EFM32LG900 Datasheet, PDF (17/27 Pages) Silicon Laboratories – Memory Protection Unit

Alternate
Functionality
0
1
USB_VBUSEN PF5
USB_VREGI
USB_VREGI
USB_VREGO
USB_VREGO
...the world's most energy friendly microcontrollers
LOCATION
2
3
4
5
6
Description
USB 5 V VBUS enable.
USB Input to internal 3.3 V regulator
USB Decoupling for internal 3.3 V USB regulator and reg-
ulator output
3.3 GPIO Pinout Overview
The specific GPIO pins available in EFM32LG900 is shown in Table 3.3 (p. 17) . Each GPIO port is
organized as 16-bit ports indicated by letters A through F, and the individual pin on this port is indicated
by a number from 15 down to 0.
Table 3.3. GPIO Pinout
Port
Port A
Port B
Port C
Port D
Port E
Port F
Pin Pin Pin Pin Pin Pin Pin Pin Pin Pin Pin Pin Pin Pin Pin Pin
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
0
PA15 PA14 PA13 PA12 PA11 PA10 PA9 PA8 PA7 PA6 PA5 PA4 PA3 PA2 PA1 PA0
PB15 PB14 PB13 PB12 PB11 PB10 PB9 PB8 PB7 PB6 PB5 PB4 PB3 PB2 PB1 PB0
PC15 PC14 PC13 PC12 PC11 PC10 PC9 PC8 PC7 PC6 PC5 PC4 PC3 PC2 PC1 PC0
PD15 PD14 PD13 PD12 PD11 PD10 PD9 PD8 PD7 PD6 PD5 PD4 PD3 PD2 PD1 PD0
PE15 PE14 PE13 PE12 PE11 PE10 PE9 PE8 PE7 PE6 PE5 PE4 PE3 PE2 PE1 PE0
-
-
-
PF12 PF11 PF10 PF9 PF8 PF7 PF6 PF5 PF4 PF3 PF2 PF1
PF0
3.4 Bonding Instructions
All pads should be bonded out, with the exception of the pads labeled “NC” and listed as “Do not connect”
in Table 3.1 (p. 5) . Gold bond wires are recommended for these devices.
All three voltage regulator output decouple pads (DEC_0, DEC_1, DEC_2) must be bonded out and
electrically connected on the PCB. In the packaged devices, these three pads are all bonded to a single
DECOUPLE pin.
If the USB feature of EFM32LG900 will be used, all of the USB pads must be bonded out, and
• both USB_VREGO_0 and USB_VREGO_1 must be bonded out and electrically connected on the
PCB. In the packaged devices, these two pads are both bonded to a single USB_VREGO pin.
• both USB_VREGI_0 and USB_VREGI_1 must be bonded out and electrically connected on the PCB.
In the packaged devices, these two pads are both bonded to a single USB_VREGI pin.
2015-03-16 - EFM32LG900FXX - d0328_Rev1.20
17
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