User's Manual

TOBY-R2 series - Data Sheet
UBX-16005785 - R06 Pin definition
Page 18 of 41
No
Name
Power
domain
I/O
Description
Remarks
1
RSVD
-
N/A
RESERVED pin
Leave unconnected.
2
GND
GND
N/A
Ground
All GND pins must be connected to ground.
3
V_BCKP
-
I/O
RTC supply Input/ Output
1.8 V (typical) generated by the module when VCC
supply voltage is within valid operating range.
See section 4.2.2 for detailed electrical specs.
4
VUSB_DET
VBUS
I
VBUS USB detect input
VBUS (5 V typical) USB supply generated by the host
must be connected to this input pin to enable the USB.
See section 4.2.11 for detailed electrical specs.
5
V_INT
GDI
O
Generic Digital Interfaces
supply output
1.8 V (typical) generated by the module when it is
switched-on and with the RESET_N is not forced low.
See section 4.2.2 for detailed electrical specs.
6
RSVD
-
N/A
RESERVED pin
This pin has special function: it must be connected to
GND to allow module to work properly.
7
RSVD
-
N/A
RESERVED pin
Leave unconnected.
8
RSVD
-
N/A
RESERVED pin
Leave unconnected.
9
RSVD
-
N/A
RESERVED pin
Leave unconnected.
10
DSR
GDI
O /
I/O
UART data set ready /
GPIO
Circuit 107 (DSR) in ITU-T V.24.
Output driver class A. PU/PD class a.
Value at internal reset: T/PU.
See section 4.2.13 for detailed electrical specs.
11
RI
GDI
O /
I/O
UART ring indicator /
GPIO
Circuit 125 (RI) in ITU-T V.24.
Output driver class A. PU/PD class a.
Value at internal reset: T/PD.
See section 4.2.13 for detailed electrical specs.
12
DCD
GDI
O /
I/O
UART data carrier detect /
GPIO
Circuit 109 (DCD) in ITU-T V.24.
Output driver class A. PU/PD class a.
Value at internal reset: T/PD.
See section 4.2.13 for detailed electrical specs.
13
DTR
GDI
I /
I/O
UART data terminal ready
/ GPIO
Circuit 108/2 (DTR) in ITU-T V.24.
Internal active pull-up to V_INT enabled. PU/PD class a
Value at internal reset: T/PU.
See section 4.2.13 for detailed electrical specs.
14
RTS
GDI
I
UART ready to send
Circuit 105 (RTS) in ITU-T V.24.
Internal active pull-up to V_INT. PU/PD class a.
Value at internal reset: T/PU.
See section 4.2.13 for detailed electrical specs.
15
CTS
GDI
O
UART clear to send
Circuit 106 (CTS) in ITU-T V.24.
Output driver class A. PU/PD class a.
Value at internal reset: T/PU.
See section 4.2.13 for detailed electrical specs.
16
TXD
GDI
I
UART data input
Circuit 103 (TxD) in ITU-T V.24.
Internal active pull-up to V_INT. PU/PD class a.
Value at internal reset: T/PD.
See section 4.2.13 for detailed electrical specs.
17
RXD
GDI
O
UART data output
Circuit 104 (RxD) in ITU-T V.24.
Output driver class A. PU/PD class a.
Value at internal reset: T/PU.
See section 4.2.13 for detailed electrical specs.
18
RSVD
-
N/A
RESERVED pin
Leave unconnected.
Test-Point for diagnostic access is recommended.
19
RSVD
-
N/A
RESERVED pin
Leave unconnected.
Test-Point for diagnostic access is recommended.
20
PWR_ON
POS
I
Power-on input
Internal 10 k pull-up resistor to V_BCKP.
See section 4.2.8 for detailed electrical specs.