XR16L784 Exar Corporation, XR16L784 Datasheet - Page 34

• Manufacturer Part Number: XR16L784
• Description: High Performance 5V And 3.3V Quad Uart
• Manufacturer: Exar Corporation

XR16L784
HIGH PERFORMANCE 5V AND 3.3V QUAD UART
REV. 1.0.2
AC ELECTRICAL CHARACTERISTICS
TA=0
S
T
T
T
T
T
T
T
T
T
T
YMBOL
C1,
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
WDH
WDH
RWH
WDS
RWS
WDS
OSC
ECK
RDV
RDH
ADS
ADH
RDA
RDH
CSD
CSL
RST
17D
18D
19D
WR
AS
AH
CS
DY
RD
T
o
C2
to 70
Clock Pulse Period
Oscillator Frequency
External Clock Frequency
Address Setup (16 Mode)
Address Hold (16 Mode)
Chip Select Width (16 Mode)
Delay between CS# Active Cycles (16 Mode)
Read Strobe Width (16 Mode)
Write Strobe Width (16 Mode)
Read Data Valid (16 Mode)
Write Data Setup (16 Mode)
Read Data Hold (16 Mode)
Write Data Hold (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# Width (68 Mode)
CS# Cycle Delay (68 Mode)
Delay from IOW# to Modem Output
Delay to set Interrupt from Modem Input
Delay to reset Interrupt from IOR#
Reset Pulse
o
C (-40
o
to +85
o
P
C for industrial grade package), Vcc-3.3V and 5V +/-10% unless specified.
ARAMETER
34
3,3V
M
10
10
50
50
50
40
35
15
15
10
10
10
35
10
10
10
50
50
40
5
IN
3.3V
M
16
33
15
15
50
50
50
AX
M
5V
10
50
50
50
30
25
10
10
10
10
25
10
10
10
40
40
40
8
5
5
IN
M
5V
24
50
10
10
50
35
35
AX
U
MHz
MHz
NITS
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
70 pF test
load
70 pF test
load
N
OTES