UPIO-M3U1XX Datasheet, PDF (5/28 Pages) Silicon Laboratories – The Unified Development Platform (UDP) provides a development

UPIO-M3U1xx
Piezo Speaker
Specialty
LEDs
Port Bank
Headers
External Regulator
(EXTVREG) Circuit
Prototype
Area
EBID MCU
7-segment
Displays
Push-Button
Switches
LEDs
Joystick Switch
Figure 4. UPIO-M3U1xx I/O Card Features
4.1. 7-Segment Displays
The I/O card has two 7-segment displays driven by a Silicon Labs C8051F990 MCU. The C8051F990 is powered
by the UDP motherboard and communicates to a UDP MCU card via I2C through the UDP connector.
Debug connections to the C8051F990 are available via the J8 header. Table 2 shows the header connections.
Table 1. J8 Header Connections
J8 Pin Number
1
2
3
4
J8 Pin Description
C8051F990 VDD pin (PWR_SYS_BULK)
C8051F990 C2CK
C8051F990 C2D
GND
Rev. 0.1
5