SPC8104 S-MOS Systems, SPC8104 Datasheet - Page 59

• Manufacturer Part Number: SPC8104
• Description: VGA LCD CONTROLLER
• Manufacturer: S-MOS Systems

7.7
SPC8104
Symbol
t10
t11
t12
t13
t14
t15
t16
t17
412-1.0
t1
t2
t3
t4
t5
t6
t7
t8
t9
DRAM Frame Buffer 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. address setup to LCAS#, UCAS# asserted (1st)
MA[9:0] col. address hold from LCAS#, UCAS# asserted
(2nd)
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
LCAS#, UCAS# precharge
WE# setup to LCAS#, UCAS# asserted
WE# hold from LCAS#, UCAS# asserted
WE# low pulse width
MD[15:0] read data setup to LCAS#, UCAS# negated
MD[15:0] read data hold from LCAS#, UCAS# negated
S-MOS Systems, Inc. • Tel: [phone] • Fax: [phone] • http://www.smos.com
MD[15:0]
MA[9:0]
LCAS#
UCAS#
RAS#
WE#
Figure 10 : DRAM Write Cycle Timing
Parameter
Table 0-25 DRAM Write Cycle Timing
t3
t1
row
t2
t5
t6
X15-SP-001-08.1
t16
t9
valid
t4
t17
column
Source: aXXXXXX.cdr
t12
t13
t10
0.5Ts-11
0.5Ts-5
1.5Ts-5
0.5Ts-2
0.5Ts-2
0.5Ts-2
0.5Ts-5
0.5Ts-3
valid
2Ts-12
4Ts-10
Ts-16
Ts-12
Ts-10
Ts-10
Min
Ts-7
t15
10
t14
0
t11
Hardware Functional Specification
t8
t9
t7
Typ
4Ts+12
Max
Units
SP1-33
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns