sed1355 ETC-unknow, sed1355 Datasheet - Page 75

• Manufacturer Part Number: sed1355
• Description: Sed1355 Embedded Ramdac Lcd/crt Controller
• Manufacturer: ETC-unknow

Epson Research and Development
Vancouver Design Center
7.3.3 EDO-DRAM Self-Refresh Timing
Hardware Functional Specification
Issue Date: 99/05/18
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
Max
X23A-A-001-11
SED1355
Units
Page 69
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