XR16L2750 Datasheet, PDF (38/49 Pages) Exar Corporation – 2.25V TO 5.5V DUART WITH 64-BYTE FIFO

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XR16L2750
2.25V TO 5.5V DUART WITH 64-BYTE FIFO
REV. 1.0.0
AC ELECTRICAL CHARACTERISTICS
TA=0^O TO 70^OC (-40^O TO +85^OC FOR INDUSTRIAL GRADE PACKAGE), VCC IS 2.25 TO 5.5V
SYMBOL
PARAMETER
LIMITS
2.5
MIN
MAX
LIMITS
3.3
MIN
MAX
LIMITS
5.0
MIN
MAX
UNIT
CONDITIONS
CLK Clock Pulse Duration
50
50
17
ns
OSC Oscillator Frequency
16
20
24 MHz
OSC External Clock Frequency
24
33
50 MHz
T_AS Address Setup Time
15
10
5
ns
T_AH Address Hold Time
15
10
5
ns
T_CS Chip Select Width
66
66
50
ns
T_RD IOR# Strobe Width
50
35
25
ns
T_DY Read Cycle Delay
50
40
30
ns
T_RDV Data Access Time
50
50
35
ns
T_DD Data Disable Time
0
35
0
35
0
35
ns
T_WR IOW# Strobe Width
40
40
25
ns
T_DY Write Cycle Delay
50
40
30
ns
T_DS Data Setup Time
15
10
5
ns
T_DH Data Hold Time
15
10
5
ns
T_WDO Delay From IOW# To Output
50
50
40
ns 100 pF load
T_MOD Delay To Set Interrupt From
50
40
35
ns 100 pF load
MODEM Input
T_RSI Delay To Reset Interrupt
From IOR#
50
40
35
ns 100 pF load
T_SSI Delay From Stop To Set Inter-
1
1
1
Bclk
rupt
T_RRI
Delay From IOR# To Reset
Interrupt
50
45
40
ns 100 pF load
T_SI Delay From Stop To Interrupt
50
45
40
ns
T_INT Delay From Initial INT Reset
8
24
8
24
8
24 Bclk
To Transmit Start
T_WRI Delay From IOW# To Reset
50
45
40
ns
Interrupt
T_SSR Delay From Stop To Set
RXRDY#
1
1
1
Bclk
38