User's Manual

31 P4 I/O Port 4

32 P7 I/O Port 7

33 P6 I/O Port 6

34 UART_TX O Debug UART transmit port

Debug UART receiver port. After power on reset, if

UP_RX =1, firmware download mode UP_RX=0,

normal mode

35 UART_RX I

36 P2 I/O Port 2

37 P21 I/O Port 21

38 RESET_N I Active low system reset with a weak pull up.

39 P3 I/O Port 3

40 P1 I/O Port 1

41 P23 I/O Port 23

42 P22 I/O Port 22

43 P36/SCLK/ADC I/O / O / I Port 36 / SCLK for SPI Interface / Battery Detector Input

44 P8 I/O Port 8

45 P9 I/O Port 9

46 P35/ADC I/O / I Port 35 / Battery Detector Input

47 GND Power System ground

P.S. CS for SPI interface could be configured by any PIOs except module Pin 4, 23,

24,

27 and

43.

Radicom Research, Inc.

reserved