XR16L570 Exar Corporation, XR16L570 Datasheet - Page 36

• Manufacturer Part Number: XR16L570
• Description: SMALLEST 1.62V TO 5.5V UART
• Manufacturer: Exar Corporation

XR16L570
SMALLEST 1.62V TO 5.5V UART WITH 16-BYTE FIFO AND POWERSAVE
AC ELECTRICAL CHARACTERISTICS
U
N
S
OTE
NLESS OTHERWISE NOTED
T
T
YMBOL
T
T
OSC
T
CLK
T
T
T
T
T
Bclk
T
T
T
T
T
T
T
T
T
WDO
T
MOD
RDV
RST
WRI
WR
RSI
RRI
N
SSI
INT
AS
AH
CS
RD
DY
DD
DY
DS
DH
-
: * For faster data rates, see the data rate characterization data on
SI
Crystal Oscillator Frequency
External Clock Frequency*
External Clock Low/High Time*
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 Stop To 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
=1.62 - 2.75V, 70
36
page 37
P
F
M
LOAD WHERE APPLICABLE
250
250
250
250
250
.
40
75
40
IN
5
0
0
3
8
1
L
IMITS
1.8
16X of data rate
2
175
200
200
200
200
200
200
M
16
12
12
30
24
1
AX
-1
M
100
100
100
100
100
IN
20
25
40
5
0
0
3
8
1
xr
L
IMITS
2.5
2
150
150
150
150
150
150
16
18
24
75
30
24
M
1
REV. 1.0.0
-1
AX
MHz
MHz
U
Bclk
Bclk
Hz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
NIT
-