717 Multiplexed clock

717 : Multiplexed clock

  • Author: Gustavo Gomez
  • Description: Multiplexed clock with buttons
  • GitHub repository
  • Clock: 32728 Hz

How it works

Basically this is a clock that counts minutes shows the hours in the 24-hour format, it uses the dot in the 7 segments to indicate 15s 30s 45s and 60s respectibly.

     -- 0 --         -- 0 --         -- 0 --         -- 0 --   
    |       |       |       |       |       |       |       |  
    5       1       5       1       5       1       5       1  
    |       |       |       |       |       |       |       |  
     -- 6 --         -- 6 --         -- 6 --         -- 6 --   
    |       |       |       |       |       |       |       |  
    4       2       4       2       4       2       4       2  
    |       |       |       |       |       |       |       |  
     -- 3 --  :60s   -- 3 --  :45s   -- 3 --  :30s   -- 3 --  :15s
        ↑               ↑               ↑               ↑    
      Hours H         Hours L         Minutes H       Minutes L
    uio_out[3]      uio_out[2]       uio_out[1]      uio_out[0]     

[6:0] of the seven segments are connected to the uo_out output and the 7 bit is for the dot of the seven sevements. The digist are multiplexed, each digit is shown 1ms, those pins are uio_out[3:0] and uio_out[5:4] are used for debuging showing the clock of the seconds and minutes.

For the test i have used this 7 segment with common Cathode. But you can use which ever 7 segmnet display of 4 digits common or anode thats to the pins ui_in[3:2] with are use to negate the 7 segmetents or the multixplexing. Finally, ui_in[1:0] are used with a button to increase the hours or minutes.

How to test

I have selected a clock 32,768khz because i thought it will be easy to buy a ready commponent that generates a squera wave with that frecuency, we will see about that :stuck_out_tongue_closed_eyes:. Just connect the 7 segments to the uo_out pins and select your configuration anode or catothe with the ui_in[3] pin. For the multiplexing connected uio_out[3:0] to the digits as show in how to use drawing.

And finally if you want to increase the numbers connect a button pull up to the pins ui_in[1:0] to increase hours or minutes.

Generate a reset to start to init all the registers.

External hardware

7 segment 4 digits multiplexed

Picture

IO

#InputOutputBidirectional
0pull up button that increases minutessegment aoutput multiplex first digit
1pull up button that increases hourssegment boutput multiplex second digit
2pin used to negate 7 segment ouputs if necesary / for catode or anode configurationssegment coutput multiplex third digit
3pin used to negate 4 pins to multiplex if necesary / for catode or anode configurationssegment doutput multiplex forth digit
4segment eoutput clock of seconds / testing purposes
5segment foutput clock of minutes / testing purposes
6segment goutput not used
7dotoutput not used

