![](http://datasheet.mmic.net.cn/Exar-Corporation/ST16C654DIQ64-F_datasheet_99781/ST16C654DIQ64-F_3.png)
xr
ST16C654/654D
REV. 5.0.2
2.97V TO 5.5V QUAD UART WITH 64-BYTE FIFO
3
FIGURE 3. PIN OUT ASSIGNMENT FOR PLCC PACKAGES IN 16 AND 68 MODE AND LQFP PACKAGES
ORDERING INFORMATION
PART NUMBER
PACKAGE
OPERATING
TEMPERATURE
RANGE
DEVICE
STATUS
PART NUMBER
PACKAGE
OPERATING
TEMPERATURE
RANGE
DEVICE
STATUS
ST16C654CJ68
68-Lead PLCC
0°C to +70°C
Active
ST16C654DCQ64
64-Lead LQFP
0°C to +70°C
Active
ST16C654IJ68
68-Lead PLCC -40°C to +85°C
Active
ST16C654DIQ64
64-Lead LQFP
-40°C to +85°C
Active
ST16C654CQ64 64-Lead LQFP
0°C to +70°C
Active
ST16C654CQ100
100-Lead QFP
0°C to +70°C
Active
ST16C654IQ64
64-Lead LQFP -40°C to +85°C
Active
ST16C654IQ100
100-Lead QFP
-40°C to +85°C
Active
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
64
63
62
61
60
59
58
57
56
55
54
53
52
51
50
49
DSRA#
CTSA#
DTRA#
VCC
RTSA#
INTA
CSA#
TXA
IOW#
TXB
CSB#
INTB
RTSB#
GND
DTRB#
CTSB#
DSRB#
CDB#
RI
B#
RXB
CLKSEL
A2
A1
A0
XTAL1
XTAL2
RESET
GND
RXC
RI
C#
CDC#
DSRC#
DSRD#
CTSD#
DTRD#
GND
RTSD#
INTD
CSD#
TXD
IOR#
TXC
CSC#
INTC
RTSC#
VCC
DTRC#
CTSC#
CDA#
RI
A#
RXA
GND
D7
D6
D5
D4
D3
D2
D1
D0
VCC
RXD
RI
D#
CDD#
ST16C654
ST16C654D
64-pin TQFP
Intel Mode Only
9
8
7
6
5
4
3
2
1
68
67
66
65
64
63
62
63
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
DSRA#
CTSA#
DTRA#
VCC
RTSA#
INTA
CSA#
TXA
IOW#
TXB
CSB#
INTB
RTSB#
GND
DTRB#
CTSB#
DSRB#
CD
B#
RI
B#
RXB
CL
K
SEL
16
/6
8#
A2
A1
A0
XTAL
1
XTAL
2
RE
SET
RXR
D
Y#
TXR
D
Y#
GN
D
RX
C
RI
C#
CD
C#
DSRD#
CTSD#
DTRD#
GND
RTSD#
INTD
CSD#
TXD
IOR#
TXC
CSC#
INTC
RTSC#
VCC
DTRC#
CTSC#
DSRC#
CD
A#
RI
A
#
RX
A
GND
D7
D6
D5
D4
D3
D2
D1
D0
INT
S
E
L
VC
C
RX
D
RI
D
#
CD
D#
ST16C654
68-pin PLCC
Intel Mode
(16/68# pin connected to VCC)
9
8
7
6
5
4
3
2
1
68
67
66
65
64
63
62
63
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
DSRA#
CTSA#
DTRA#
VCC
RTSA#
IRQ#
CS#
TXA
R/W#
TXB
A3
N.C.
RTSB#
GND
DTRB#
CTSB#
DSRB#
CD
B#
RI
B#
RXB
CL
K
SEL
16
/6
8#
A2
A1
A0
XTAL
1
XTAL
2
RE
SET
RXR
D
Y#
TXR
D
Y#
GN
D
RX
C
RI
C#
CD
C#
DSRD#
CTSD#
DTRD#
GND
RTSD#
N.C.
TXD
N.C.
TXC
A4
N.C.
RTSC#
VCC
DTRC#
CTSC#
DSRC#
CD
A#
RI
A
#
RX
A
GND
D7
D6
D5
D4
D3
D2
D1
D0
GN
D
VC
C
RX
D
RI
D
#
CD
D#
ST16C654
68-pin PLCC
Motorola Mode
(16/68# pin connected to GND)