, it is output of the internal operational amplifier and connect the capacitors for stabilization. When internal operational amplifier is not used, supply external voltage. VSH 1 — Capacitor for stabilization or external power supply Selection level for the segment signal. When internal operational amplifier is used, it is output of the internal operational amplifier and connect the capacitors for stabilization. When internal operational amplifier is not used, supply external voltage. VciOUT 1 — Vci1 and capacitor for stabilization or open Outputs a regulated voltage derived from Vcc. Connect a capacitor for stabilization. When this pin is not used, leave it open. Vci1 1 — VciOUT or power supply Voltage-input pin for step-up circuit 1. When the Vci adjuster is used, input the power supply from VciOUT. When not used, input the external power supply. Vci2 1 — Capacitor for stabilization or open Connect capacitor for stabilization. When the internal power supply circuit is not used, leave this pin open. VOUT 1 — Step-up capacitance A voltage that doubles or triples the voltage between Vci1 and GND is output here. The step-up factor can be set in an internal register. C11+, C11- 2 — Step-up capacitance When step-up circuit is used, connect a step-up capacitor. |
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