Chip location

Controller Mux Mux Mux Mux Mux Mux Mux Mux Mux Mux Mux Mux Mux Mux Mux Mux Mux Mux Mux Mux Mux Mux Mux Mux tt_um_chip_rom (Chip ROM) tt_um_factory_test (TinyTapeout 05 Factory Test) tt_um_loopback (TinyTapeout 05 Loopback Test Module) tt_um_Leaky_Integrate_Fire_nfjesifb (Leaky Integrate and Fire Neuron Model) tt_um_topModuleKA (Time Multiplexed Neuron Ckt) tt_um_sap_1 (SAP-1 Computer) tt_um_lif (Leaky Integrate-and-Fire Neuron (Verilog Demo)) tt_um_jleugeri_ticktocktokens (TickTockTokens) tt_um_LSNN (Spiking LSTM Network) tt_um_if (Integrate-and-Fire Neuron. (Verilog Demo)) tt_um_mihailocode_neural_network (Neural network on chip) tt_um_hls_lfi (Simple Leaky Integrate and Fire (LIF) Neuron) tt_um_diadatp_spigot_e (e Spigot) tt_um_kskyou (Continued Fraction Calculator) tt_um_wokwi_380005495431181313 (Water Pump Controller) tt_um_EventFilter (Event Denoising Circuit) tt_um_wokwi_380416099936681985 (7 segment seconds (Verilog Demo)) tt_um_freq_hcohensa (Frequency Encoder/Decoder) tt_um_wokwi_380410498092232705 (UART Greeter with RNN Module) tt_um_wokwi_380120751165092865 (WS2812B LED strip driver) tt_um_wokwi_380408486941145089 (Tiny Tapeout 5 Workshop) tt_um_wokwi_380409169798008833 (Tiny Tapeout 1) tt_um_wokwi_380409488188706817 (Supercon Workshop) tt_um_matrix_multiplier (Matrix Multiplier) tt_um_wokwi_380408594272345089 (Clock Divider) tt_um_wokwi_380408784463076353 (Binary Counter) tt_um_wokwi_380408396356749313 (ring osc test) tt_um_7segx4_clock_abhishek_top (7 segment clock with 4 digits) tt_um_wokwi_380409481852161025 (test001) tt_um_hodgkin_huxley (Hodgkin-Huxley Chip Design) tt_um_wokwi_380408823952452609 (Character Selector) tt_um_wokwi_380409904919056385 (Intructouction to PRBS) tt_um_wokwi_380409081067502593 (tto5 Supercon Project) tt_um_jmadden173_delta_modulation (Delta Modulation Spike Encoding) tt_um_wokwi_380409086743445505 (GameOfLife) tt_um_reflex_game (Reflex Game) tt_um_wokwi_380409019830656001 (Logic Gates Tapeout) tt_um_Fiona_CMU (Stream Cipher w/ LSR) tt_um_wokwi_380409532780455937 (tt5modifyd) tt_um_alu_chip (ALU Chip) tt_um_wokwi_380408936929183745 (Tapeout Test) tt_um_rjmorgan11_calculator_chip (Calculator chip) tt_um_wokwi_380409369220404225 (Shifty Snakey) tt_um_synth_GyanepsaaS (Synth) tt_um_wokwi_380408774591779841 (Sawtooth Generator) tt_um_wokwi_380197591775930369 (Blinking A) tt_um_wokwi_380409393770716161 (Supercon 2023) tt_um_mvm (Sparsity Aware Matrix Vector Multiplication) tt_um_wokwi_380408455148316673 (Ring Oscillator and Clock Source Switch) tt_um_mv_mult_alrdelcr (Matrix Vector Multiplication (Verilog Demo)) tt_um_wokwi_380416361853146113 (IDK WHAT TO DO) tt_um_wokwi_379319062779062273 (7-segment display logic system ) tt_um_wokwi_380409568391147521 (Hardware Trojan Example) tt_um_wokwi_379824923824476161 (Analog Clock) tt_um_wokwi_380145600224164865 (7 segment display) tt_um_wokwi_379889284755158017 (W_Li_10/28) tt_um_wokwi_380408409844584449 (Supecon Gate Play) tt_um_manjushettar (ECE 183 - Integrate and Fire Network Chip Design) tt_um_wokwi_380409236812508161 (tto5) tt_um_rebel2_balanced_ternary_ALU (REBEL-2 Balanced Ternary ALU) tt_um_wokwi_380229599886002177 (Stochastic Multiplier) tt_um_jeffdi_seven_segment_seconds (7 segment seconds - count down) tt_um_wokwi_380416616536542209 (TT05 Submission) tt_um_lif_n (Leaky Integrate-and-Fire Neuron) tt_um_wokwi_379764885531576321 (Count via LFSR) tt_um_dlmiles_tt05_i2c_bert (I2C BERT) tt_um_loopback_ericsmi (tt05-loopback tile with input skew measurement) tt_um_flappy_vga_cutout1 (Flappy VGA) tt_um_async_proc_paulschulz (Asynchronous Parallel Processor Demonstrator) tt_um_wokwi_380055891603379201 (Hex Countdown) tt_um_nickjhay_processor (Matrix multiply coprocessor (8x8 1bit)) tt_um_htfab_cell_tester (Standard cell generator and tester) tt_um_wta (Winner-Take-All Network (Verilog Demo)) tt_um_muncherkin_lioncage (Lion cage) tt_um_seven_segment_seconds_ksandov4 (Brain Inspired Random Dropout Circuit) tt_um_seanvenadas (Event-Based Denoising Circuit) tt_um_wokwi_378231665807713281 (RAM cell test) tt_um_rejunity_ay8913 (Classic 8-bit era Programmable Sound Generator AY-3-8913) tt_um_rnn (RNN (Demo)) tt_um_gharenthi_top (STDP Neuron) tt_um_SNN (Basic Spiking Neural Network) tt_um_btflv_8bit_fp_adder (8 bit floating point adder) tt_um_perceptron (Perceptron Hardcoded) tt_um_jkprz (Cheap and quick STDP) tt_um_topLevel_derekabarca (Brain-Inspired Oscillatory Network) tt_um_uwuifier (UART