xr16c2450ip Exar Corporation, xr16c2450ip Datasheet - Page 22
xr16c2450ip
Manufacturer Part Number
xr16c2450ip
Description
Dual Uart With Higher Operating Speed And Lower Access Time
Manufacturer
Exar Corporation
Datasheet
1.XR16C2450IP.pdf
(31 pages)
XR16C2450
2.97V TO 5.5V DUART
AC ELECTRICAL CHARACTERISTICS
U
S
NLESS OTHERWISE NOTED
T
T
YMBOL
T
T
OSC
T
CLK
T
T
T
T
Bclk
T
T
T
T
T
T
T
T
T
WDO
MOD
RDV
RST
WRI
WR
RSI
N
SSI
INT
AS
AH
CS
RD
DY
DD
DY
DS
DH
-
Crystal Frequency
External Clock Low/High Time
External Clock Frequency
Address Setup Time
Address Hold Time
Chip Select Width
IOR# Strobe Width
Read Cycle Delay
Data Access Time
Data Disable Time
IOW# Strobe Width
Write Cycle Delay
Data Setup Time
Data Hold Time
Delay From IOW# To Output
Delay To Set Interrupt From MODEM Input
Delay To Reset Interrupt From IOR#
Delay From Stop To Set Interrupt
Delay From Initial INT Reset To Transmit Start
Delay From IOW# To Reset Interrupt
Reset Pulse Width
Baud Rate Divisor
Baud Clock
: TA=-40
P
O
ARAMETER
TO
+85
O
C, V
CC IS
22
2.97V
TO
5.5V, 70
M
25
10
66
35
40
40
40
20
40
IN
5
0
5
8
1
P
F
L
IMITS
3.3
LOAD WHERE APPLICABLE
16X of data rate
2
M
16
16
20
35
25
50
40
40
24
45
1
AX
-1
M
IN
21
50
25
30
25
30
15
40
0
5
0
5
8
1
L
IMITS
5.0
xr
2
16
24
24
25
15
40
35
35
24
40
M
1
-1
AX
REV. 1.0.0
MHz
MHz
U
Bclk
Bclk
Hz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
NIT
-