參數(shù)資料
型號: DSPB56367AG150
廠商: Freescale Semiconductor
文件頁數(shù): 38/100頁
文件大小: 0K
描述: IC DSP 24BIT 150MHZ 144-LQFP
標準包裝: 60
系列: DSP56K/Symphony
類型: 音頻處理器
接口: 主機接口,I²C,SAI,SPI
時鐘速率: 150MHz
非易失內(nèi)存: ROM(240 kB)
芯片上RAM: 69kB
電壓 - 輸入/輸出: 3.30V
電壓 - 核心: 1.80V
工作溫度: -40°C ~ 95°C
安裝類型: 表面貼裝
封裝/外殼: 144-LQFP
供應(yīng)商設(shè)備封裝: 144-LQFP(20x20)
包裝: 托盤
External Memory Expansion Port (Port A)
DSP56367 Technical Data, Rev. 2.1
3-18
Freescale Semiconductor
141
CAS assertion to column address not valid
tCAH
3.5
× TC 4.0
31.0
ns
142
Last column address valid to RAS deassertion
tRAL
5
× TC 4.0
46.0
ns
143
WR deassertion to CAS assertion
tRCS
1.25
× TC 4.0
8.5
ns
144
CAS deassertion to WR assertion
tRCH
1.25
× TC – 3.7
8.8
ns
145
CAS assertion to WR deassertion
tWCH
3.25
× TC 4.2
28.3
ns
146
WR assertion pulse width
tWP
4.5
× TC 4.5
40.5
ns
147
Last WR assertion to RAS deassertion
tRWL
4.75
× TC 4.3
43.2
ns
148
WR assertion to CAS deassertion
tCWL
3.75
× TC 4.3
33.2
ns
149
Data valid to CAS assertion (write)
tDS
0.5
× TC – 4.5
0.5
ns
150
CAS assertion to data not valid (write)
tDH
3.5
× TC 4.0
31.0
ns
151
WR assertion to CAS assertion
tWCS
1.25
× TC 4.3
8.2
ns
152
Last RD assertion to RAS deassertion
tROH
4.5
× TC 4.0
41.0
ns
153
RD assertion to data valid
tGA
3.25
× TC 5.7
26.8
ns
154
RD deassertion to data not valid6
tGZ
0.0
ns
155
WR assertion to data active
0.75
× TC – 1.5
6.0
ns
156
WR deassertion to data high impedance
0.25
× TC
—2.5
ns
1 The number of wait states for Page mode access is specified in the DCR.
2 The refresh period is specified in the DCR.
3 The asynchronous delays specified in the expressions are valid for DSP56367.
4 All the timings are calculated for the worst case. Some of the timings are better for specific cases (for example, t
PC equals
3
× TC for read-after-read or write-after-write sequences). An expressions is used to calculate the maximum or minimum
value listed, as appropriate.
5 BRW[1–0] (DRAM control register bits) defines the number of wait states that should be inserted in each DRAM out-of-page
access.
6 RD deassertion always occurs after CAS deassertion; therefore, the restricted timing is t
OFF and not tGZ.
Table 3-10
DRAM Page Mode Timings, Four Wait States1, 2, 3 (continued)
No.
Characteristics
Symbol
Expression4
100 MHz
Unit
Min
Max
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