view lunalcd1/src/schem.v @ 7:6eb4cdc500be

lunalcd1: backlight resistors changed to 38.3R
author Mychaela Falconia <falcon@freecalypso.org>
date Wed, 01 Apr 2020 21:13:21 +0000
parents 839e9b527e69
children 28a0574af823
line wrap: on
line source

module board ();

wire GND, VBAT, Vio;
wire [15:0] DB;
wire RD, WR, RS, CS, RESET;
wire BL_EN, Vbacklight;
wire [1:3] LEDK;

/* LCD module connector */

conn_36pin_plus2 fpc (  .pin_1(DB[15]),
			.pin_2(DB[14]),
			.pin_3(DB[13]),
			.pin_4(DB[12]),
			.pin_5(DB[11]),
			.pin_6(DB[10]),
			.pin_7(DB[9]),
			.pin_8(DB[8]),
			.pin_9(GND),
			.pin_10(DB[7]),
			.pin_11(DB[6]),
			.pin_12(DB[5]),
			.pin_13(DB[4]),
			.pin_14(DB[3]),
			.pin_15(DB[2]),
			.pin_16(DB[1]),
			.pin_17(DB[0]),
			.pin_18(Vio),	/* IOVCC */
			.pin_19(Vio),	/* VCI */
			.pin_20(RD),
			.pin_21(WR),
			.pin_22(RS),
			.pin_23(CS),
			.pin_24(RESET),
			.pin_25(GND),	/* IM0 tied low */
			.pin_26(GND),
			.pin_27(Vbacklight),	/* LEDA */
			.pin_28(LEDK[1]),
			.pin_29(LEDK[2]),
			.pin_30(LEDK[3]),
			/* the remaining pins are NC */
			.pin_31(),
			.pin_32(),
			.pin_33(),
			.pin_34(),
			.pin_35(),
			.pin_36(),
			/* ground the two mounting pads */
			.pin_37(GND),
			.pin_38(GND)
	);

/* bypass cap for LCD module core */
capacitor LCD_bypass_cap (Vio, GND);

/* main interface connector */

header_26pin main_if (  .pin_1(DB[15]),
			.pin_2(DB[14]),
			.pin_3(DB[13]),
			.pin_4(DB[12]),
			.pin_5(DB[11]),
			.pin_6(DB[10]),
			.pin_7(DB[9]),
			.pin_8(DB[8]),
			.pin_9(DB[7]),
			.pin_10(DB[6]),
			.pin_11(DB[5]),
			.pin_12(DB[4]),
			.pin_13(DB[3]),
			.pin_14(DB[2]),
			.pin_15(DB[1]),
			.pin_16(DB[0]),
			.pin_17(CS),
			.pin_18(RD),
			.pin_19(WR),
			.pin_20(RS),
			.pin_21(GND),
			.pin_22(GND),
			.pin_23(RESET),
			.pin_24(Vio),
			.pin_25(BL_EN),
			.pin_26(GND)
	);

/* backlight circuit */

header_2pin VBAT_conn ( .pin_1(VBAT),
			.pin_2(GND)
	);

capacitor VBAT_bypass_cap (VBAT, GND);

regulator reg ( .IN(VBAT),
		.OUT(Vbacklight),
		.GND(GND),
		.EN(BL_EN)
	);

capacitor reg_out_cap (Vbacklight, GND);

resistor R1 (LEDK[1], GND);
resistor R2 (LEDK[2], GND);
resistor R3 (LEDK[3], GND);

endmodule