XR21V1414IM48 EXAR [Exar Corporation], XR21V1414IM48 Datasheet - Page 7

• Manufacturer Part Number: XR21V1414IM48
• Description: 4-CH FULL-SPEED USB UART
• Manufacturer: EXAR [Exar Corporation]

REV. 1.0.0
Pin Description
N
Ancillary Signals
OTE
LOWPOWER
: Pin type: I=Input, O=Output, I/O= Input/output, OD=Output Open Drain.
N
GND
VCC
SCL
AME
32, 40, 41
5, 18, 33,
48-QFN
1, 4, 19,
44, 45
P
36
IN
2
#
T
Pwr
Pwr
YPE
O
I
I
EEPROM is connected. An optional external I
to store default configurations upon power-up including the USB Vendor
ID and Device ID.
If an EEPROM is not used, this pin can be used with the SDA pin to select
the Remote Wake-up and Power modes. An external pull-up or pull-down
resistor is required. See
Low power status output. This pin is HIGH when the XR21V1414 is in the
suspend mode. This pin is LOW when the XR21V1414 is not in the sus-
pend mode. An external pull-up or pull-down resistor is required on this
pin. This pin is sampled upon power-on to configure the polarity of the
LOWPOWER output during suspend mode. An external pull-up resistor
will cause the LOWPOWER pin to be HIGH during suspend mode. An
external pull-down resistor will cause the LOWPOWER pin to be LOW dur-
ing suspend mode.
+3.3V power supply. All inputs are 5V tolerant.
Power supply common, ground.
2
C-controller serial input clock. 1K pull-up resistor is required if an
7
Table 1
D
ESCRIPTION
.
4-CH FULL-SPEED USB UART
2
C EEPROM can be used
XR21V1414