F&S armStoneA5, Техническая документация, Страница: 17 / 23

13
4.12.1
Audio
The feature connector provides Stereo Line in, Stereo Line out and microphone.
4.12.2
RS232 COM port
A 9 pin double row connector is mounted in pin 53..61. That allows to attach a standard 9pin
to DSUB9 adapter cable for debug output of bootloader and kernel with TX, RX, RTS and
CTS to a terminal.
Pin 1 of this adapter should connect on pin 53 of the 66 pin connector. Pin 62 is the key pin
and should be removed.
On pin 36 & 38 is a second RS232 COM port (RXD2/TXD2).
4.12.3
TTL COM port
There is additional serial port with 3.3V TTL level (RXD1/TXD1).
4.12.4
SPI
The module supports a HS SPI (Serial Peripheral Interface) with 2 chip selects. Signals are
3.3V compliant and have 4.7k pull-ups on module.
4.12.5
I2C
The module supports a I2C interface as I2C master. Signals are 3.3V compliant and have
4.7k pull-ups on module.
4.12.6
ADC In
4 ADC inputs (ADC_IN0..3)

Resolution: 12-bit

Differential Nonlinearity Error: ± 1.0 LSB (Max.)

Integral Nonlinearity Error: ± 4.0 LSB (Max.)

Maximum Conversion Rate: 0.5 MSPS

Analog Input Range: 0 ~ 3.3V

On-chip sample-and-hold function
4.12.7
PWM out
3 programmable PWM outputs (PWMOUT0..2) with 3.3V level in 16.1kHz up to 33 MHz fre-
quency range
4.12.8
Matrix keyboard
8x8 keyboard matrix (ROW0..7, COL0..1) with 3.3V level. The ROW signals have 4.7k pull-
ups on module.