xr16c2552ij Exar Corporation, xr16c2552ij Datasheet - Page 27

• Manufacturer Part Number: xr16c2552ij
• Description: 2.97v To 5.5v Dual Uart With 16-byte Fifo
• Manufacturer: Exar Corporation

xr
REV. 1.0.0
AC ELECTRICAL CHARACTERISTICS
TA=-40
S
T
T
YMBOL
T
T
T
T
OSC
T
CLK
T
T
T
T
T
Bclk
T
T
T
T
T
T
T
T
T
T
T
T
WDO
MOD
RDV
SSR
SRT
RST
WRI
WR
RSI
SSI
RRI
INT
N
AH
RD
DD
DH
RR
WT
AS
CS
DY
DY
DS
-
SI
O
TO
Crystal Frequency
Clock Pulse Duration
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 IOR# To Reset Interrupt
Delay From Start To Interrupt
Delay From Initial INT Reset To Transmit Start
Delay From IOW# To Reset Interrupt
Delay From Stop To Set RXRDY#
Delay From IOR# To Reset RXRDY#
Delay From IOW# To Set TXRDY#
Delay From Center of Start To Reset TXRDY#
Reset Pulse Width
Baud Rate Divisor
Baud Clock
+85
O
C, V
CC IS
2.97
TO
P
5.5V, 70
ARAMETER
P
F
LOAD WHERE APPLICABLE
27
2.97V TO 5.5V DUAL UART WITH 16-BYTE FIFO
M
17
10
66
35
40
40
40
20
40
IN
5
0
5
8
1
L
IMITS
3.3
16X of data rate
2
M
16
20
30
35
25
50
40
40
45
45
24
45
45
45
1
1
8
AX
-1
M
IN
50
25
30
25
30
15
40
8
0
5
0
5
8
1
L
IMITS
5.0
2
16
24
64
25
15
40
35
35
40
40
24
40
40
40
XR16C2552
M
1
1
8
-1
AX
U
MHz
MHz
Bclk
Bclk
Bclk
Bclk
Hz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
NIT
-