SPC8104 S-MOS Systems, SPC8104 Datasheet - Page 53

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

Parameter t13 maximum only occurs when a refresh cycle is pending during fast dot, text modes.
Typical values are much shorter.
SPC8104
Symbol
t12a
t12b
t10
t11
t13
t14
t15
412-1.0
t1
t2
t3
t4
t5
t6
t7
t8
t9
ALE pulse width
LA[23:17] valid setup to ALE asserted
LA[23:17] valid hold from ALE negated
LA[23:17] valid setup to MEMR#, MEMW# asserted
A[16:0], BHE#, MEMEN valid setup to MEMR#,
MEMW# asserted
A[16:0], BHE#, MEMEN hold from MEMR#, MEMW#
negated
valid write data delay from MEMW# asserted
valid write data hold from MEMW# negated
MEMCS16# asserted from valid LA[23:17]
MEMCS16# hold from LA[23:17] invalid
READY negated from MEMR#, MEMW# asserted
READY negated pulse width (dual panel)
READY negated pulse width (single panel)
valid read data from READY released
read data hold from MEMR# negated
MEMR# negated to D[15:0] high-impedance
S-MOS Systems, Inc. • Tel: [phone] • Fax: [phone] • http://www.smos.com
Table 0-20 CPU Bus Cycle Timing - 16-bit Memory
Parameter
X15-SP-001-08.1
Min
30
20
10
10
10
10
10
0
0
Hardware Functional Specification
Typ
101Ts
Max
52Ts
3Ts
34
50
80
30
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
SP1-27