REV. 1.1.1 2.25V TO 5.5V DUART 5 Pin type: I=Input, O=Output, IO= Input/output, OD=Output Open Drain. OP2B# 15 9 O Output Port 2 C" />
參數(shù)資料
型號: XR16L2450IM-F
廠商: Exar Corporation
文件頁數(shù): 26/30頁
文件大小: 0K
描述: IC UART FIFO 1B DUAL 48TQFP
標準包裝: 250
特點: *
通道數(shù): 2,DUART
FIFO's: 1 字節(jié)
規(guī)程: RS232
電源電壓: 2.25 V ~ 5.5 V
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: 48-TQFP
供應商設備封裝: 48-TQFP(7x7)
包裝: 托盤
xr
XR16L2450
REV. 1.1.1
2.25V TO 5.5V DUART
5
Pin type: I=Input, O=Output, IO= Input/output, OD=Output Open Drain.
OP2B#
15
9
O
Output Port 2 Channel B - The output state is defined by the user and
through the software setting of MCR[3]. INTB is set to the active mode
and OP2B# output to a logic 0 when MCR[3] is set to a logic 1. INTB is
set to the three state mode and OP2B# to a logic 1 when MCR[3] is set
to a logic 0. This output should not be used as a general output else it
will disturb the INTB output functionality. If it is not used, leave it uncon-
nected.
ANCILLARY SIGNALS
XTAL1
18
13
I
Crystal or external clock input.
XTAL2
19
14
O
Crystal or buffered clock output.
RESET
39
36
I
Reset (active high) - A longer than 40 ns logic 1 pulse on this pin will
reset the internal registers and all outputs. The UART transmitter output
will be held at logic 1, the receiver input will be ignored and outputs are
reset during reset period.
VCC
44
42
Pwr
2.25V to 5.5V power supply. All inputs are 5V tolerant.
GND
22
17
Pwr
Power supply common, ground.
N.C.
1, 12, 23,
34
6, 12, 18,
24, 25, 31,
37, 43
-
No Connection. These pins are not connected internally.
PIN DESCRIPTIONS
NAME
44-PLCC
PIN #
48-TQFP
PIN #
TYPE
DESCRIPTION
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