PICDEM 4 User's Guide
The PICDEM 4 demonstration board showcases the capabilities of 8‑, 14‑ and 18‑pin PIC16XXXX and PIC18XXXX microcontrollers. It can be used as a stand‑alone board, with an In‑Circuit Emulator, or with an In‑Circuit Debugger, and includes sample programs and a CD‑ROM with application notes.
The manual covers hardware specifications, step‑by‑step getting‑started procedures, a tutorial program, and detailed appendices describing the board’s connectors, LEDs, switches, power supply, and optional components. Reference documents and contact information for Microchip sales offices are also provided.
| DIP sockets | 8‑, 14‑ and 18‑pin (one device at a time) |
|---|---|
| Power regulator | On‑board +5 V regulator, accepts 9 V or 5 V 100 mA supply |
| Serial interface | RS‑232 connection |
| LEDs | Eight red LEDs on PORTA/PORTB and one green power‑on LED |
| Display | 2 × 16 LCD display |
| Real‑time clock crystal | 32.768 kHz crystal for Timer1 RTC |
| I/O expander | PIC16LF72 I/O expander |
| Supercapacitor circuitry | Included on board |
The board supports 8‑, 14‑ and 18‑pin PIC16XXXX and PIC18XXXX microcontrollers, but only one device can be installed at a time.
It has an on‑board +5 V regulator that can be powered from a 9 V AC/DC wall adapter, a 9 V battery, or a regulated 5 V 100 mA DC supply.