Features................................................................................................. 1

说明................................................. ........................................... 2

框图................................................ ....................................... 3

引脚说明................................................ ................................ 4

Pinout.................................................................................................................... 4

信号.................................................................................................................. 6

典型应用................................................ ............................. 11

推荐的外部元件............................................... .................. 11

PCB对建议................................................ ..................................... 12

时钟控制器................................................ .................................. 13

介绍.........................................................................................................

Oscillator.............................................................................................................

PLL .....................................................................................................................

Registers.............................................................................................................

13

13

14

16

SFR映射................................................ ....................................... 18

双数据指针寄存器.............................................. .................. 25

程序/代码存储器.............................................. ........................ 27

外部程序存储器访问.............................................. ............................

闪存架构............................................... ..................................

FM0业务概述.............................................. ................................

Registers.............................................................................................................

27

28

29

35

闪存EEPROM存储器............................................... ...................... 36

概述................................................ ............................................

Features..............................................................................................................

闪存编程和擦除.............................................. ..........................

闪存寄存器和存储器映射............................................. .........................

闪存状态............................................... ...........................................

存储器结构................................................ .........................................

36

36

36

37

40

40

EEPROM数据存储器............................................... ........................ 41

Description..........................................................................................................

在列锁存器写入数据............................................ ..........................

程序设计......................................................................................................

读Data...........................................................................................................

Registers.............................................................................................................

41

41

41

41

42

在系统编程（ ISP ） ........................................... ................ 43

182

AT89C5131A-L

4338F–USB–08/07