參數資料
型號: XR20M1170IL16TR-F
廠商: Exar Corporation
文件頁數: 1/56頁
文件大?。?/td> 0K
描述: IC UART FIFO I2C/SPI 64B 16QFN
標準包裝: 3,000
特點: *
通道數: 1,UART
FIFO's: 64 字節(jié)
規(guī)程: RS485
電源電壓: 2.25 V ~ 3.6 V
帶自動流量控制功能:
帶IrDA 編碼器/解碼器:
帶故障啟動位檢測功能:
帶調制解調器控制功能:
帶CMOS:
安裝類型: 表面貼裝
封裝/外殼: 16-VQFN 裸露焊盤
供應商設備封裝: 16-QFN-EP(4x4)
包裝: 帶卷 (TR)
Exar Corporation 48720 Kato Road, Fremont CA, 94538 (510) 668-7000 FAX (510) 668-7017 www.exar.com
XR20M1170
I2C/SPI UART WITH 64-BYTE FIFO
JULY 2012
REV. 1.1.0
GENERAL DESCRIPTION
The XR20M11701 (M1170) is a high performance
universal asynchronous receiver and transmitter
(UART) with 64 byte TX and RX FIFOs and a
selectable I2C/SPI slave interface. The M1170
operates from 1.62 to 3.63 volts. The enhanced
features in the M1170 include a programmable
fractional baud rate generator, an 8X and 4X
sampling rate that allows for a maximum baud rate of
16 Mbps at 3.3V. The standard features include 16
selectable TX and RX FIFO trigger levels, automatic
hardware (RTS/CTS) and software (Xon/Xoff) flow
control, and a complete modem interface. Onboard
registers provide the user with operational status and
data error flags. An internal loopback capability
allows system diagnostics. The M1170 is available in
the 24-pin QFN, 16-pin QFN, 24-pin TSSOP and 16-
pin TSSOP packages.
NOTE: 1 Covered by U.S. Patent #5,649,122
APPLICATIONS
Portable Appliances
Battery-Operated Devices
Cellular Data Devices
Factory Automation and Process Controls
FEATURES
1.62 to 3.6 Volt Operation
Selectable I2C/SPI Interface
SPI clock frequency up to
18 MHz at 3.3 V
16 MHz at 2.5 V
8 MHz at 1.8 V
Full-featured UART
Data rate of up to 16 Mbps at 3.3 V
Data rate of up to 12.5 Mbps at 2.5 V
Data rate of up to 8 Mbps at 1.8 V
Fractional Baud Rate Generator
Transmit and Receive FIFOs of 64 bytes
16 Selectable TX and RX FIFO Trigger Levels
Automatic Hardware (RTS/CTS) Flow Control
Automatic Software (Xon/Xoff) Flow Control
Halt and Resume Transmission Control
Automatic
RS-485
Half-duplex
Direction
Control Output via RTS#
Wireless Infrared (IrDA 1.0 and 1.1) Encoder/
Decoder
Automatic sleep mode (< 15 uA at 3.3V)
General Purpose I/Os
Full modem interface
Crystal oscillator (up to 24MHz) or external clock
(up to 64MHz) input
24-QFN,
16-QFN,
24-TSSOP,
16-TSSOP
packages
FIGURE 1. XR20M1170 BLOCK DIAGRAM
I2C/SPI
Interface
I2C/SPI#
SO
A1/SI
A0/CS#
SCL
SDA
IRQ#
Crystal Osc/Buffer
BRG
UART
Regs
XTAL2
XTAL1
64 Byte
TX FIFO
GPIOs
TX
RX
CTS#
RTS#
GPIO[7:0]
1.62V – 3.63V
VCC
64 Byte
RX FIFO
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