176 LED Matrix Driver

176 : LED Matrix Driver

Design render
  • Author: Michael Bella
  • Description: Serial data input 8x8 common anode led matrix driver.
  • GitHub repository
  • Clock: 10000000 Hz

How it works

Uses a set of registers to divide the clock, and then some combinational logic to convert from binary to decimal for the display.

Puts the bottom 8 bits of the counter on the bidirectional outputs.

With all the inputs set to 0, the internal 24 bit compare is set to 10,000,000. This means the counter will increment by one each second.

If any inputs are non zero, then the input will be used as an bits 11 to 18 of the 24 bit compare register. Example: setting the inputs to 00010000 will program 16384 into the compare register. With a 10MHz clock the counter will increment ~610 times per second.

How to test

After reset, the counter should increase by one every second with a 10MHz input clock. Experiment by changing the inputs to change the counting speed.

IO

#InputOutputBidirectional
0compare bit 11segment asecond counter bit 0
1compare bit 12segment bsecond counter bit 1
2compare bit 13segment csecond counter bit 2
3compare bit 14segment dsecond counter bit 3
4compare bit 15segment esecond counter bit 4
5compare bit 16segment fsecond counter bit 5
6compare bit 17segment gsecond counter bit 6
7compare bit 18dotsecond counter bit 7