uwuifier) tt_um_perceptron_connorguzi (Perceptron and basic binary neural network) tt_um_hadirkhan10_lif_neuron (Leaky Integrate-and-Fire Neuron) tt_um_wokwi_380119282165535745 (7 segment seconds) tt_um_uabc_electronica_2023 (UABC-ELECTRONICA) tt_um_proppy_bytebeat (bytebeat) tt_um_meriac_play_tune (Super Mario Tune on A Piezo Speaker) tt_um_wrapper_inputblackboxoutput (Byte Computer) tt_um_vhdl_seven_segment_seconds (7 segment seconds (VHDL Demo)) tt_um_cejmu (4-Bit ALU) tt_um_rejunity_sn76489 (Classic 8-bit era Programmable Sound Generator SN76489) tt_um_minipit_stevej (Miniature Programmable Interrupt Timer) tt_um_gchenfc_seven_segment_gerry (7-segment Name Display) tt_um_supertails_tetris (Tetris) tt_um_mabhari_seven_segment_seconds (Simple_Timer-MBA) tt_um_njzhu_uart (UART Receiver) tt_um_wokwi_376553022662786049 (AGL CorticoNeuro-1) tt_um_adaptive_lif (Leaky-Integrated Fire Neuron) tt_um_myuart (MyUART) tt_um_wokwi_380438365946734593 (UART test) tt_um_tkmheart (Heart Rhythm Analyzer) tt_um_stdp (Spike-timing dependent plasticity (Verilog Demo)) tt_um_wokwi_380465686251921409 (Tiny Tapeout 5 TM project1) tt_um_thermocouple (Thermocouple-to-temperature converter (digital backend)) tt_um_wokwi_380412382001715201 (Naive 8-bit Binary Counter) tt_um_asinghani_tinyscanchain_tt05 (tinyscanchain Test Design) tt_um_carlosgs99_cro_udg (6 digit chronometer.) tt_um_suhrojo (Convolutional Network Circuit Chip Design) tt_um_mvm_ (Matrix Vector Multiplication Accelerator) tt_um_perceptron_neuromeme (Perceptron (Neuromeme)) tt_um_czlucius_alu (4 Bit ALU) tt_um_BNNNeuron (Binary Neural Network (Verilog Demo)) tt_um_urish_skullfet (SkullFET) tt_um_ja1tye_sound_generator (Wavetable Sound Generator) tt_um_jaylennee_wta_pwm (PWM signal generation with Winner-Take-All selection) tt_um_joerdsonsilva_top (Multimode Modem) tt_um_toivoh_synth (Analog emulation monosynth) tt_um_tiny_game_of_life (Tiny Game of Life) tt_um_mingkaic1_stack_machine (Stack Machine) tt_um_morningjava_top (ChipTune) tt_um_urish_silife (Game of Life 8x8 (siLife)) tt_um_tt05_analog_test (TT05 Analog Testmacro (Ringo, DAC)) tt_um_wokwi_380409528895479809 (RBUART) tt_um_mattngaw_fp8 (8-bit Floating-Point Adder) tt_um_chip_inventor_music__6_bit_count (6 bit Counter and Piano Music created by Chip Inventor) tt_um_4_bit_pipeline_multiplier (4 Bit Pipelined Multiplier) tt_um_wokwi_380477805171811329 (2-Bit ALU + Dice) tt_um_wokwi_380490286828784641 (TT02 Wokwi 7seg remake) tt_um_wokwi_380361576213660673 (ping pong asic) tt_um_prg (A Boolean function based pseudo random number generator (PRNG)) tt_um_digital_clock_sellicott (Digital Desk Clock) tt_um_haozhezhu_top (4-bit FIFO/LIFO) tt_um_top_mole99 (One Sprite Pony) tt_um_GrayCounter_ariz207 (4 bit Sync Gray Code Counter) tt_um_clkdiv (Clock and Random Number Gen) tt_um_matt_divider_test (TT05 Analog Test) tt_um_tomkeddie_a (VGA Experiments) tt_um_rejunity_rule110 (Rule110 cell automata) tt_um_no_time_for_squares_tommythorn (No Time for Squares) tt_um_urish_silife_max (Game of Life 8x32 (siLife)) tt_um_gfg_development_tros (TROS) tt_um_chatgpt_snn_mtomlin5 (ChatGPT designed Spiking Neural Network) tt_um_ks_pyamnihc (Karplus-Strong String Synthesis) tt_um_dinogame (VGA Dino Game) tt_um_himanshu5_prog_chipTop (Dual Compute Unit) tt_um_rtfb_collatz (Collatz conjecture brute-forcer) tt_um_retospect_neurochip (Field Programmable Neural Array) tt_um_urish_dffram (DFFRAM Example (128 bytes)) tt_um_rejunity_snn (Chonky SNN) tt_um_hh (Hodgkin-Huxley Neuron) tt_um_wokwi_377426511818305537 (PRBS Generator) tt_um_devinatkin_stopwatch (Stop Watch) tt_um_algofoogle_vga_spi_rom (vga_spi_rom) tt_um_blink (RO and counter) tt_um_ttl74hc595_v2 (8-Bit Shift Register with Output Latches 74HC595) tt_um_psychogenic_neptuneproportional (Neptune guitar tuner (proportional window, version b, debug output on bidir pins, larger set of frequencies)) tt_um_urish_simon (Simon Says game) tt_um_kianV_rv32ima_uLinux_SoC (KianV uLinux SoC) tt_um_urish_ringosc_cnt (Ring oscillator with counter) tt_um_sunaofurukawa_cpu_8bit (cpu_8bit) tt_um_vga_clock (VGA clock) tt_um_seven_segment_seconds (7 segment seconds (Verilog Demo)) tt_um_frequency_counter (Frequency counter) tt_um_rgb_mixer (RGB Mixer) tt_um_MichaelBell_spi_peri (SPI Peripheral) tt_um_multiplexed_clock (Multiplexed clock) tt_um_psychogenic_shaman (Shaman: SHA-256 hasher) tt_um_yubex_metastability_experiment (metastability experiment) Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available