參數(shù)資料
型號(hào)： SST89E52RC-33-C-PIE
元件分類(lèi)： 微控制器/微處理器
英文描述： 8-BIT, FLASH, 33 MHz, MICROCONTROLLER, PDIP40
封裝： ROHS COMPLIANT, PLASTIC, MS-011AC, DIP-40
文件頁(yè)數(shù)： 21/57頁(yè)
文件大?。?/td> 652K
代理商： SST89E52RC-33-C-PIE
28
Data Sheet
FlashFlex MCU
SST89E52RC / SST89E54RC
2007 Silicon Storage Technology, Inc.
S71259-04-000
1/07
4.2.3.1 Chip-Erase
The Chip-Erase command erases all bytes in both memory
partitions. This command is only allowed when EA#=0
(external memory execution).
Chip-Erase ignores the Security setting status and will
erase all settings on all pages and the different chip-level
security restrictions, returning the device to its Unlocked
state. The Chip-Erase command will also erase the boot
vector setting. Upon completion of Chip-Erase command,
the chip will boot from the default setting. See Table 4-2 for
the default boot vector setting.
4.2.3.2 Partition0-Erase
The Partition0-Erase command erases all bytes in memory
partition 0. All security bits associated with Page0-3 are
also reset.
4.2.3.3 Sector-Erase
The Sector-Erase command erases all of the bytes in a
sector. The sector size for the flash memory blocks is 128
Bytes. The selection of the sector to be erased is deter-
mined by the contents of SFAH and SFAL.
TABLE
4-2: Default Boot Vector Settings
Device
Address
SST89E54RC
4000H
SST89E52RC
2000H
T4-2.1 1259
Set-Up
MOV SFDT, #55H
Feed Sequence
MOV SFIS0, #A2H
MOV SFIS1, #DFH
Command Execution
MOV SFCM, #01H
SFCF[7] indicates
operation completion
IAP Enable
ORL SFCF, #40H
1259 F05.0
Set-Up
MOV SFDT, #55H
IAP Enable
ORL SFCF, #40H
Command Execution
MOV SFCM, #0DH
SFCF[7] indicates
operation completion
1259 F06.0
Feed Sequence
MOV SFIS0, #A2H
MOV SFIS1, #DFH
Program sector address
MOV SFAH, #sector_addressH
MOV SFAL, #sector_addressL
Command Execution
MOV SFCM, #0BH
SFCF[7] indicates
operation completion
1259 F07.0
IAP Enable
ORL SFCF, #40H
Feed Sequence
MOV SFIS0, #A2H
MOV SFIS1, #DFH
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