參數(shù)資料
型號： SST89E54RC-33-C-PIE
廠商： Microchip Technology
文件頁數(shù)： 39/71頁
文件大?。?/td> 0K
描述： IC MCU 8BIT 17KB FLASH 40PDIP
標準包裝： 9
系列： FlashFlex®
核心處理器： 8051
芯體尺寸： 8-位
速度： 33MHz
連通性： EBI/EMI，UART/USART
外圍設備： POR，WDT
輸入/輸出數(shù)： 32
程序存儲器容量： 16KB（16K x 8）
程序存儲器類型： 閃存
EEPROM 大?。?/td> 1K x 8
RAM 容量： 512 x 8
電壓 - 電源 (Vcc/Vdd)： 4.5 V ~ 5.5 V
振蕩器型： 外部
工作溫度： 0°C ~ 70°C
封裝/外殼： 40-DIP（0.600"，15.24mm）
包裝： 管件
2011 Silicon Storage Technology, Inc.
DS25088A
10/11
44
FlashFlex MCU
SST89E52RC / SST89E54RC
Data Sheet
A Microchip Technology Company
Security Lock
The security lock protects against software piracy and prevents the contents of the flash from being
read by unauthorized parties. It also protects against code corruption resulting from accidental erasing
and programming to the internal flash memory. There are two different types of security locks in the
device security lock system: Chip-Level Security Lock and Page-Level Security Lock.
Chip-Level Security Lock
There are four types of chip-level security locks.
1.
Disable External MOVC instruction
2.
Disable External Host Mode (Except Read Chip ID and Chip-Erase commands)
3.
Disable Boot from External Memory
4.
Disable External IAP commands (Except Chip-Erase commands)
Users can turn on these security locks in any combination to achieve the security protection scheme.
To unlock security locks, the Chip-Erase command must be used.
Disable External MOVC instruction
When Disable-Extern-MOVC command is executed either by External Host Mode command or IAP
Mode Command, MOVC instructions executed from external program memory are disabled from fetch-
ing code bytes from internal memory.
Disable External Host Mode
When Disable-Extern-Host-Cmd command is executed either by External Host Mode Command or IAP
Mode Command, all external host mode commands are disabled except Chip-Erase command and
Read-ID command.
Upon activation of this option, the device can not be accessed through external host mode. User can
not verify and copy the contents of the internal flash
Disable Boot From External Memory
When Disable-Extern-Boot command is executed either by External Host Mode Command or IAP
Mode Command, the EA pin value will be ignored during chip Reset and always boot from the internal
memory.
Disable External IAP Commands
When Disable-Extern-IAP command is executed either by External Host Mode Command or IAP Mode
Command, all IAP commands executed from external memory are disabled except Chip-Erase com-
mand. All IAP commands executed from internal memory are allowed if the Page Lock is not set.
Page-Level Security Lock
When any of Secure-Page0, Secure-Page1, Secure-Page2, Secure-Page3, or Secure-Page4 com-
mand is executed, the individual page (Page0, Page1, Page2, Page3, or Page4) will enter secured
mode. No part of the page can be verified by either External Host mode commands or IAP commands.
MOVC instructions are also unable to read any data from the page.
相關PDF資料
PDF描述
SST89E58RD2-40-I-TQJE IC MCU 8BIT FLASH 44TQFP
SST89V58RD2-33-I-TQJE IC MCU 8BIT 40KB FLASH 44TQFP
SSTUB32S869BHLFT IC REGIST BUFF 14BIT DDR2 150BGA
ST16C1450CJ28-F IC UART FIFO 1B 28PLCC
ST16C2450CJ44-F IC DUART 44PLCC
相關代理商/技術參數(shù)
參數(shù)描述
SST89E54RD 制造商:SST 制造商全稱:Silicon Storage Technology, Inc 功能描述:FlashFlex MCU
SST89E54RD2 制造商:SST 制造商全稱:Silicon Storage Technology, Inc 功能描述:FlashFlex51 MCU
SST89E54RD2/RD 制造商:SST 制造商全稱:Silicon Storage Technology, Inc 功能描述:FlashFlex51 MCU
SST89E54RD2-33-C-NI 制造商:SST 制造商全稱:Silicon Storage Technology, Inc 功能描述:FlashFlex51 MCU
SST89E54RD2-33-C-NIE1 制造商:SST 制造商全稱:Silicon Storage Technology, Inc 功能描述:FlashFlex51 MCU
發(fā)布緊急采購，3分鐘左右您將得到回復。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*