XR16L651 Datasheet, PDF (42/56 Pages) Exar Corporation – 2.25V TO 5.5V UART WITH 32-BYTE FIFO

XR16L651
2.25V TO 5.5V UART WITH 32-BYTE FIFO
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REV. 1.3.0
AC ELECTRICAL CHARACTERISTICS
TA=0^O TO 70^OC (-40^O TO +85^OC FOR INDUSTRIAL GRADE PACKAGE), VCC IS 2.90V TO 5.5V, 70 PF LOAD
WHERE APPLICABLE
SYMBOL
PARAMETER
LIMITS
2.5
MIN
MAX
LIMITS
3.3
MIN
MAX
LIMITS
5.0
MIN
MAX
UNIT
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 (16 Mode)
15
10
5
ns
T_AH Address Hold Time (16 Mode)
20
10
10
ns
(top mark date code of "BC YYWW" and older)
T_AH Address Hold Time (16 Mode)
0
0
0
ns
(top mark date code of "C2 YYWW" and newer)
T_CS
T_RD
T_DY
T_RDV
T_DD
T_WR
T_DY
T_DS1
T_DH1
T_ASW
T_AS1
T_AH1
T_AS2
T_AH2
T_CS1
T_CSH
T_CS2
T_RD1
T_RD2
T_DIS
Chip Select Width (16 Mode)
IOR# Strobe Width (16 Mode)
Read Cycle Delay (16 Mode)
Data Access Time (16 Mode)
Data Disable Time (16 Mode)
IOW# Strobe Width (16 Mode)
Write Cycle Delay (16 Mode)
Data Setup Time (16 Mode)
Data Hold Time (16 Mode)
Address Strobe Width (16 Mode, AS# used)
Address Setup Time (16 Mode, AS# used)
Address Hold Time (16 Mode, AS# used)
Address Setup Time (16 Mode, AS# used)
Address Hold Time (16 Mode, AS# used)
Delay from Chip Select to AS#
Delay from AS# to Chip Select
Delay from AS# to Chip Select
Delay from AS# to Read
Delay from Chip Select to IOR#
Delay from IOR# to DDIS#
50
50
40
ns
50
50
40
ns
50
50
40
ns
50
40
30 ns
0
25
0
15
0
10 ns
50
50
40
ns
50
50
40
ns
20
20
10
ns
15
15
10
ns
50
35
25
ns
5
5
5
ns
10
10
10
ns
5
5
5
ns
10
10
10
ns
5
5
5
ns
0
0
0
ns
5
5
5
ns
10
10
10
ns
10
10
10
ns
20
15
10
ns
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