C8051F411-EK C8051F411 EVALUATION KIT USERS GUIDE 1. Kit Contents The C8051F411 Evaluation Kit contains the following items: C8051F411 Evaluation Board Silicon Laboratories Evaluation Kit IDE and Product Information CD-ROM. CD contents include: Silicon Laboratories Integrated Development Environment (IDE) Source code examples and register definition files Documentation C8051F411 demo object code 6 USB Cable 2 AAA Batteries C8051F411 Evaluation Kit Quick Start Guide 2. Kit Overview The C8051F411 Evaluation Kit demonstrates some of the unique features of the C8051F41x family: High-performance 8051 Core Up to 50 MIPS with a 50 MHz system clock derived from the internal oscillator and clock multiplier. Low-voltage Operation Can operate on a core supply voltage as low as 2.0 V. Versatile Interfacing Includes an internal voltage regulator that can supply up to 50 mA at 2.5 V or 2.1 V output. Real Time Clock Can accurately maintain time for up to 137 years as long as the RTC peripheral is powered by at least 1.0 V, even if the MCU core supply voltage is lost. The C8051F411 Evaluation Board includes a USB interface that allows debugging with the Silicon Laboratories IDE. Power for the C8051F411 board can be supplied from the batteries or the USB connection. Refer to 3. Evaluation Board Interface for more details. 3. Evaluation Board Interface The user interface of the C8051F411 Evaluation Board includes an LCD and four push-buttons. There is also a USB port for debugging and downloading to the C8051F411 target device. 3.1. LCD User Interface The C8051F411 Evaluation Board user interface consists of an LCD screen, four buttons, and a switch. The LCD screen displays menu choices and information to the user. The four push buttons, MENU, SELECT, UP, and DOWN, are used to navigate the menus and make selections. The switch determines the power source for the C8051F411 and can be used to switch between the batteries (the left position) and the USB bus (the right position). The C8051F411 Block Diagram shown in Figure 1 shows all elements of the user interface. When the board is powered but idle, the LCD screen will display the time in the upper left corner and cycle through different sets of information, depending upon the operating mode of the board. Refer to 4. Evaluation Modes for more details on the operating modes. The MENU button brings up the menu on the LCD display. When navigating through the menu options, pressing this button will revert back to the beginning of the menu, and none of the changes will be saved. The menu interface is described in 4. Evaluation Modes. Rev. 0.1 2/06 Copyright 2006 by Silicon Laboratories C8051F411-EKC8051F411-EK DEMO PWR C8051F411 EB C8051F411 EB Bottom D3 D2 SW6 DEMO/DEBUG VBAT VDD U10 F321 U8 U7 U6 J1 SoSoffttBaBaugughh F411 U1 U3 U4 U5 SA-TB32-PCB RESET SILICON LABORATORIES Figure 1. C8051F411 Evaluation Board Block Diagram The SELECT, UP, and DOWN buttons are used to navigate through the menus and choose the desired options. These buttons also have special functionality depending upon the current mode. 3.2. Reset Button and LEDs The remaining push button is connected to the RESET pin of the C8051F411. Pressing this button puts the device into its hardware-reset state. Two LEDs are also provided on the evaluation board: D2The bi-color LED indicates communications between the PC and the DEBUG USB port. D3The red LED labeled DEMO PWR indicates a power connection to the evaluation board. 3.3. DEMO/DEBUG Interface (J1) The evaluation board DEMO/DEBUG USB port (J1) provides the interface between a PC USB port and the C8051F411s in-system debug/programming circuitry. 4. Evaluation Modes The C8051F411 Evaluation Board has two modes: Keepsake mode and Demo mode. In Keepsake mode, the F411 uses the 32.768 kHz RTC crystal as the system clock. Demo mode allows the user to vary the internal oscillator and internal voltage regulator configuration. The board is in Keepsake mode upon powerup. 4.1. Keepsake Mode Upon powerup, the evaluation board is in Keepsake mode (see Figure 2). Keepsake mode can be used when the board is powered from the batteries or the USB bus. In Keepsake mode, the device displays the following information: Time (in the upper-right hand corner of the LCD) Date (in the lower section of the LCD) Temperature (in the lower section of the LCD) The time is persistent in the upper right-hand corner. The date (month and day) and temperature will be alternately displayed in the lower section of the LCD. By default, the temperature is displayed in Celsius. Notes: 1. Pressing the UP button while in Keepsake mode will force the LCD to display only the temperature and not the date. Pressing UP again will cause the LCD to switch between the date and temperature as normal. 2. Pressing the DOWN button while in Keepsake mode will switch the display between a 12-hour clock and 24- hour clock. 2 Rev. 0.1 DOWN UP SELECT MENU Battery Holder