your position is our focus
A.1 Migration from TIM-LR to TIM-4R pin out
The
pin-outs
of
TIM-LR
and
TIM-4R
modules
do
not
differ
significantly.
Table 25
compares
the
modules
and
highlights
the
differences
to
be
considered.
TIM-LR
TIM-4R
Remarks
Pin
Pin
Name
Typical
Assignment
Pin
Name
Typical
Assignment
1 VCC
2.70
–
3.30V
VCC
2.70
–
3.30V
No
difference
2 GND
GND
GND
GND
No
difference
3 BOOT_INT
NC
BOOT_INT
NC
No
difference
4 RXD1
3.0V
in;
pull
up
to
VCC
if
not
used
RXD1
1.8
-
5.0V
in
Do
not
add
an
external
pull
up
resistor;
there
is
one
built-in
to
V_BAT18
.
Leave
open
if
not
used.
5 TXD1
3.0V
out
TXD1
3.0V
out
No
difference
6 TXD2
3.0V
out
TXD2
3.0V
out
No
difference
7 RXD2
3.0V
in;
pull
up
to
VCC
if
not
used
RXD2
1.8
-
5.0V
in
Do
not
add
an
external
pull
up
resistor;
there
is
one
built-in
to
V_BAT18
.
Leave
open
if
not
used.
8 FWD
1.8V
I/O
(LP:
3.0V),
not
connected
FWD
3.0V
I/O
Apply
direction
signal
9 STATUS
1.8V
I/O
(LP:
3.0V),
not
connected
EXTINT1
3.0V
I/O,
not
connected
Status
Pin
not
available
anymore;
No
difference
otherwise.
10 VDD18_OUT
Not
connected
VDD18OUT
Not
connected
No
difference
11
to
16
GND
GND
GND
GND
No
difference
17 RF_IN
RF_IN
RF_IN
RF_IN
No
difference
18 GND
GND
GND
GND
No
difference
19 V_ANT
3.0V
-5.0V
V_ANT
3.0V
-5.0V
No
difference
20 VCC_RF
VCC
-
0.1V
VCC_RF
VCC
-
0.1V
No
difference
21 V_BAT
1.95
–
3.6V
V_BAT
1.50
–
3.6V
Wider
voltage
range.
Uncritical
for
migration.
22 RESET_N
(1.8V)input
RESET_N
1.8V
No
difference.
Don’t
drive
high.
Refer
to
ANTARIS
®
4
System
Information
Manual
[5]
for
more
information.
23 EXTINT0
Not
connected
EXTINT0
Not
connected
No
difference
24 PCS1_N
PCS1_N
25 PCS0_N
PCS0_N
26 SCK
1.8V
I/O
SCK
3.0V
I/O
27 MISO
Not
connected
MISO
Not
connected
28 MOSI
1.8V
I/O
(LP:
3.0V)
MOSI/
P24
3.0V
I/O
Different
voltage
level
29 TIMEPULSE
1.8V
out
(LP:
3.0V)
TIMEPULSE
3.0V
out
Same
functionality
but
different
output
voltage.
30 AADET_N
1.8V
I/O
(LP:
3.0V),
not
connected
AADET_N
3.0V
I/O,
not
connected
Different
voltage
level
J
:
Pins
to
be
checked
carefully
Table 25: Pin-out comparison TIM-LR vs. TIM-4R
LEA-4R
/
TIM-4R
-
System
Integration
Manual
/
Reference
Design
Migration
from
TIM-LR
to
TIM-4R
GPS.G4-MS4-05043
Page 37