XR16C850CM-F Datasheet, PDF (2/56 Pages) Exar Corporation – 2.97V TO 5.5V UART WITH 128-BYTE FIFO

XR16C850
2.97V TO 5.5V UART WITH 128-BYTE FIFO
FIGURE 2. PINOUTS IN INTEL BUS MODE AND PC MODE, TQFP AND PLCC PACKAGES
48-TQFP PACKAGE
xr
REV. 2.3.1
N.C. 1
D5 2
D6 3
D7 4
RCLK 5
N.C. 6
RX 7
TX 8
CS0 9
CS1 10
-CS2 11
-BAUDOUT 12
XR16C850CM
Intel Bus Mode (SEL = VCC)
8-Bit Bus Mode
36 SEL
35 RESET
34 OP1#/RS485
33 DTR#
32 RTS#
31 OP2#
30 INT
29 RXRDY#
28 A0
27 A1
26 A2
25 BUS 8/16
D11 1
D5 2
D6 3
D7 4
RCLK 5
N.C. 6
RX 7
TX 8
CS0 9
CS1 10
-CS2 11
-BAUDOUT 12
XR16C850CM
Intel Bus Mode (SEL = VCC)
16-Bit Bus Mode
36 SEL
35 RESET
34 OP1#/RS485
33 DTR#
32 RTS#
31 OP2#
30 INT
29 RXRDY#
28 A0
27 A1
26 A2
25 BUS 8/16
N.C. 1
D5 2
D6 3
D7 4
S2 5
A4 6
RX 7
TX 8
A5 9
A6 10
A7 11
LPT1# 12
XR16C850CM
PC Mode (SEL = GND)
8-Bit Bus Mode Only
36 SEL
35 RESET
34 OP1#/RS485
33 DTR#
32 RTS#
31 S3
30 IRQA
29 IRQB
28 A0
27 A1
26 A2
25 BUS 8/16
44-PLCC PACKAGE
D5 7
D6 8
D7 9
RCLK 10
RX 11
N.C. 12
TX 13
CS0 14
CS1 15
CS2# 16
BAUDOUT# 17
XR16C850CJ
Intel Bus Mode (SEL = VCC)
8-Bit Bus Mode Only
39 RESET
38 OP1#/RS485
37 DTR#
36 RTS#
35 OP2#
34 SEL
33 INT
32 RXRDY#
31 A0
30 A1
29 A2
D5 7
D6 8
D7 9
S2 10
RX 11
A4 12
TX 13
A5 14
A6 15
A7 16
LPT1# 17
XR16C850CJ
PC Mode (SEL = GND)
8-Bit Bus Mode Only
39 RESET
38 OP1#/RS485
37 DTR#
36 RTS#
35 S3
34 SEL
33 IRQA
32 IRQB
31 A0
30 A1
29 A2
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