參數(shù)資料
型號: ELANSC300-25KC
廠商: ADVANCED MICRO DEVICES INC
元件分類: 微控制器/微處理器
英文描述: Highly Integrated, Low-Power, 32-Bit Microcontroller
中文描述: 32-BIT, 25 MHz, MICROCONTROLLER, PQFP208
封裝: SHRINK, PLASTIC, QFP-208
文件頁數(shù): 102/139頁
文件大小: 1388K
代理商: ELANSC300-25KC
102
élanSC300 Microcontroller Data Sheet
P R E L I M I N A R Y
Notes:
These timings are based on 33-MHz operation (70 ns or faster DRAM recommended).
Table 52.
DRAM Memory Interface, Page Hit and Refresh Cycle (See Figures 36 and 37)
Symbol
Parameter Description
Notes
Preliminary
Unit
Min
Max
t30
t31
t32
t37
t38
t39
t41
t42
t43
t45
t46
t47
t48
t49
t50
t51
t53
MA valid setup to RAS Low
MA hold from RAS Low
MA setup to CAS Low
CAS precharge (Page mode)
MA hold from CAS active
RAS to CAS delay
CAS pulse width (page hit)
MWE setup to CAS Low (page hit)
MWE hold from CAS Low
CAS cycle time (Page mode)
CAS
Low to D15–D0 valid (read access time)
D15–D0 hold from CAS High (read)
D15–D0 setup to CAS Low (write)
D15–D0 hold from CAS Low (write)
CAS Low to RAS Low (refresh)
CAS hold from RAS Low (refresh)
RAS pulse width (suspend refresh)
0
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
10
0
10
15
20
20
0
15
45
10,000
20
0
0
15
10
70
80
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