User's Manual

FLC-BTM403 Datasheet
Flaircomm Microelectronics Confidential
-10-
3. Pin Definition
3.1 Pin Configuration
Figure 2: Pin Configuration
3.2 Pin Definition
Pin
Symbol
I/O Type
Description
1
GND
Ground
Ground
2
VDD
3V3 power input
3V3 power input
3
PIO2
Bi-directional with
programmable strength internal
pull-up/down
Programmable input/output line
4
PIO3
Bi-directional with
programmable strength internal
pull-up/down
Programmable input/output line
5
UART_RTS
CMOS output, tri-state, with
weak internal pull-up
UART request to send active low
6
UART_RX
CMOS input with weak internal
pull-down
UART data input
7
PCM_OUT
Bi-directional
Synchronous Data Output