XR16C864 View Datasheet(PDF) - Exar Corporation
Part Name
Description
MFG CO.
'XR16C864' PDF : 51 Pages View PDF
REV. 2.2.0
XR16C864
2.97V TO 5.5V QUAD UART WITH 128-BYTE FIFO
AC ELECTRICAL CHARACTERISTICS
TA=0O TO 70OC (-40O TO +85OC FOR INDUSTRIAL GRADE PACKAGE), VCC IS 2.97 TO 5.5V
SYMBOL
PARAMETER
LIMITS
3.3
MIN
MAX
LIMITS
5.0
MIN
MAX
UNIT
CONDITIONS
CLK Clock Pulse Duration
20
15
ns
OSC Oscillator Frequency
8
24 MHz
OSC External Clock Frequency
24
32 MHz
TAS Address Setup Time (16 Mode)
TAH Address Hold Time (16 Mode)
TCS Chip Select Width (16 Mode)
TRD IOR# Strobe Width (16 Mode)
10
5
ns
10
5
ns
70
50
ns
70
50
ns
TDY Read Cycle Delay (16 Mode)
70
50
ns
TRDV Data Access Time (16 Mode)
70
50 ns
TDD Data Disable Time (16 Mode)
0
25
0
15 ns
TWR IOW# Strobe Width (16 Mode)
70
50
ns
TDY Write Cycle Delay (16 Mode)
70
50
ns
TDS Data Setup Time (16 Mode)
10
5
ns
TDH Data Hold Time (16 Mode)
10
5
ns
TADS Address Setup (68 Mode)
10
10
ns
TADH Address Hold (68 Mode)
15
15
ns
TRWS R/W# Setup to CS# (68 Mode)
10
5
ns
TRDA Read Data Access (68 mode)
70
50 ns
TRDH Read Data Hold (68 mode)
15
15
ns
TWDS Write Data Setup (68 mode)
20
15
ns
TWDH Write Data Hold (68 Mode)
10
10
ns
TRWH CS# De-asserted to R/W# De-asserted (68 Mode) 10
10
ns
TCSL CS# Strobe Width (68 Mode)
70
50
ns
TCSD CS# Cycle Delay (68 Mode)
70
70
ns
TWDO Delay From IOW# To Output
50
40 ns 100 pF load
TMOD Delay To Set Interrupt From MODEM Input
40
35 ns 100 pF load
TRSI Delay To Reset Interrupt From IOR#
40
35 ns 100 pF load
43
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