view mmtb1/schem+bom/vsrc/led_circuit.v @ 68:8bfa10553e36

lunalcd2/src/MCL: different part for two-post VBAT supply header The tin-plated part is currently out of stock at Digi-Key, but the better gold-plated part is in stock and still reasonably inexpensive.
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 26 Jun 2021 20:40:29 +0000
parents 0f9bdd60ce50
children
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/*
 * This module captures the circuit for showing the state of a digital signal
 * on a LED without loading that digital signal by driving the LED from VBAT
 * and using a MOSFET to control it.
 */

module led_circuit (GND, VBAT, Signal);

input GND, VBAT, Signal;

wire R_to_LED, LED_to_Q;

resistor R (VBAT, R_to_LED);
diode led (.A(R_to_LED), .C(LED_to_Q));
mosfet Q (.G(Signal), .S(GND), .D(LED_to_Q));

endmodule