JADAK a business unit of Novanta Corporation SM-MN-SH User Manual
20
9
Host Interface Specifications
The M1-Mini is supplied with TTL serial as the standard host interface. SPI and I
2
C host interface types are available
with separate firmware.
9.1
TTL Serial
TTL signal levels of 0 to 3V are used to interface the M1-Mini to a host device. A three-wire serial connection is
provided. The M1-Mini does not support RTS and CTS handshaking signals therefore Hardware Flow Control is not
available.
Figure 5: TTL Connection: M1-Mini to Host
•
In addition to the signal connections, the host must supply input voltage.
•
The serial baud rate of the M1-Mini is software selectable. The following table shows the selectable Baud
rates.
4800 bits/sec
N,8,1
+/- 0.3% error
9600 bits/sec
N,8,1
+/- 0.3% error
19200 bits/sec
N,8,1
+/- 0.3% error
38400 bits/sec
N,8,1
+/- 0.3% error
57600 bits/sec
N,8,1
+/- 1.9% error
NOTE
– N,8,1 means No Parity Bit, 8 Data Bits, 1 Stop Bit.