Data Sheet

Bluegiga Technologies Oy
Page 10 of 44
USB Interfaces
PIN
NUMBER
PAD TYPE DESCRIPTION
USB+ 17 Bidirectional
USB data plus with selectable internal 1.5k
pull-up resistor
USB- 18 Bidirectional USB data minus
Table 5: USB Terminal Descriptions
SPI
INTERFACE
PIN
NUMBER
PAD TYPE DESCRIPTION
SPI_MOSI 40
CMOS input with weak
internal pull-down
SPI data input
SPI_CS# 37
CMOS input with weak
internal pull-up
Chip select for Serial Peripheral
Interface, active low
SPI_CLK 38
CMOS input with weak
internal pull-down
SPI clock
SPI_MISO 39
CMOS output, tristate,
with weak internal pull
down
SPI data output
Table 6: Terminal Descriptions