C8051F411EK Silicon Laboratories Inc, C8051F411EK Datasheet - Page 2

• Manufacturer Part Number: C8051F411EK
• Description: KIT EVAL FOR C8051F411
• Manufacturer: Silicon Laboratories Inc
• Type: MCUr

Specifications of C8051F411EK

• Contents: Evaluation Board, CD-ROM, USB Cable, Batteries and User Guide
• Processor To Be Evaluated: C8051F41x
• Interface Type: USB
• Silicon Manufacturer: Silicon Labs
• Core Architecture: 8051
• Silicon Core Number: C8051F411
• Silicon Family Name: C8051F41x
• Kit Contents: LCD Based Evaluation Board, USB Cable, Software CD And Quick-Start Guide
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With/related Products: Silicon Laboratories C8051F41x
• For Use With: 336-1315 - KIT REF DESIGN VOICE RECORD F41X
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 336-1317

C8051F411-EK
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:
3.3. DEMO/DEBUG Interface (J1)
The evaluation board DEMO/DEBUG USB port (J1) provides the interface between a PC USB port and the
C8051F411’s 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:
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:
2
D2–The bi-color LED indicates communications between the PC and the DEBUG USB port.
D3–The red LED labeled “DEMO PWR” indicates a power connection to the evaluation board.
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)
1. Pressing the UP button while in Keepsake mode will force the LCD to display only the temperature and not
2. Pressing the DOWN button while in Keepsake mode will switch the display between a 12-hour clock and 24-
DEMO/DEBUG
the date. Pressing UP again will cause the LCD to switch between the date and temperature as normal.
hour clock.
DEMO PWR
D3
J1
U10
U1
RESET
“F411”
F321
D2
SILICON LABORATORIES
C8051F411 EB
VBAT
Figure 1. C8051F411 Evaluation Board Block Diagram
VDD
U8
U3
SW6
U7
U4
SoftBaugh
SoftBaugh
U6
U5
Rev. 0.1
C8051F411 EB Bottom
SA-TB32-PCB