MB86294 Datasheet, PDF (291/305 Pages) Fujitsu Component Limited. – Grraphiics Controller specifications

FUJITSU LIMITED
PRELIMINARY and CONFIDENTIAL
There are some cases regarding AC specifications of output signals.
The following tables shows typical six cases of external SDRFAM capacitance.
(1) External SDRAM capacitance case 1
External SDRAM capacitance
SDRAM x1
Total capacitance
MCLKO
9.9pF (DRAM CLK 2.5pF, Board pattern 5pF)
MA,MRAS,MCAS,MWE 7.5pF (DRAM A.DQM 2.5pF, Board pattern 5pF)
MD,DQM
9.0pF (DRAM D 4pF, Board pattern 5pF)
Unit
pF
pF
pF
Output signals
Parameter
Rating *1
Symbol Condition
Unit
Min.
Typ.
Max.
MCLKI signal delay time against
MCLKO
tDID
0
4.2
ns
MA, MRAS, MCAS, MWE
Access time
tMAD
1.0
5.0
ns
MDQM Access time
tMDQMD
1.1
5.4
ns
MD Output access time
tMDOD
1.1
5.4
ns
(2) External SDRAM capacitance case 2
External SDRAM capacitance
SDRAM x1
Total capacitance
MCLKO
25.4pF (DRAM CLK 4.0pF, Board pattern 15pF)
MA,MRAS,MCAS,MWE 20.0pF (DRAM A.DQM 5pF, Board pattern 15pF)
MD,DQM
21.5pF (DRAM D 6.5pF, Board pattern 15pF)
Unit
pF
pF
pF
Output signals
Parameter
Rating *1
Symbol Condition
Unit
Min.
Typ.
Max.
MCLKI signal delay time against
MCLKO
tDID
0
3.5
ns
MA, MRAS, MCAS, MWE
Access time
tMAD
1.0
5.2
ns
MDQM Access time
tMDQMD
1.2
5.5
ns
MD Output access time
tMDOD
1.2
5.5
ns
MB86294/294S CORAL_LB
Graphics Controller
291
Specifications Rev. 1.0