參數(shù)資料
型號(hào)： LRS1806A
英文描述： Flash ROM
中文描述： 閃存ROM
文件頁(yè)數(shù)： 39/45頁(yè)
文件大?。?/td> 1382K
代理商： LRS1806A
LRS1806A
37
14. Notes
This product is a stacked CSP package that a 64M (x16) bit Flash Memory and a 16M (x16) bit Smartcombo RAM are
assembled into.
- Supply Power
Maximum difference (between F-V
CC
and S-V
CC
) of the voltage is less than 0.3V.
- Power Supply and Chip Enable of Flash Memory and Smartcombo RAM (F-CE, S-CE
1
, S-CE
2
)
S-CE
1
should not be low and S-CE
2
should not be high when F-CE is low simultaneously.
If the two memories are active together, possibly they may not operate normally by interference noises or data
collision on DQ bus.
Both F-V
CC
and S-V
CC
are needed to be applied by the recommended supply voltage at the same time
except
Smartcombo RAM data retention mode.
- Power Up Sequence
When turning on Flash memory power supply, keep F-RST low. After F-V
CC
reaches over 2.7V, keep F-RST low for
more than 100 nsec.
- Device Decoupling
The power supply is needed to be designed carefully because one of the Smartcombo RAM and the Flash Memory is in
standby mode when the other is active. A careful decoupling of power supplies is necessary between
Smartcombo RAM and Flash Memory. Note peak current caused by transition of control signals (F-CE, S-CE
1
, S-CE
2
)
.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LRS1806C 制造商:Sharp Microelectronics Corporation 功能描述:COMBO 4MX16 FLASH + 1MX16 SRAM 3V 72CSP - Trays
LRS1808A 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:Flash ROM
LRS1828 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:Flash ROM
LRS1832 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:Flash ROM
LRS18AC 制造商:Sharp Microelectronics Corporation 功能描述:128M Flash Memory with 32M SmartCombo RAM
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