參數(shù)資料
型號(hào): ELANSC400ANDELANSC410
廠商: Advanced Micro Devices, Inc.
英文描述: Single Synchronous Buck Pulse-Width Modulation (PWM) Controller; Temperature Range: 0&degC to 70°C; Package: 14-SOIC T&R
中文描述: ElanSC400和ElanSC410 -單芯片。低功耗。的PC / AT兼容微控制器
文件頁(yè)數(shù): 98/132頁(yè)
文件大小: 2400K
代理商: ELANSC400ANDELANSC410
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98
élanSC400 and élanSC410 Microcontrollers Data Sheet
Table 37.
DRAM Cycles
Symbol
Parameter Description
Notes
33-MHz
External Bus
Min
5
42.75
14.25
0
14.25
42.75
28.5
28.5
14.25
71.25
85.5
66.5
57
114
57
66.5
35
20
22
40
0
5
Unit
Max
t1
t2
t3
t4
t5
t6a
t6a
t6b
t7a
t7b
t8a
t8b
t9a
t9b
t9c
t10
t11
t12a
t12b
t13
t14a
t14b
t15
t16
t17
t18
t19
t20
t21
t22
t23
t24
t25
t26
t27
t28
t29
t30
t31
t32
t33
Row address setup time
RAS to CAS delay
Row address hold time
Column address setup time
Column address hold time
CAS pulse width (CPU, Fast Page mode)
CAS pulse width (graphics controller, Fast Page mode)
CAS pulse width (EDO mode)
CAS precharge (non-interleaved)
CAS precharge (interleaved)
CAS hold
CAS hold (EDO)
Fast page mode cycle time (non-interleaved)
Fast page mode cycle time (interleaved)
EDO mode cycle time
Access time from RAS
Access time from column address
Access time from CAS
Access time from CAS (EDO)
Access time from CAS precharge
Read data hold from CAS
Read data hold from CAS (EDO)
MA12–MA0 switching time
Delay between bank CAS signals
MWE setup to CAS
MWE hold from CAS
Write data setup to CAS
Write data hold from CAS
RAS precharge
RAS pulse width
RAS hold
MWE low from CAS (EDO data disable)
MWE pulse width (EDO)
Data high impedance from MWE
RAS to CAS precharge time
CAS setup time (CAS-before-RAS refresh)
CAS hold time (CAS-before-RAS refresh)
RAS pulse width during self-refresh cycle
RAS precharge time during self-refresh cycle
WE setup time (CAS-before-RAS refresh)
WE hold time (CAS-before-RAS refresh)
1
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
us
ns
ns
ns
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
15
15
1
1
10
30
10
30
60
75
28.5
14.25
14.25
1
1
1
1
1
1
1
1
1
15
1
15
10
25
100
130
25
25
1
1
1
1
1
1
Notes:
1. All timings assume 70-ns DRAMs, fastest programmable timing, and a 66-MHz clock for the memory controller.
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