32WQ和64WQ家庭与异步RAM
目录
1.0
介绍
.............................................................................................................. 6
1.1
命名法..................................................................................................... 6
1.2
约定....................................................................................................... 7
功能概述
.................................................................................................. 8
2.1
框图................................................ .................................................. 8 ..
2.2
闪存存储器映射和分区............................................. ........................... 9
包装信息
............................................................................................... 10
Ballout和信号说明
................................................................................. 13
4.1
信号Ballout ................................................ .................................................. 13
4.2
信号说明................................................ ............................................ 14
最大额定值和工作条件............................................. ...............
16
5.1
绝对最大额定值............................................... .................................. 16
5.2
工作条件................................................ ......................................... 16
5.3
Capacitance...................................................................................................... 17
电气规格
........................................................................................... 18
6.1
直流特性................................................ ............................................. 18
AC特性
................................................................................................... 20
7.1
闪光交流特性............................................... ...................................... 20
7.2
SRAM交流特性............................................... ..................................... 20
7.3
PSRAM交流特性............................................... .................................... 22
7.4
AC设备测试条件.............................................. .................................... 27
闪存功耗
....................................................................................... 28
设备操作
..................................................................................................... 29
9.1
公交运营................................................ ................................................. 29
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
10.0 Flash命令定义
..................................................................................... 33
11.0 Flash读Operations.............................................................................................
33
12.0闪存程序操作
....................................................................................... 33
13.0闪存擦除操作
............................................................................................ 33
14.0 FLASH安全模式
............................................................................................... 33
15.0闪存读取配置寄存器
........................................................................... 33
16.0 SRAM Operations.....................................................................................................
34
16.1上电顺序和初始化........................................... ........................ 34
16.2数据保存方式.............................................. ........................................... 34
17.0 PSRAM Operations...................................................................................................
36
17.1上电顺序和初始化........................................... ........................ 36
17.1.1的16Mbit PSRAM上电顺序（非页面模式） ................................. 36
17.2待机模式/深度掉电模式......................................... ...................... 37
17.3 PSRAM特殊的读取和写入约束........................................... ................ 37
A
B
C
D
写状态机
................................................................................................ 38
通用闪存接口............................................... ...........................................
38
闪存流程图
..................................................................................................... 38
附加信息
............................................................................................ 38
2007年11月
订单号： 251407-13
数据表
3
