USBN9603-28M National Semiconductor, USBN9603-28M Datasheet - Page 54

• Manufacturer Part Number: USBN9603-28M
• Description: USB Controller IC
• Manufacturer: National Semiconductor

Specifications of USBN9603-28M

• Interface: USB
• No. Of Pins: 28
• Peak Reflow Compatible (260 C): No
• Supply Voltage Max: 7V
• Leaded Process Compatible: No
• Controller Type, Ic: USB
• Package / Case: 28-WSOIC
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

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8.0 Device Characteristics
8.4 PARALLEL INTERFACE TIMING (MODE1-0 = 00
(3.0V< V
same time.
Symbol
Note: The setup time t
t
WHCH
1. Internal Clock: CKI = 48 MHz on this device
2. Memory Clock: MCLK = CKI/4 = 12 MHz
3. Time until next read or write occurs
t
t
t
t
t
t
t
RDH
t
t
t
RDV
WW
RW
WC
RC
DH
AS
AH
DS
CC
Address Setup Time
Address Hold Time
Read Pulse Width
Read Cycle Time
Data Output Valid after Read Low
Data Output Hold after Read High
Write Pulse Width
Write Cycle Time
Write High to CS High
Data Input Setup Time
Data Input Hold Time
< 5.5V, 0˚C < TA< +70˚C, unless otherwise specified)
D7-0 Output
AS
CS
A0
is defined relative to the first transition of either CS or RD. All three signals may switch at the
RD
Parameter
2 3
2 3
1
1
Figure 25. Non-Multiplexed Mode Read Timing
(Continued)
t
AS
t
(Consecutive Read Cycles Shown)
RDV
t
RW
Valid
B
)
54
t
RDH
Conditions
C
C
C
C
C
C
C
C
C
C
C
L
L
L
L
L
L
L
L
L
L
L
t
RC
= 50 pF
= 50 pF
= 50 pF
= 50 pF
= 50 pF
= 50 pF
= 50 pF
= 50 pF
= 50 pF
= 50 pF
= 50 pF
Valid
3/MCLK
3/MCLK
1/CKI
1/CKI
Min
10
25
0
0
2
8
Typ
20
Max
30
Units
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS