EK-W79E21JN is a simulation learning kit designed by Manley Electronics Co., Ltd. for beginners to learn and develop Winbond W79E21x/22x series 8051, with simulation, debugging and download functions.
The EK‑W79E21JN simulation learning kit is designed by Manley Electronics for beginners to learn, develop and debug Winbond W79E21x/22x series 8051 MCUs. It combines a JTAG‑enabled core MCU, LCD displays, buzzer, relay, LEDs, UART, analog inputs and other interfaces, together with MedWinV3 and IAR EW8051 development environments.
The manual describes the package contents, hardware functions, connector and jumper assignments, and includes schematic diagrams of the board. It also details power supply via USB, JTAG debugging, and how to configure the kit for use as a simulator or as a development platform. This manual is written in Chinese.
| Core MCU | W79E21J |
|---|---|
| Clock | 11.0592 MHz crystal |
| LCD Displays | Two 64‑segment alphanumeric LCDs |
| UART Ports | Two DB9 UART connectors (UART0, UART1) |
| Real‑Time Clock | Battery‑backed RTC |
| GPIO LEDs | Four GPIO‑controlled LEDs (comparator/PWM output) |
| Joystick | Five‑direction joystick input |
| Analog Inputs | Two potentiometer (voltage) inputs |
| Relay Output | One SPDT relay (NO/NC) |
| USB Interface | USB 2.0 full‑speed, bus‑powered |
| JTAG Debugger | Integrated JTAG emulator for Winbond W79E series |
The kit supports the MedWinV3 integrated development environment and the IAR EW8051 development environment.
The kit is powered via the USB 2.0 full‑speed connection, which also supplies power to the JTAG emulator.
The board provides USB, JTAG, two DB9 UART ports, RS‑232 level interfaces, two LCD displays, a five‑direction joystick, analog potentiometers, LEDs, a buzzer and a relay.