XR16L570_07 Datasheet, PDF (37/47 Pages) Exar Corporation – SMALLEST 1.62V TO 5.5V UART WITH 16-BYTE FIFO AND POWERSAVE

XR16L570
REV. 1.0.1
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=1.62 - 2.75V, 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
1.8
MIN
MAX
LIMITS
2.5
MIN
MAX
UNIT
12
18 MHz
12
24 MHz
40
20
ns
5
5
ns
0
0
ns
250
100
ns
250
100
ns
250
100
ns
175
75 ns
0
30
0
30 ns
250
100
ns
250
100
ns
75
25
ns
3
3
ns
200
150 ns
200
150 ns
200
150 ns
1
1 Bclk
200
150 ns
200
150 ns
8
24
8
24 Bclk
200
150 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 38.
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