REV. 2.3.1 2.97V TO 5.5V UART WITH 128-BYTE FIFO 3 PIN DESCRIPTIONS NOTE
參數(shù)資料
型號: XR16C850CJ-F
廠商: Exar Corporation
文件頁數(shù): 23/56頁
文件大?。?/td> 0K
描述: IC UART FIFO 128B 44PLCC
標準包裝: 27
特點: *
通道數(shù): 1,UART
FIFO's: 128 字節(jié)
規(guī)程: RS485
電源電壓: 2.97 V ~ 5.5 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: 44-LCC(J 形引線)
供應商設備封裝: 44-PLCC(16.59x16.59)
包裝: 管件
xr
XR16C850
REV. 2.3.1
2.97V TO 5.5V UART WITH 128-BYTE FIFO
3
PIN DESCRIPTIONS
NOTE: Pin type: I=Input, O=Output, IO= Input/output, OD=Output Open Drain.
ORDERING INFORMATION
PART NUMBER
PACKAGE
OPERATING TEMPERATURE
RANGE
DEVICE STATUS
XR16C850CJ
44-Lead PLCC
0°C to +70°C
Active
XR16C850CM
48-Lead TQFP
0°C to +70°C
Active
XR16C850IJ
44-Lead PLCC
-40°C to +85°C
Active
XR16C850IM
48-Lead TQFP
-40°C to +85°C
Active
NAME
44-PIN
PLCC
48-PIN
TQFP
TYPE
DESCRIPTION
INTEL BUS MODE INTERFACE. THE SEL PIN IS CONNECTED TO VCC.
A2
A1
A0
29
30
31
26
27
28
I
Address data lines [2:0]. A2:A0 selects internal UART’s configuration registers.
D0
D1
D2
D3
D4
D5
D6
D7
2
3
4
5
6
7
8
9
43
44
45
46
47
2
3
4
I/O
Data bus lines [7:0] (bidirectional).
IOR#
24
19
I
Input/Output Read (active low). The falling edge instigates an internal read cycle
and retrieves the data byte from an internal register pointed by the address lines
[A2:A0], places it on the data bus to allow the host processor to read it on the lead-
ing edge. Either an active IOR# or IOR is required to transfer data from 850 to CPU
during a read operation. If not used, connect this pin to VCC. Caution: SEE”FAC-
IOR
25
20
I
Input/Output Read (active high). Same as IOR# but active high. Either an active
IOR# or IOR is required to transfer data from 850 to CPU during a read operation.
If not used, connect this pin to GND. During PC Mode, this pin becomes A3. Cau-
IOW#
20
16
I
Input/Output Write (active low). The falling edge instigates the internal write cycle
and the rising edge transfers the data byte on the data bus to an internal register
pointed by the address lines [A2:A0]. Either an active IOW# or IOW is required to
transfer data from 850 to the Intel type CPU during a write operation. If not used,
connect this pin to VCC. Caution: SEE”FACTORY TEST MODE” ON PAGE 7.
IOW
21
17
I
Input/Output Write (active high). The rising edge instigates the internal write cycle
and the falling edge transfers the data byte on the data bus to an internal register
pointed by the address lines [A2:A0]. Either an active IOW# or IOW is required to
transfer data from 850 to the Intel type CPU during a write operation. During PC
Mode, this pin becomes A8. If not used, connect this pin to GND. Caution:
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