SPC8104 S-MOS Systems, SPC8104 Datasheet - Page 60

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

7.8
7.9
Hardware Functional Specification
Symbol
SP1-34
These timing values apply to CAS-before-RAS refresh cycles occurring during all active modes
and Doze modes
t1
t2
t3
t4
t5
t6
Figure 11 : DRAM Refresh Timing I (generated from CLKI, Sequencer
DRAM Refresh Timing I
DRAM Refresh Timing II
RAS# high pulse width
RAS# low pulse width
LCAS#, UCAS# high pulse width
LCAS#, UCAS# setup to RAS# asserted
(CAS-before-RAS refresh)
LCAS#, UCAS# low pulse width
LCAS#, UCAS# negated to RAS# asserted
S-MOS Systems, Inc. • Tel: [phone] • Fax: [phone] • http://www.smos.com
SPC8104 outputs
SPC8104 outputs
RAS#
LCAS#,
UCAS#
RAS#
LCAS#,
UCAS#
Table 0-26 DRAM Refresh Timing I (generated from CLKI, Sequencer running)
Figure 12 : DRAM Refresh Timing II (Sequencer
t1
t1
t3
t2
Parameter
t4
t3
X15-SP-001-08.1
t5
t5
t2
t4
stopped)Source:a000077.cdr
3.5Ts-10
0.5Ts-7
2.5Ts-9
2Ts-12
4Ts-10
Ts-5
Min
t6
t6
running)Source: a000076.cdr
Typ
Max
Ts
412-1.0
SPC8104
Units
ns
ns
ns
ns
ns
ns