xr16m654 Exar Corporation, xr16m654 Datasheet - Page 5

• Manufacturer Part Number: xr16m654
• Description: 1.62v To 3.63v Quad Uart With 64-byte Fifo
• Manufacturer: Exar Corporation

REV. 1.0.0
PIN DESCRIPTIONS
Pin Description
ORDERING INFORMATION
DATA BUS INTERFACE
(VCC)
N
IOR#
A2
A1
A0
D7
D6
D5
D4
D3
D2
D1
D0
AME
XR16M654DIV64
XR16M654IQ100
XR16M654IV64
XR16M654IV80
XR16M654IJ68
XR16M654IL48
P
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
1.62V TO 3.63V QUAD UART WITH 64-BYTE FIFO
IN
37
38
39
95
94
93
92
91
90
89
88
66
#
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
XR16M654/654D
D
EVICE
Active
Active
Active
Active
Active
Active
S
TATUS