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 04 Factory Test) tt_um_vga_clock (VGA clock) tt_um_seven_segment_seconds (7 segment seconds) tt_um_marno_factorize (Number Factorizer) tt_um_sorter (Odd even sorter) tt_um_bulls_and_cows (The Bulls and Cows game) tt_um_loopback (TinyTapeout 04 Loopback Test Module) tt_um_devinatkin_arduino_vga (VGA Output for Arduino) tt_um_wokwi_371604537887211521 (Digital Cipher & Interlock System) tt_um_urish_simon (Simon Says game) tt_um_wokwi_372184284115580929 (YKM 7-seg driver) tt_um_currymottled (Configurable PID Block) tt_um_yeokm1_pwm_audio (PWM audio) tt_um_dcb277_ALU (4-bit ALU) tt_um_rgb_mixer (RGB Mixer) tt_um_loopback (TinyTapeout 04 Loopback Test Module) tt_um_algofoogle_raybox_zero (raybox-zero) tt_um_morningjava_top (ChipTune) tt_um_loopback (TinyTapeout 04 Loopback Test Module) tt_um_eldritch_pwm_peripheral (OpenSource PWM Peripheral) tt_um_phansel_laplace_lut (Experiment Number Six: Laplace LUT) tt_um_ks_pyamnihc (Karplus-Strong String Synthesis) tt_um_dlmiles_tt04_poc_usbdev (USB Device) tt_um_thorkn_pwmaudio (Audio-PWM-Synth) tt_um_wokwi_374029622762967041 (German Traffic Light) tt_um_dandy_dance (Dandy VGA) tt_um_robojan_top (Tiny Breakout) tt_um_vc_cpu (VC 16-bit CPU) tt_um_MichaelBell_nanoV (Risc-V Nano V) tt_um_urish_usb_cdc (USB CDC (Serial)) tt_um_tiny_processor (Tiny processor) tt_um_f_hal_fft (fft-4-tt) tt_um_tomkeddie_a (LED Panel Driver) tt_um_wokwi_370722051572189185 (OSU Counter) tt_um_wokwi_370796071922577409 (Even digits) tt_um_wokwi_370709383347782657 (Traffic light) tt_um_wokwi_371425977920989185 (Tutorial4) tt_um_riceshelley_tinyFPGA (Grain-Flex-FPGA) tt_um_mgyenik_bfcpu (BFCPU) tt_um_machinaut_systolic (AI Decelerator) tt_um_wokwi_374140166551523329 (Tiny (3-bit) LFSR) tt_um_jk2102 (Pulsed Plasma Thruster (PPT) Controller) tt_um_jayraj4021_SAP1_cpu (SAP-1 CPU) tt_um_wokwi_370533670565165057 (Impulse counter) tt_um_ashleyjr_delay_line (Delay Line) tt_um_simplepiano (Simple Piano) tt_um_wokwi_374292646686728193 (Ripple-Carry Adder) tt_um_led_multiplexer_display (Led Multiplexer Display) tt_um_mjbella_led_matrix_driver (LED Matrix Driver) tt_um_fifo_stevej (8-bit FIFO with depth 16.) tt_um_robojan_pong_top (Pong) tt_um_wokwi_374962052813090817 (8 panel display"") tt_um_wokwi_370690644715216897 (Traffic Light) tt_um_wokwi_374494377414857729 (Model Railway turntable polarity controller) tt_um_wokwi_347144898258928211 (Customizable UART string tx) tt_um_wokwi_347497504164545108 (7-Seg 'Tiny Tapeout' Display) tt_um_wokwi_347140425276981843 (UART character tx) tt_um_wokwi_347417602591556180 (Padlock) tt_um_noritsuna_8bitcounter_AI (8bits Counter by AI) tt_um_fm_transmitter (FM Transmitter) tt_um_wokwi_369864099838656513 (Test 4x4 memory) tt_um_htfab_rotfpga2 (ROTFPGA v2) tt_um_losaias (Arithmetic logic unit of four operations between two 8-bit numbers) tt_um_fir_top (FIR Filter) tt_um_santacrc_tamagotchi (Tamagotchi) tt_um_4_LUT_Baungarten (LFMPDM (Lightning Fast Matrix Programmable Design Module)) tt_um_RELOG_10M_Juan_Garcial (7 SEGMENTS CLOCK) tt_um_MultiPatternLEDSequencer_RSYO3000 (Multi Pattern LED Sequencer) tt_um_pwm (Generador de PWM) tt_um_chip_SP_measure_delay (Multi stage path for delay measurements.) tt_um_chip_SP_Soy_de_Zacapa (ASCII Text Printer Circuit) tt_um_fing_synchronizer_hga (Clock synchronizer) tt_um_db_PWM (Simple PWM Generator) tt_um_RS_Vfreq (CLK Frequency Divider) tt_um_ja_TrafficLight (UIS Traffic Light) tt_um_adder_NestorMatajira (4 bit adder ) tt_um_ALU_NicolasOrcasitas (8-bit ALU) tt_um_ccollatz_SergioOliveros (Collatz Conjecture) tt_um_wokwi_370011087462055937 (8 bit 4 data sorting network) tt_um_wokwi_374968111036708865 (BCD to 7 segments) tt_um_wokwi_374967675785369601 (4 bit full adder) tt_um_wokwi_374974793636964353 (Circuito Religioso) tt_um_wokwi_374815911155542017 (Demultiplexor NAND) tt_um_wokwi_374903567624066049 (Sumador/Sustractor de 3 bit con acarreo y prestamo) tt_um_wokwi_374515580784897025 (Hardware Lock) tt_um_wokwi_374909346558831617 (Custom falling and rising edge detection) tt_um_alu (4-bit-alu) tt_um_pong_neopixel (Angardo's pong) tt_um_LEOGLM_hamming_code_top ((11,7) hamming code encoder and decoder with UART) tt_um_adriannovosel_top (Impulse counter) tt_um_wokwi_374969806854695937 (State machine of an impulse counter) tt_um_wokwi_375061599421794305 (Logic Circuit 1) tt_um_biased_trng (Variable Duty-Cycle TRNG) tt_um_top (Modem Multimodo) tt_um_wokwi_372347167704674305 (SAR ADC Backend) tt_um_wokwi_375176944142127105 (FCFM 7-segment display) tt_um_rodrigomunoz1_rotempsensor_top (another ring oscillator based temperature sensor) tt_um_USM_temp_sens_hyst (RO-based temperature sensor with hysteresis) tt_um_FSM (Microrobotics FSM) tt_um_wokwi_375042398768251905 (MINI ALU) tt_um_wokwi_374778387606763521 (PWM Quisquilloso) tt_um_CPU (CPU 8 bit) tt_um_simple_processor_pablopabota (A Risc-V Instruction memory i2c programmer) tt_um_wokwi_375246321309880321 (IFSC 6-bit Locker) tt_um_wokwi_375217288209912833 (Randomizer and status checker) tt_um_wokwi_375245713375900673 (Simulador de cruzamento de semáforo) tt_um_wokwi_374636462642973697 (Full_adder_carry_juang_garzons) tt_um_ternaryPC_radixconvert (4-trit balanced ternary program counter and convertor) tt_um_darkfsegura_collatz (uDATAPATH_Collatz) tt_um_wokwi_375174630101280769 (Adder) tt_um_wokwi_375163050120587265 (Binary to 7 segment) tt_um_wokwi_375165100039571457 (Neuron) tt_um_silva (Later) tt_um_shift (serializer) tt_um_alu4_alonso59 (4-bits 1-channel PWM and ALU 4 bits) tt_um_mod_u_cnt_BCD (up-down counter with parallel load and BCD output) tt_um_ciro (Later) tt_um_control (Contador con carga) tt_um_onehot (onehot_decoder) tt_um_santiago (CDMA Transmitter/Receiver) tt_um_divider_urielcho (clock divider) tt_um_pwl_RaulprTech (reciprocal) tt_um_fabian (Later) tt_um_thezoq2_tmng (Time Multiplexed Nand-gate) tt_um_uninorte (Octal classifier) tt_um_dlmiles_muldiv4 (MULDIV unit (4-bit signed/unsigned)) tt_um_rs_write_decodifier_fjrn_cinvestav (RS Write Decodifier) tt_um_BounceFSM_RSX92 (Password FSM) tt_um_priority_decoder_Juan_Garcial (Priority e) tt_um_FreqMeter_Juan_Garcial (frecuencimeter) tt_um_sahrdayalfsr (lfsr random number generator) tt_um_i2c (i2c_6 bits) tt_um_wokwi_375227079413963777 (Fastest Finger) tt_um_wokwi_375300958229329921 (Fastest Finger (Clocked)) tt_um_zeptobars (Oscillators II) tt_um_rebot449_lingret_ALU_Top (Simple ALU) tt_um_loopback (TinyTapeout 04 Loopback Test Module) tt_um_wokwi_375288605206694913 (Adjustable Frequency LED Chaser) tt_um_wokwi_375310871188385793 (Simple QSPI DAC) tt_um_quardinlyttle_top (AQALU) tt_um_wokwi_375326293008530433 (Simple TMR) tt_um_chiplet_jtag (Poor Person's Boundary Scan) tt_um_wokwi_375248885704300545 (Probador de lógica básico) tt_um_rejunity_telluride2023_neuron (LIF Neuron, Telluride 2023) tt_um_kpwebb_adder (rusty_adder) 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 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