SCN26562 データシートの表示（PDF） - Philips Electronics
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SCN26562 Datasheet PDF : 17 Pages
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Philips Semiconductors
Dual universal serial communications controller (DUSCC)
Product specification
SCN26562
AC ELECTRICAL CHARACTERISTICS (Continued)
A6–A1
CEN
WRN
tADVWRL
tCELWRL
tWRHCEH
tCEHCEL
tWRLWRH
tWRLADI
tWDVWRH
tWRHWRL
tWRHWDI
D0–D7
RDYN
tWRLRYL
1
NOTES:
1. Wait on Tx. Transmitter FIFO full.
2. Timing is illustrated and referenced to the WRN and RDN inputs. The device may also be operated with CEN as the ‘strobing’ input. CEN and RDN
(also CEN and WRN) are ANDed internally. As a consequence, the signal asserted last initiates the cycle and the signal negated first terminates the
cycle.
Figure 5. Write Cycle
SD00207
SYMBOL
PARAMETER
tADVWRL
tCELWRL
tWRLRYL
tWRHCEH
tWRLWRH
tWDVWRH
tCEHCEL
tWRLADI
tWRHWRL
tWRHWDI
Address valid to WRN low
CEN low to WRN low
WRN low to READY low
WRN high to CEN high
WRN low to WRN high
Write data valid to WRN high
CEN high to CEN low
WRN low to address invalid
WRN high to WRN low
WRN high to write data invalid
LIMITS
SCN26562C4
SCN26562C2
Min
Max
Min
Max
10
10
0
0
0
0
300
310
100
160
275
100
170
275
150
150
160
170
10
10
UNIT
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
1995 May 1
8
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