參數(shù)資料
型號(hào): 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): 108/136頁
文件大小: 2289K
代理商: EP7212
EP7212
108
DS474PP1
Figure 22. DRAM CAS Before RAS Refresh Cycle at 13 MHz and 18 MHz
NOTES:
1). t
CSA
(CAS set-up time) = 15 ns max at 18.432 MHz and 20 ns at 13 MHz
2)
t
RAS
(RAS pulse width) = 70 ns max at 18.432 MHz and 110 ns at 13 MHz
3)
t
RC
(cycle time) = 180 ns max at 18.432 MHz and 230 ns at 13 MHz
4)
The filled-in grey area is a don’t care.
When DRAMs are placed in self-refresh (entering the Standby State), the same timings, except that t
RAS
is extended indefinitely.
t
CSA
EXPCLK
Held
DRA[12:0]
RAS[3:0]
CAS[3:0]
D[31:0]
NMOE
NMWE
Row
Col
Held
t
RAS
t
RC
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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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