XR21B1411IL-0A-EB Datasheet, PDF (2/30 Pages) Exar Corporation – ENHANCED 1-CH FULL-SPEED USB UART

XR21B1411
ENHANCED 1-CH FULL-SPEED USB UART
FIGURE 1. XR21B1411 BLOCK DIAGRAM
USBD+
USBD-
5V VCC
GND
Internal
Programmable
Oscillator
(6MHz – 48MHz)
USB Slave Interface
USB
Descriptors
OTP
Fractional
BRG
Internal
Status and
Control
Registers
128-byte
TX FIFO
384-byte
RX FIFO
GPIOs/
Modem IO
UART
FIGURE 2. PIN OUT DIAGRAM
REV. 1.2.0
1.6V-3.6V VIO_REF
TX
RX
GPIO5/RTS#/RS485
GPIO4/CTS#
GPIO3/DTR#
GPIO2/DSR#
GPIO1/CD#
GPIO0/RI#
16 15 14 13
LOWPOWER 1
12 VIO_REF
NC 2
GPIO5/RTS#/RS485 3
16-Pin 11 VBUS_SENSE
QFN _{10 RX}
GPIO4/CTS# 4
9 TX
5678
ORDERING INFORMATION
PART NUMBER
XR21B1411IL16-F
XR21B1411IL16TR-F
XR21B1411IL16MTR-F
PACKAGE
16-pin QFN
16-pin QFN
16-pin QFN
OPERATING TEMPERATURE RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
NOTE: TR = Tape and Reel, MTR = Mini Tape and Reel, F = Green / RoHS
2
DEVICE STATUS
Active
Active
Active