XR16C850 Datasheet, PDF (2/55 Pages) Exar Corporation – UART with 128-byte FIFO’s FIFO Counters and Half-duplex Control

XR16C850
D11 1
D5 2
D6 3
D7 4
S2 / RCLK 5
A4 6
RX 7
TX 8
A5 / CS0 9
A6 / CS1 10
A7 / -CS2 11
-LPT1 / -BAUDOUT 12
XR16C850CM
D11 1
D5 2
D6 3
D7 4
S2 / RCLK 5
A4 6
RX 7
TX 8
A5 / CS0 9
A6 / CS1 10
A7 / -CS2 11
-LPT1 / -BAUDOUT 12
TC 13
XR16C850CQ
36 SEL
35 RESET
34 -OP1/RS485
33 -DTR
32 -RTS
31 -OP2 / S3
30 INT / IRQA
29 -RXRDY / IRQB
28 A0
27 A1
26 A2
25 BUS 8/16
D0 1
D1 2
D2 3
D3 4
D4 5
D5 6
D6 7
D7 8
RCLK 9
RX 10
TX 11
CS0 12
CS1 13
-CS2 14
-BAUDOUT 15
39 SEL
38 RESET
37 -OP1/RS485
36 -DTR
XTAL1 16
XTAL2 17
-IOW 18
IOW 19
35 -RTS
GND 20
34 -OP2 / S3
33 INT / IRQA
32 -RXRDY*/ IRQB/DRQ
31 A0
30 A1
29 A2
28 BUS 8/16
27 CLK 8/16
40 VCC
39 -RI
38 -CD
37 -DSR
36 -CTS
35 RESET
34 -OP1
33 -DTR
32 -RTS
31 -OP2
30 INT
29 -RXRDY
28 A0
27 A1
26 A2
25 -AS
24 -TXRDY
23 -DDIS
22 IOR
21 -IOR
Rev. 1.20
Figure 1. PACKAGE DESCRIPTION, 16C850
2