參數(shù)資料
型號: EP7212
廠商: Cirrus Logic, Inc.
英文描述: HIGH-PERFORMANCE, LOW-POWER SYSTEM-ON-CHIP WITH LCD CONTROLLER AND DIGITAL AUDIO INTERFACE(DAI)
中文描述: 高性能,低功耗系統(tǒng)與LCD控制器和數(shù)字音頻接口(DAI芯片)
文件頁數(shù): 105/136頁
文件大?。?/td> 2289K
代理商: EP7212
EP7212
DS474PP1
105
Figure 18. DRAM Write Cycles at 13 MHz and 18 MHz
NOTES:
1)
2)
3)
4)
5)
6)
t
RC
(Write cycle time) = 150 ns max at 18.432 MHz and 230 ns at 13 MHz
t
RAS
(RAS pulse width) = 70 ns max at 18.432 MHz and 110 ns at 13 MHz
t
RP
(RAS precharge time) = 70 ns max at 18.432 MHz and 110 ns at 13 MHz
t
CAS
(CAS pulse width) = 20 ns max at 18.432 MHz and 30 ns at 13 MHz
t
CP
(CAS precharge in page mode) = 66 ns max at 18.432 MHz and 140 ns at 13 MHz
t
PC
(Page mode cycle time) = 100 ns min at max at 18.432 MHz and 140 ns at 13 MHz
Word writes shown, for byte writes, only one off
nCAS[3:0]
will be active,
nCAS0
for byte 0, etc.
ROW
COL
DRA[12:0]
EXPCLK
D[31:0]
t
RAS
ROW
COL1
COL2
NRAS[1:0]
NCAS[3:0]
t
RC
COLn
Data Out
Data Out 1
Data Out 2
Data Out n
t
RP
T10
t9
t11
t
CAS
t
CP
t
PC
t12
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EP7212-CV-A 制造商:CIRRUS 制造商全稱:Cirrus Logic 功能描述:HIGH-PERFORMANCE, LOW-POWER SYSTEM-ON-CHIP WITH LCD CONTROLLER AND DIGITAL AUDIO INTERFACE(DAI)
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