XY PWM

XY-PWM board

Also know as HW-0515

Note: thanks to @plumbum for reverse-engineering, writing board support code and writing initial documentation!

STM8S003F3 pins

                         ____________
                        |            |
[PD4] A               --| 1       20 | -- [PD3/TIM2_CH2] PWM1
[PD5] UART1_TX        --| 2       19 | -- [PD2] Seg B
[PD6] UART1_RX        --| 3       18 | -- [PD1] Seg F
NRST                  --| 4       17 | -- [PC7] Seg D
[PA1] Cathode 3       --| 5       16 | -- [PC6] Seg H / Key Down
[PA2] Seg E / Key Set --| 6       15 | -- [PC5] Seg C
[Vss]                 --| 7       14 | -- [PC4] Seg G / Key UP
[Vcap]                --| 8       13 | -- [PC3/TIM1_CH3] PWM2
[Vdd]                 --| 9       12 | -- [PB4] Cathode 2
[PA3] not connected   --| 10      11 | -- [PB5] Cathode 1
                        |____________|

LED pinout

                         ____________
                        |    _ _     |
                        |   |_|_|    |
             Seg E    --|   '        |-- Cathode 3
             Seg D    --|    _ _     |-- Seg A
             Seg H    --|   |_|_|    |-- Seg F
             Seg C    --|   '        |-- Cathode 2
             Seg G    --|    _ _     |-- Cathode 1
                        |   |_|_|    |-- Seg B
                        |   '        |
                        |____________|

SWIM pins

• 1 NRST [Square pad]
• 2 GND
• 3 SWIM
• 4 +5V