User's Manual

Cinterion
®
ELS61-AUS Hardware Interface Description
2.1 Application Interface
52
 ELS61-AUS_HID_v00.031 2016-06-03
Confidential / Preliminary
Page 21 of 102
GPIO
interface
GPIO1-GPIO3 IO
V
OL
max = 0.25V at I = 1mA
V
OH
min = 1.55V at I = -1mA
V
OH
max = 1.85V
V
IL
max = 0.35V
V
IH
min = 1.30V
V
IH
max = 1.85V
If unused keep line open.
Please note that most
GPIO lines can be config-
ured by AT command for
alternative functions:
GPIO1-GPIO3: ASC0
control lines DTR0,
DCD0 and DSR0
GPIO4: Fast shutdown
GPIO5: Status LED line
GPIO6/GPIO7: PWM
GPIO8: Pulse Counter
GPIO16-GPIO19: ASC1
or SPI
GPIO24: ASC0 control
line RING0
GPIO4 IO
GPIO5 IO
GPIO6 IO
GPIO7 IO
GPIO8 IO
GPIO11-
GPIO15
IO
GPIO16-
GPIO19
IO
GPIO20-
GPIO23
IO
GPIO24 IO
Status LED LED O
V
OL
max = 0.25V at I = 1mA
V
OH
min = 1.55V at I = -1mA
V
OH
max = 1.85V
If unused keep line open.
Note that the LED line is
originally available as
GPIO line. If configured
as LED line, the GPIO
line is assigned as fol-
lows:
GPIO5 --> LED
PWM PWM1 O
V
OL
max = 0.25V at I = 1mA
V
OH
min = 1.55V at I = -1mA
V
OH
max = 1.85V
If unused keep lines
open.
Note that the PWM lines
are originally available as
GPIO lines. If configured
as PWM lines, the GPIO
lines are assigned as fol-
lows:
GPIO7 --> PWM1
GPIO6 --> PWM2
PWM2 O
Pulse
counter
COUNTER I Internal up resistor active
V
IL
max = 0.35V at < -200µA
V
IH
min = 1.30V at > -50µA
V
IH
max = 1.85V
If unused keep line open.
Note that the COUNTER
line is originally available
as GPIO line. If config-
ured as COUNTER line,
the GPIO line is assigned
as follows:
GPIO8 --> COUNTER
ADC
(Analog-to-
Digital Con-
verter)
ADC1 I R
I
= 1MΩ
V
I
= 0V ... 1.2V (valid range)
V
IH
max = 1.2V
Resolution 1024 steps
Tolerance 0.3%
ADC can be used as
input for external mea-
surements.
If unused keep line open.
Table 2: Signal properties
Function Signal name IO Signal form and level Comment