UNICORECOMM UM980 User Manual

UM980 User Manual
10 Hardware UC-00-M32 EN R1.0
No.
Pin
I/O
Description
24
NC
—
No internal connections
25
NC
—
No internal connections
26
RXD2
I
COM2 receiving data, LVTTL level
27
TXD2
O
COM2 transmitting data, LVTTL level
28
BIF
—
Built-in function; recommended to add a
through-hole testing point and a 10 kΩ pull-
up resistor; cannot connect ground or power
supply, and cannot be peripheral I/O, but can
be floating
29
BIF
—
Built-in function; recommended to add a
through-hole testing point and a 10 kΩ pull-
up resistor; cannot connect ground or power
supply, and cannot be peripheral I/O, but can
be floating
30
TXD3
O
COM3 transmitting data, LVTTL level,
can be used as CAN TXD
31
RXD3
I
COM3 receiving data, LVTTL level,
can be used as CAN RXD
32
GND
—
Ground
33
VCC
I
Power supply
34
VCC
I
Power supply
35
RSV
—
Reserved
36
V_BCKP
I
When the main power supply VCC is cut off,
V_BCKP supplies power to RTC and relevant
register. Level requirements: 2.0 V ~ 3.6 V,
and the working current is less than 60 μA at
25 °C. When the hot start function is not
used, V_BCKP can be connected to
VCC/ground, or floating.

UNICORECOMM UM980 Specifications

General

Brand	UNICORECOMM
Model	UM980
Category	Control Unit
Language	English