Preliminary
...the world's most energy friendly microcontrollers
2010-04-09 - t0005_1.10
30
www.energymicro.com
11 Connectivity
11.1 Resource connections
In general, all ports are routed from the BRD3300A to the prototyping board. That means that Port A on
the EFM is replicated on Port A on the prototyping board. In addition to that, a lot of EFM pins has been
connected to other resources on the board, some using switches and some permanent.
The following table describes the connections between the EFM on the BRD3300A and the kit resources.
Table 11.1. Connections
MCU
MCU function
EFM32_BConnection
EXP32_BProto
port
Function
A0
LCD_SEG13
A1
LCD_SEG14
A2
LCD_SEG15
A3
LCD_SEG16
A4
LCD_SEG17
A5
LCD_SEG18
A6
LCD_SEG19
A9
LCD_SEG37
A15
LCD_SEG12
B0
LCD_SEG32
B1
LCD_SEG33
B2
LCD_SEG34
B3
LCD_SEG20
B4
LCD_SEG21
B5
LCD_SEG22
B6
LCD_SEG23
B7
US1_CLK #0
B53
RS232_A
B53
J4
RS232_A_#CTS
B8
US1_CS #0
B54
RS232_A
B54
J5
RS232_A_#RTS
B11
DAC0_OUT0
B48
AUDIO_OUT
B48
I7
AUDIO_OUT_RIGHT
B12
DAC0_OUT1
B49
AUDIO_OUT
B49
I8
AUDIO_OUT_LEFT
C0
US1_TX #0
B55
RS232_A
B55
J6
RS232_A_TX
C1
US1_RX #0
B52
RS232_A
B52
J3
RS232_A_RX
C2
US2_TX #0
B42
BC_BUS_CONNECT_SPI
B42
H13
BC_BUS26
C3
US2_RX #0
B43
BC_BUS_CONNECT_SPI
B43
H14
BC_BUS27
C4
US2_CLK #0
B40
BC_BUS_CONNECT_SPI
B40
H11
BC_BUS24
C5
US2_CS #0
B41
BC_BUS_CONNECT_SPI
B41
H12
BC_BUS25
C6
LEU1_TX #0
B62
RS232_B
B62
J9
RS232_B_TX
electronic components distributor
