User's Manual

Telit GE863-QUAD / GE863-PY
Hardware User guide
1vv0300715, Rev. ISSUE#0, - 21/02/06
Reproduction forbidden without Telit Communication written authorization – All Right reserved – Right of modification reserved page 21 of 71
Absolute Maximum Ratings -Not Functional
Parameter Min Max
Input level on any
digital pad when on
-0.3V +3.75V
Input voltage on
analog pads when on
-0.3V +3.0 V
Operating Range - Interface levels (2.8V CMOS)
Level Min Max
Input high level V
IH
2.1V 3.3V
Input low level V
IL
0V 0.5V
Output high level V
OH
2.2V 3.0V
Output low level V
OL
0V 0.35V
The signals of the GE863-QUAD/PY serial port are:
RS232
Pin
Number
Signal GE863-
QUAD/PY
Pad Number
Name Usage
1 DCD -
dcd_uart
42 Data Carrier Detect Output from the GE863-QUAD/PY that
indicates the carrier presence
2 RXD -
tx_uart
38 Transmit line *see Note Output transmit line of GE863-QUAD/PY
UART
3 TXD -
rx_uart
37 Receive line *see Note Input receive of the GE863-QUAD/PY
UART
4 DTR -
dtr_uart
39 Data Terminal Ready Input to the GE863-QUAD/PY that
controls the DTE READY condition
5 GND 8-17-28-36-
45-48-50-56
Ground ground
6 DSR -
dsr_uart
43 Data Set Ready Output from the GE863-QUAD/PY that
indicates the module is ready
7 RTS -
rts_uart
40 Request to Send Input to the GE863-QUAD/PY that
controls the Hardware flow control