S1D13505 Epson Electronics America, Inc., S1D13505 Datasheet - Page 74

• Manufacturer Part Number: S1D13505
• Description: LCD Controller
• Manufacturer: Epson Electronics America, Inc.

Page 68
7.3.3 EDO-DRAM Self-Refresh Timing
S1D13505
X23A-A-001-14
Symbol
t1
t2
t3
t4
t5
Memory
RAS#
CAS#
Clock
Internal memory clock period
RAS# precharge time (REG[22h] bits 3-2 = 00)
RAS# precharge time (REG[22h] bits 3-2 = 01)
RAS# precharge time (REG[22h] bits 3-2 = 10)
RAS# to CAS# precharge time (REG[22h] bits 3-2 = 00)
RAS# to CAS# precharge time (REG[22h] bits 3-2 = 01 or 10)
CAS# setup time (REG[22h] bits 3-2 = 00 or 10)
CAS# setup time (REG[22h] bits 3-2 = 01)
CAS# precharge time (REG[22h] bits 3-2 = 00)
CAS# precharge time (REG[22h] bits 3-2 = 01 or 10)
t1
t5
t3
t2
Parameter
Figure 7-17: EDO-DRAM Self-Refresh Timing
Table 7-17: EDO-DRAM Self-Refresh Timing
suspend mode
t4
Stopped for
Restarted for
active mode
1.45t1 - 3
1.45t1 - 3
0.45t1 - 3
0.45t1 - 3
2 t1 - 3
1 t1 - 3
1 t1 - 3
2 t1 - 3
1 t1 - 3
Min
25
Epson Research and Development
Hardware Functional Specification
Vancouver Design Center
Max
Issue Date: 01/02/02
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns