參數(shù)資料
型號: SST89E54RC-33-C-PIE
廠商: Microchip Technology
文件頁數(shù): 25/71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
31
FlashFlex MCU
SST89E52RC / SST89E54RC
Data Sheet
A Microchip Technology Company
Secure-Page0, Secure-Page1, Secure-Page2, Secure-Page3, and Secure-Page4
Secure-Page0, Secure-Page1, Secure-Page2, Secure-Page3, and Secure-Page4 commands are
used to program the page security bits. Upon completion of any of these commands, the page security
options will be updated immediately.
Page security bits previously in un-programmed state can be programmed by these commands. The
factory setting for these bits is all “1”s which indicates the pages are not security locked.
Select Page
Secure_Page0: MOV SFAH, #90H
Secure_Page1: MOV SFAH, #91H
Secure_Page2: MOV SFAH, #92H
Secure_Page3: MOV SFAH, #93H
Secure_Page4: MOV SFAH, #94H
SFCF[7] indicates
operation complete
Command Execution
MOV SFCM, #03H
1259 F10.0
IAP Enable
ORL SFCF, #40H
Feed Sequence
MOV SFIS0, #A2H
MOV SFIS1, #DFH
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