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A D V A N权证
我N· R M一T I O 4 N
擦除和编程性能.............. 163
引脚TSOP和BGA封装电容......... 163
图20.备用CE #控制的写(擦除/
程序)操作时序.............................................. 162
PSRAM 2型............................................... 0.164
功能................................................. ............... 164
产品信息............................................ 164
引脚说明................................................ ..... 164
上电顺序............................................. 165
时序图................................................ ... 166
上电............................................................................................................ 166
图21.上电1 ( CS1 #控制) ............................ 166
图22.上电2 ( CS2控制) .............................. 166
PSRAM类型6 ............................................... 0.174
功能................................................. ................
引脚说明................................................ .....
功能说明.........................................
绝对最大额定值................................
DC推荐工作条件
( TA = -40 ° C至85°C ) ..................................... .......
DC特性(Ta = -40 ° C至85°C ,
VDD = 2.6 3.3 V ) (见注3 4 ) ................
电容( TA = 25 ° C,F = 1兆赫) ....................
AC特性和工作
情况................................................. ............
图29.定时写周期的波形( 3 )
( CS2控制) .............................................. ............... 173
图30.定时写周期的波形( 4 ) ( UB # , LB #
控制) ................................................ ..................... 173
174
174
175
175
175
176
176
176
功能说明........................................ 166
................................. 167绝对最大额定值
DC推荐工作条件......... 167
电容( TA = 25 ° C,F = 1兆赫) .................... 167
DC和工作特性..................... 167
交流工作条件................................... 169
常见.............................................................................................................. 167
16M PSRAM .........................................................................................................168
32M PSRAM ........................................................................................................168
64M PSRAM ........................................................................................................ 169
测试条件(测试负载和测试输入/输出参考) ....... 169
ACC特性(Ta = -40 ° C至85°C ,V
CC
= 2.7 3.1 V) ........ 170
图23.输出负载............................................. ........ 169
AC测试条件.............................................. 177
时序图................................................ ... 178
读时序.......................................................................................................178
写时序................................................ .................................................. 180 ..
图1.读周期............................................. ........... 178
图2页读周期( 8个字访问) ....................... 179
图3.写周期# 1 ( WE#控制) (见注8 ) ...... 180
图4.写周期# 2 ( CE #控制) (见注8 ) ....... 181
图5.深度掉电时序.................................... 181
图6.上电时序........................................... ..... 181
图7.阅读.............................................. .................. 182
( TA = -40 ° C至85°C , VDD = 2.6 3.3 V ) (见注5 11) ............ 176
时序图................................................ 171 ....
读时序....................................................................................................... 171
图24.时序读周期的波形( 1 ) ...................... 171
图25.时序读周期的波形( 2 ) ...................... 171
图26.时序读周期的波形( 2 ) ...................... 171
图27.写周期# 1 ( WE#控制) ........................ 172
图28.写周期# 2 ( CS1 #控制) ....................... 172
深度掉电时序............................................. ................................. 181
上电时序.............................................. .................................................. 181
地址偏移的规定.............................................. ............................. 182
读...................................................................................................................182
写.................................................................................................................182
写时序................................................ .................................................. 172 ..
修订摘要......................................... 183
图8.写.............................................. .................. 182
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2004年27631A5 9月28日,

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