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參數(shù)資料
型號: DSP56301PW80
廠商: Freescale Semiconductor
文件頁數(shù): 69/124頁
文件大小: 0K
描述: IC DSP 24BIT 80MHZ 208-LQFP
標準包裝: 36
系列: DSP563xx
類型: 定點
接口: 主機接口,SSI,SCI
時鐘速率: 80MHz
非易失內存: ROM(9 kB)
芯片上RAM: 24kB
電壓 - 輸入/輸出: 3.30V
電壓 - 核心: 3.30V
工作溫度: -40°C ~ 100°C
安裝類型: 表面貼裝
封裝/外殼: 208-LQFP
供應商設備封裝: 208-LQFP
包裝: 托盤
AC Electrical Characteristics
DSP56301 Technical Data, Rev. 10
Freescale Semiconductor
2-23
Table 2-13.
DRAM Out-of-Page and Refresh Timings, Eleven Wait States1, 2
No.
Characteristics3
Symbol
Expression
80 MHz
100 MHz
Unit
Min
Max
Min
Max
157
Random read or write cycle time
tRC
12
× TC
150.0
120.0
ns
158
RAS assertion to data valid (read)
tRAC
80 MHz:
6.25
× TC 6.5
100 MHz:
6.25
× TC 7.0
71.6
55.5
ns
159
CAS assertion to data valid (read)
tCAC
80 MHz:
3.75
× TC 6.5
100 MHz:
3.75
× TC 7.0
40.4
30.5
ns
160
Column address valid to data valid (read)
tAA
80 MHz:
4.5
× TC 6.5
100 MHz:
4.5
× TC 7.0
49.8
38.0
ns
161
CAS deassertion to data not valid (read hold time)
tOFF
0.0
0.0
ns
162
RAS deassertion to RAS assertion
tRP
4.25
× TC 4.0
49.1
38.5
ns
163
RAS assertion pulse width
tRAS
7.75
× TC 4.0
92.9
73.5
ns
164
CAS assertion to RAS deassertion
tRSH
5.25
× TC 4.0
61.6
48.5
ns
165
RAS assertion to CAS deassertion
tCSH
6.25
× TC 4.0
74.1
58.5
ns
166
CAS assertion pulse width
tCAS
3.75
× TC 4.0
42.9
33.5
ns
167
RAS assertion to CAS assertion
tRCD
2.5
× TC ± 4.0
27.3
35.3
21.0
29.0
ns
168
RAS assertion to column address valid
tRAD
1.75
× TC ± 4.0
17.9
25.9
13.5
21.5
ns
169
CAS deassertion to RAS assertion
tCRP
5.75
× TC 4.0
67.9
53.5
ns
170
CAS deassertion pulse width
tCP
4.25
× TC – 6.0
49.1
36.5
ns
171
Row address valid to RAS assertion
tASR
4.25
× TC 4.0
49.1
38.5
ns
172
RAS assertion to row address not valid
tRAH
1.75
× TC 4.0
17.9
13.5
ns
173
Column address valid to CAS assertion
tASC
0.75
× TC 4.0
5.4
3.5
ns
174
CAS assertion to column address not valid
tCAH
5.25
× TC 4.0
61.6
48.5
ns
175
RAS assertion to column address not valid
tAR
7.75
× TC 4.0
92.9
73.5
ns
176
Column address valid to RAS deassertion
tRAL
6
× TC 4.0
71.0
56.0
ns
177
WR deassertion to CAS assertion
tRCS
3.0
× TC 4.0
33.5
26.0
ns
178
CAS deassertion to WR4 assertion
tRCH
1.75
× TC – 3.7
17.9
13.8
ns
179
RAS deassertion to WR4 assertion
tRRH
80 MHz:
0.25
× TC 2.6
100 MHz:
0.25
× TC 2.0
0.5
0.5
ns
180
CAS assertion to WR deassertion
tWCH
5
× TC 4.2
58.3
45.8
ns
181
RAS assertion to WR deassertion
tWCR
7.5
× TC 4.2
89.6
70.8
ns
182
WR assertion pulse width
tWP
11.5
× TC 4.5
139.3
110.5
ns
183
WR assertion to RAS deassertion
tRWL
11.75
× TC 4.3
142.7
113.2
ns
184
WR assertion to CAS deassertion
tCWL
10.25
× TC 4.3
123.8
98.2
ns
185
Data valid to CAS assertion (write)
tDS
5.75
× TC 4.0
67.9
53.5
ns
186
CAS assertion to data not valid (write)
tDH
5.25
× TC 4.0
61.6
48.5
ns
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