參數(shù)資料
型號: XRT16C854
廠商: Exar Corporation
英文描述: 2.97V TO 5.5V QUAD UART WITH 128-BYTE FIFO
中文描述: 2.97V至5.5V四路UART的128字節(jié)FIFO
文件頁數(shù): 42/54頁
文件大小: 485K
代理商: XRT16C854
XR16C854/854D
2.97V TO 5.5V QUAD UART WITH 128-BYTE FIFO
xr
REV. 3.0.1
42
AC ELECTRICAL CHARACTERISTICS
TA=0
O
TO
70
O
C (-40
O
TO
+85
O
C
FOR
INDUSTRIAL
GRADE
PACKAGE
), V
CC
IS
2.97
TO
5.5V
S
YMBOL
P
ARAMETER
L
IMITS
3.3
M
IN
M
AX
L
IMITS
5.0
M
IN
M
AX
U
NIT
C
ONDITIONS
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)
10
5
ns
TAH
Address Hold Time (16 Mode)
10
5
ns
TCS
Chip Select Width (16 Mode)
66
50
ns
TRD
IOR# Strobe Width (16 Mode)
35
25
ns
TDY
Read Cycle Delay (16 Mode)
40
30
ns
TRDV
Data Access Time (16 Mode)
35
25
ns
TDD
Data Disable Time (16 Mode)
0
25
0
15
ns
TWR
IOW# Strobe Width (16 Mode)
35
25
ns
TDY
Write Cycle Delay (16 Mode)
40
30
ns
TDS
Data Setup Time (16 Mode)
10
5
ns
TDH
Data Hold Time (16 Mode)
10
5
ns
T
ADS
Address Setup (68 Mode)
10
10
ns
T
ADH
Address Hold (68 Mode)
15
15
ns
TRWS
R/W# Setup to CS# (68 Mode)
10
5
ns
T
RDA
Read Data Access (68 mode)
15
15
ns
TRDH
Read Data Hold (68 mode)
15
15
ns
T
WDS
Write Data Setup (68 mode)
20
15
ns
T
WDH
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)
40
40
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
TSSI
Delay From Stop To Set Interrupt
1
1
Bclk
TRRI
Delay From IOR# To Reset Interrupt
40
40
ns
100 pF load
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