SPC8106 S-MOS Systems, SPC8106 Datasheet - Page 80

• Manufacturer Part Number: SPC8106
• Description: LCD/CRT VGA CONTROLLER
• Manufacturer: S-MOS Systems

7.8
Hardware Functional Specification
Symbol
SP1-38
SPC8106 outputs
t10
t11
t12
t13
t14
t15
t16
t17
t1
t2
t3
t4
t5
t6
t7
t8
t9
DRAM Write Cycle Timing
MA[9:0] row address setup to RAS# asserted
MA[9:0] row address hold from RAS# asserted
RAS# precharge
RAS# pulse width
RAS# asserted to LCAS#, UCAS# asserted
MA[9:0] col addr setup to LCAS#, UCAS# asserted (1st)
MA[9:0] col addr hold from LCAS#, UCAS# asserted(1st)
LCAS#, UCAS# asserted to RAS# negated
LCAS#, UCAS# pulse width
MD[15:0] write data setup to LCAS#, UCAS# asserted
MD[15:0] write data hold from LCAS#, UCAS# asserted
MA[9:0] col addr setup to LCAS#, UCAS# asserted (2 nd )
MA[9:0] col addr held from LCAS#, UCAS# asserted (2 nd )
LCAS#, UCAS# precharge
WE# setup to LCAS#, UCAS# asserted
WE# hold from LCAS#, UCAS# asserted
WE# pulse width
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MD[15:0]
MA[9:0]
LCAS#
UCAS#
Figure 11 : DRAM Write Cycle Timing
RAS#
WE#
Parameter
Table 0-27
t3
t1
row
t2
t5
t15
DRAM Write Cycle Timing
t10
t6
X12-SP-001-07
valid
column 1
t17
t16
t11
t9
t4
t7
source: 8106_write_01.can
t14
t15
t12
t10
3.5Ts+3
0.5Ts+3
0.5Ts+6
1.5Ts-5
0.5Ts-5
0.5Ts-4
0.5Ts-1
valid
2Ts-10
.5Ts+1
Ts-16
0.5Ts
Ts-15
Ts-10
0.5Ts
Ts-3
Ts-2
Min
t17
column 2
t16
0
t11
t8
t9
t13
Typ
Max
Units
411-1.0
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
SPC8106