XR16L651 Datasheet, PDF (2/56 Pages) Exar Corporation – 2.25V TO 5.5V UART WITH 32-BYTE FIFO

XR16L651
2.25V TO 5.5V UART WITH 32-BYTE FIFO
FIGURE 2. INTEL, MOTOROLA AND PC MODE PIN OUT
áç
REV. 1.3.0
GND
A9
CTS#
DSR#
CD#
RI#
VCC
D0
D1
D2
D3
D4
36 35 34 33 32 31 30 29 28 27 26 25
XR16L651
48-TQFP
in Intel Bus Mode
1 2 3 4 5 6 7 8 9 10 11 12
AS#
TXRDY#
DDIS#
S1
IOR
IOR#
GND
IOW
IOW#
XTAL2
XTAL1
ENIR
VCC
A9
CTS#
DSR#
CD#
RI#
VCC
D0
D1
D2
D3
D4
36 35 34 33 32 31 30 29 28 27 26 25
XR16L651
48-TQFP in
Motorola Bus Mode
1 2 3 4 5 6 7 8 9 10 11 12
AS#
TXRDY#
DDIS#
S1
GND
GND
GND
GND
R/W#
XTAL2
XTAL1
ENIR
Intel Bus Mode with
IM# tied to GND and
PCMODE# tied to VCC
Motorola Bus Mode with
IM# tied to VCC and
PCMODE# tied to VCC
GND
A9
CTS#
DSR#
CD#
RI#
VCC
D0
D1
D2
D3
D4
36 35 34 33 32 31 30 29 28 27 26 25
XR16L651
48-TQFP
in PC Mode
1 2 3 4 5 6 7 8 9 10 11 12
AEN#
IRQC
LPT2#
S1
A3
IOR#
GND
A8
IOW#
XTAL2
XTAL1
ENIR
PC Mode with IM# and
PCMODE# tied to GND
IM#
: PIN 37
PCMODE# : PIN 36
ORDERING INFORMATION
PART NUMBER
PACKAGE
XR16L651CM
48-Lead TQFP
XR16L651IM
48-Lead TQFP
OPERATING TEMPERATURE RANGE
0°C to +70°C
-40°C to +85°C
DEVICE STATUS
Active
Active
2