XR16V554 Datasheet, PDF (3/45 Pages) Exar Corporation – 2.25V TO 3.6V QUAD UART WITH 16-BYTE FIFO

XR16V554/554D
REV. 1.0.1
2.25V TO 3.6V QUAD UART WITH 16-BYTE FIFO
FIGURE 3. PIN OUT ASSIGNMENT FOR 48-PIN QFN PACKAGE AND 80-PIN LQFP PACKAGE
CTSA# 1
VCC 2
RTSA# 3
INTA 4
CSA# 5
TXA 6
IOW# 7
TXB 8
CSB# 9
INTB 10
RTSB# 11
CTSB# ₁₂
XR16V554
48-pin QFN
Intel Mode
(16/68# pin connected to VCC)
36 RXD
35 CTSD#
34 GND
33 RTSD#
32 INTD
31 CSD#
30 TXD
29 IOR#
28 TXC
27 CSC#
26 INTC
25 RTSC#
CTSA# 1
VCC 2
RTSA# 3
INTA 4
CSA# 5
TXA 6
IOW# 7
TXB 8
CSB# 9
INTB 10
RTSB# 11
CTSB# ₁₂
XR16V554
48-pin QFN
Motorola Mode
(16/68# pin connected to GND)
36 RXD
35 CTSD#
34 GND
33 RTSD#
32 INTD
31 CSD#
30 TXD
29 IOR#
28 TXC
27 CSC#
26 INTC
25 RTSC#
NC
1
NC 2
DSRA# 3
CTSA# 4
DTRA# 5
VCC 6
RTSA# 7
INTA 8
CSA# 9
TXA 10
IOW# 11
TXB 12
CSB# 13
INTB 14
RTSB# 15
GND 16
DTRB# 17
CTSB# 18
DSRB# 19
NC 20
XR16V554
80-pin LQFP
Intel Mode Only
3
60 N.C.
59 DSRD#
58 CTSD#
57 DTRD#
56 GND
55 RTSD#
54 INTD
53 CSD#
52 TXD
51 IOR#
50 TXC
49 CSC#
48 INTC
47 RTSC#
46 VCC
45 DTRC#
44 CTSC#
43 DSRC#
42 N.C.
41 N.C.