XR21V1410 Datasheet, PDF (4/23 Pages) Exar Corporation – 1-CH FULL-SPEED USB UART

XR21V1410
1-CH FULL-SPEED USB UART
Pin Description
NAME
SCL
16-QFN
PIN #
12
Ancillary Signals
LOWPOWER
2
VCC
GND
16
1, 13
TYPE
I
O
Pwr
Pwr
REV. 1.0.0
DESCRIPTION
I²C-controller serial input clock. 1K pull-up resistor is required. An
optional external I²C EEPROM can be used to store default configura-
tions 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 Table 1
Low power status output. This pin is HIGH when the XR21V1410 is in
the suspend mode. This pin is LOW when the XR21V1410 is not in the
suspend 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 during suspend mode.
+3.3V power supply. All inputs are 5V tolerant.
Power supply common, ground.
NOTE: Pin type: I=Input, O=Output, I/O= Input/output, OD=Output Open Drain.
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