xr16v654 Exar Corporation, xr16v654 Datasheet - Page 5
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xr16v654
Manufacturer Part Number
xr16v654
Description
2.25v To 3.6v Quad Uart With 64-byte Fifo
Manufacturer
Exar Corporation
Datasheet
1.XR16V654.pdf
(58 pages)
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REV. 1.0.1
PIN DESCRIPTIONS
Pin Description
ORDERING INFORMATION
DATA BUS INTERFACE
(VCC)
N
IOR#
A2
A1
A0
D7
D6
D5
D4
D3
D2
D1
D0
AME
XR16V654IV80
XR16V654DIV
P
XR16V654IV
XR16V654IQ
XR16V654IL
XR16V654IJ
ART
48-QFN
P
N
15
16
17
46
45
44
43
42
41
40
39
29
IN
UMBER
#
64-LQFP
P
22
23
24
60
59
58
57
56
55
54
53
40
IN
#
68-PLCC
P
32
33
34
68
67
66
52
IN
5
4
3
2
1
#
68-Lead PLCC
64-Lead LQFP
64-Lead LQFP
100-Lead QFP
80-Lead LQFP
48-pin QFN
80-LQFP
P
P
ACKAGE
28
29
30
75
74
73
72
71
70
69
68
51
IN
#
100-QFP
5
P
IN
37
38
39
95
94
93
92
91
90
89
88
66
2.25V TO 3.6V QUAD UART WITH 64-BYTE FIFO
#
T
I/O
YPE
I
I
O
PERATING
Address data lines [2:0]. These 3 address
lines select one of the internal registers in
UART channel A-D during a data bus trans-
action.
Data bus lines [7:0] (bidirectional).
When 16/68# pin is HIGH, the Intel bus
interface is selected and this input becomes
read strobe (active low). The falling edge
instigates an internal read cycle and
retrieves the data byte from an internal reg-
ister pointed by the address lines [A2:A0],
puts the data byte on the data bus to allow
the host processor to read it on the rising
edge.
When 16/68# pin is LOW, the Motorola bus
interface is selected and this input is not
used and should be connected to VCC.
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
R
ANGE
T
EMPERATURE
D
ESCRIPTION
XR16V654/654D
D
EVICE
Active
Active
Active
Active
Active
Active
S
TATUS