xr16c2450ip Exar Corporation, xr16c2450ip Datasheet - Page 22

• Manufacturer Part Number: xr16c2450ip
• Description: Dual Uart With Higher Operating Speed And Lower Access Time
• Manufacturer: Exar Corporation

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
-