xr16c854iv Exar Corporation, xr16c854iv Datasheet - Page 42
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xr16c854iv
Manufacturer Part Number
xr16c854iv
Description
Quad Uart With Rx/tx Fifo Counters And 128-byte Fifo
Manufacturer
Exar Corporation
Datasheet
1.XR16C854IV.pdf
(54 pages)
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XR16C854/854D
2.97V TO 5.5V QUAD UART WITH 128-BYTE FIFO
AC ELECTRICAL CHARACTERISTICS
TA=0
S
TWDO
TRWS
TRWH
TMOD
TRDH
TRDV
TCSD
T
T
TCSL
TRRI
YMBOL
TWR
T
T
T
TRSI
TSSI
OSC
OSC
CLK
TCS
TRD
TDY
TDD
TDY
TDS
TDH
TAS
TAH
WDH
ADH
WDS
ADS
RDA
O
TO
70
Clock Pulse Duration
Oscillator Frequency
External Clock Frequency
Address Setup Time (16 Mode)
Address Hold Time (16 Mode)
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 Setup (68 Mode)
Address Hold (68 Mode)
R/W# Setup to CS# (68 Mode)
Read Data Access (68 mode)
Read Data Hold (68 mode)
Write Data Setup (68 mode)
Write Data Hold (68 Mode)
CS# De-asserted to R/W# De-asserted (68 Mode)
CS# Strobe Width (68 Mode)
CS# Cycle Delay (68 Mode)
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
O
C (-40
O
TO
+85
P
O
ARAMETER
C
FOR INDUSTRIAL GRADE PACKAGE
42
M
20
10
10
66
35
40
35
40
10
10
10
15
10
15
15
20
10
10
40
70
IN
0
L
IMITS
3.3
), V
CC IS
M
24
35
25
50
40
40
40
8
1
AX
2.97
M
IN
15
50
25
30
25
30
10
15
15
15
15
10
10
40
70
5
5
0
5
5
5
TO
L
IMITS
5.0
5.5V
24
32
25
15
40
35
35
40
M
1
AX
U
MHz
MHz
Bclk
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
NIT
xr
100 pF load
100 pF load
100 pF load
100 pF load
C
ONDITIONS
REV. 3.0.1