GBS Elektronik MCA-527 User Manual
Page 26
MCA527
Table 8:
Pinout of the Power Connector (JST B6B-PH-K-S)
Contact
Signal
Top View
1
V
in
input voltage (3.3V...9V)
2
GND
3
GND
4
V
RTC
3.3V power supply for
real time clock
5
SDA
I
2
C-interface data line
6
SCL
I
2
C-interface clock line
Table 9:
Pinout of the OEM Extension Connector (Male Header 2 x 13, Pitch 1.27mm)
Contact
Signal
Top View
1
shield extension port
2
shield RS232 interface
3
RxD
ext
RS232 extension port
4
RxD
RS232 interface
5
GND
ext
extension port
6
GND RS232 interface
7
TxD
ext
RS232 extension port
8
TxD
RS232 interface
9, 10, 13, 15
not connected
11, 12, 17, 18,
23, 24
GND
14
SDA I
2
C-interface data line
16
SCL
I
2
C-interface clock line
19
O1
ext
/ TxD
extTTL
(output)
20
3.3V / 100mA power output
21
I1
ext
/ RxD
extTTL
(input)
22
O2
ext
(output)
25
I2
ext
(input)
26
5V
ext
/ 100mA power output
6 USB version works only with voltages between 4.5V and 9V.
7 V
RTC
, SDA and SCL are currently not present at this connector.
26