4d Systems uCAM-II-76LENS Datenbogen
4D SYSTEMS µCAM-II
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4. Pin Descriptions
5V pin 1 (uCAM-II Supply Voltage Input):
Module supply voltage input pin. This pin must be
connected to a regulated supply voltage.
4.5V to 9.0V DC range, nominal 5.0V.
TX pin 2 (Serial Transmit):
Asynchronous Serial port Transmit pin, TX.
Connect this pin to host Serial Receive (Rx) signal.
The host receives data from the uCAM-II module
via this pin. This pin outputs 3.3V logic.
RX pin 3 (Serial Receive):
Asynchronous Serial port Receive pin, RX. Connect
this pin to host Serial Transmit (Tx) signal. The host
transmits data to the uCAM-II via this pin. This pin
is 3.3V Logic however is 5.0V tolerant.
GND pin 4 (uCAM-II Ground):
Module ground pin. This pin must be connected to
ground.
5. Serial Interface - UART
The uCAM-II has a dedicated hardware UART that
can communicate with a host via this serial port.
This is the main interface used by the host to
communicate with the module to send commands
and receive back data. The primary features are:
can communicate with a host via this serial port.
This is the main interface used by the host to
communicate with the module to send commands
and receive back data. The primary features are:
• Full-Duplex 8 bit data transmission and
reception through the TX and RX pins.
• Data format: 8 bits, No Parity, 1 Stop bit.
• Auto detect specific Baud rates from 9600
• Auto detect specific Baud rates from 9600
baud up to 921600 baud.
• Selectable Baud rates up to 3686400 bps.
The uCAM-II has low voltage serial TTL levels
which can be directly interfaced to a micro-
controller. The voltage levels could be converted
to RS-232 through an external TTL to RS-232
converter to interface it to any RS-232 port such as
the one on the PC.
Please note that while the baud rate can go up to
3686400 bps, not all RS232/RS485/TTL USB
adaptors/cables can go this high. Please ensure
your hardware can handle the rate you want to
use.
Please refer to sections 5.3 and 5.4 for more
information.
5.1. Single Byte Timing
A single byte serial transmission consists of the
start bit, 8-bits of data followed by the stop bit.
The start bit is always 0, while a stop bit is always
1. The LSB (Least Significant Bit, Bit 0) is sent out
first following the start bit. Figure 3.1 shows a
single byte transmission timing diagram.
start bit, 8-bits of data followed by the stop bit.
The start bit is always 0, while a stop bit is always
1. The LSB (Least Significant Bit, Bit 0) is sent out
first following the start bit. Figure 3.1 shows a
single byte transmission timing diagram.
Figure 3.1: Single Byte Timing Diagram
5.2. Command Sequence Timing
A single command consists of 6 continuous single
byte serial transmissions. The following Figure 3.2
shows an example of the SYNC (AA0D00000000h)
command.
byte serial transmissions. The following Figure 3.2
shows an example of the SYNC (AA0D00000000h)
command.