XR16L570 Datasheet, PDF (35/46 Pages) Exar Corporation – SMALLEST 1.62V TO 5.5V UART WITH 16-BYTE FIFO AND POWERSAVE

xr
REV. 1.0.0
XR16L570
SMALLEST 1.62V TO 5.5V UART WITH 16-BYTE FIFO AND POWERSAVE
AC ELECTRICAL CHARACTERISTICS
UNLESS OTHERWISE NOTED: TA= -40^O TO +85^OC, VCC=2.97 - 5.5V, 70 PF LOAD WHERE APPLICABLE
SYMBOL
PARAMETER
-
OSC
CLK
T_AS
T_AH
T_CS
T_RD
T_DY
T_RDV
T_DD
T_WR
T_DY
T_DS
T_DH
T_WDO
T_MOD
T_RSI
T_SSI
T_RRI
T_SI
T_INT
T_WRI
T_RST
N
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
Bclk Baud Clock
LIMITS
3.3
MIN
MAX
LIMITS
5.0
MIN
MAX
UNIT
20
24 MHz
33
50 MHz
15
10
ns
5
10
ns
0
0
ns
50
30
ns
50
30
ns
50
30
ns
50
25 ns
0
20
0
20 ns
50
30
ns
50
30
ns
15
12
ns
3
5
ns
75
50 ns
75
50 ns
75
50 ns
1
1 Bclk
75
50 ns
75
50 ns
8
24
8
24 Bclk
75
50 ns
40
40
ns
1
2¹⁶-1
1
2¹⁶-1 ^-
16X of data rate
Hz
NOTE: * For faster data rates, see the data rate characterization data on page 37.
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