參數(shù)資料
型號(hào): XR16L788
廠商: Exar Corporation
英文描述: HIGH PERFORMANCE OCTAL UART
中文描述: 高性能八進(jìn)制的UART
文件頁(yè)數(shù): 34/42頁(yè)
文件大小: 557K
代理商: XR16L788
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XR16L788 OCTAL UART
REV. 1.1.4
34
AC ELECTRICAL CHARACTERISTICS
TA=0
o
to
70
o
C (-40
o
to +85
o
C for industrial grade package), Vcc-3.3V and 5V +/-10% unless specified.
S
YMBOL
P
ARAMETER
3,3V
M
IN
3.3V
M
AX
5V
M
IN
5V
M
AX
U
NITS
N
OTES
T
C1,
T
C2
Clock Pulse Period
T
OSC
Oscillator Frequency
T
ECK
External Clock Frequency
10
8
ns
16
24
MHz
33
50
MHz
T
AS
T
AH
T
CS
T
DY
T
RD
T
WR
T
RDV
T
WDS
T
RDH
T
WDH
Address Setup (16 Mode)
5
5
ns
Address Hold (16 Mode)
10
10
ns
Chip Select Width (16 Mode)
50
50
ns
Delay between CS# Active Cycles (16 Mode)
50
50
ns
Read Strobe Width (16 Mode)
50
50
ns
Write Strobe Width (16 Mode)
40
30
ns
Read Data Valid (16 Mode)
35
25
ns
Write Data Setup (16 Mode)
15
10
ns
Read Data Hold (16 Mode)
15
10
ns
Write Data Hold (16 Mode)
15
10
ns
T
ADS
T
ADH
T
RWS
T
RDA
T
RDH
T
WDS
T
WDH
T
RWH
T
CSL
T
CSD
Address Setup (68 Mode)
10
5
ns
Address Hold (68 Mode)
10
10
ns
R/W# Setup to CS# (68 Mode)
10
10
ns
Read Data Access (68 mode)
35
25
ns
Read Data Hold (68 mode)
15
10
ns
Write Data Setup (68 mode)
10
10
ns
Write Data Hold (68 Mode)
10
10
ns
CS# De-asserted to R/W# De-asserted (68 Mode)
10
10
ns
CS# Width (68 Mode)
50
40
ns
CS# Cycle Delay (68 Mode)
50
40
ns
ns
ns
T
17D
T
18D
T
19D
Delay from IOW# to Modem Output
50
50
Delay to set Interrupt from Modem Input
50
35
ns
Delay to reset Interrupt from IOR#
50
35
ns
T
RST
Reset Pulse
40
40
ns
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