REV. 1.1.0 I2C/SPI UART WITH 64-BYTE FIFO PIN DESCRIPTIONS Pin Description NAME 24-Q" />
參數(shù)資料
型號: XR20M1170IL24TR-F
廠商: Exar Corporation
文件頁數(shù): 23/56頁
文件大?。?/td> 0K
描述: IC UART FIFO I2C/SPI 64B 24QFN
標準包裝: 3,000
特點: *
通道數(shù): 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: 24-VFQFN 裸露焊盤
供應商設備封裝: 24-QFN 裸露焊盤(4x4)
包裝: 帶卷 (TR)
XR20M1170
3
REV. 1.1.0
I2C/SPI UART WITH 64-BYTE FIFO
PIN DESCRIPTIONS
Pin Description
NAME
24-QFN
PIN #
16-QFN
PIN #
24-TSSOP
PIN#
16-TSSOP
PIN #
TYPE
DESCRIPTION
I2C (SPI) INTERFACE
GPIO0
2
-
5
-
I/O
General purpose I/O pin.
GPIO1
3
-
6
-
I/O
General purpose I/O pin.
I2C/SPI#
4
2
7
4
I/O
I2C-bus or SPI interface select. I2C-bus interface
is selected if this pin is HIGH. SPI interface is
selected if this pin is LOW
RX
5
3
8
5
I
UART Receive Data or Infrared Receive Data.
UART receive data input must idle HIGH. Infrared
receive data input must idle LOW. If this pin is not
used, tie it to VCC or pull it high via a 100k ohm
resistor.
TX
6
4
9
6
O
UART Transmit Data or Infrared Encoder Data. In
the standard UART Transmit Data mode, the TX
signal will be HIGH during reset or idle (no data). In
the Infrared mode, the inactive state (no data) for
the Infrared encoder/decoder interface is LOW. If
ithis pin is not used, it should be left unconnected.
GPIO2
7
-
10
-
I/O
General purpose I/O pin.
XTAL1
8
5
11
7
I
Crystal or external clock input.
XTAL2
9
6
12
8
O
Crystal or buffered clock output.
GPIO3
10
-
13
-
I/O
General purpose I/O pin.
GND
11
7
14
9
Pwr Power supply common, ground.
SDA
12
8
15
10
O
I2C-bus data input/output (open-drain). If SPI con-
figuration is selected, then this pin is undefined and
must be connected to VCC.
SCL
13
9
16
11
I
I2C-bus or SPI serial input clock.
When the I2C-bus interface is selected, the serial
clock idles HIGH. When the SPI interface is
selected, the serial clock idles LOW.
IRQ#
14
10
17
12
OD
Interrupt output (open-drain, active LOW).
RTS#
15
11
18
13
O
UART Request-To-Send. This output can be used
for Auto RTS Hardware Flow Control, Auto RS-485
Half-Duplex direction control or as a general pur-
pose output.
GPIO5
DTR#
16
-
19
-
I/O
General purpose I/O pin or DTR# output.
GPIO4
DSR#
17
-
20
-
I/O
General purpose I/O pin or DSR# input.
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