Data Sheet

FMB110 Datasheet Ver.1.0
-8-
Alternative function:
■ UART RTS
6
PIO61/UART_RX
Digital bidirectional with programable
strength internal pull-up/pull-down
Programmable IO 61, weak pull
down when reset.
Alternative function:
■ UART RX
7
GND
Ground
Ground
8
USB_DP
Digital
USB Full Speed device D- I/O. IEC-
61000-4-2 (device level) ESD
Protection.
9
USB_DN
Digital
USB Full Speed device D- I/O.
IEC-61000-4-2 (device level) ESD
Protection.
10
PIO15/UART_CTS
Digital bidirectional with programable
strength internal pull-up/pull-down
Programmable IO 15, weak pull
down when reset.
Alternative function:
■ UART CTS
11
VBUS
Power input
5V Power supply for USB interface,
must be powered at the same time
as VDD or before it.
If USB is not used, leave this pin
unconnected.
12
SPK_RN
Analog
Headphone/speaker differential right
output, negative.
13
SPK_RP
Analog
Headphone/speaker differential right
output, positive.
14
GND
Ground
Ground.
15
GND
Ground
Ground.
16
VDD
Power input
3.3V power supply for Bluetooth,
digital and analog IOs.
17
RESET
Digital input
Reset the device when pull high
18
PIO3/SCL
Digital bidirectional with programable
strength internal pull-up/pull-down
Programmable IO 3, weak pull down
when reset.
Alternative function:
■ I2C SCL
19
PIO5/SDA
Digital bidirectional with programable
strength internal pull-up/pull-down
Programmable IO 5, weak pull down
when reset. Alternative function:
■ I2C SDA
20
SPK_LN
Analog
Headphone/speaker differential right
output, negative.