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SST89E516RD Fiches technique(PDF) 37 Page - Microchip Technology |
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SST89E516RD Fiches technique(HTML) 37 Page - Microchip Technology |
37 / 94 page ©2013 Silicon Storage Technology, Inc. DS25093B 02/13 37 FlashFlex MCU SST89E516RD2 / SST89E516RD SST89V516RD2 / SST89V516RD Data Sheet Chip-Erase The Chip-Erase command erases all bytes in both memory blocks. This command is only allowed when EA#=0 (external memory execution). Additionally this command is not permitted when the device is in level 4 locking. In all other instances, this command ignores the Security Lock status and will erase the security lock bits and re-map bits. Figure 9: Chip Erase Block-Erase The Block-Erase command erases all bytes in one of two memory blocks (Block 0 or Block 1). The selection of the memory block to be erased is determined by the SFCF[1:0]. The Block-Erase com- mand sequence for SST89x516RDx is as follows: Figure 10:Block Erase Set-Up MOV SFDT, #55H Interrupt scheme MOV SFCM, #81H Polling scheme MOV SFCM, #01H INT1 interrupt indicates completion SFST[2] indicates operation completion IAP Enable ORL SFCF, #40H 1273 F05.0 Set-Up MOV SFDT, #55H IAP Enable ORL SFCF, #40H Interrupt scheme MOV SFCM, #8DH Polling scheme MOV SFCM, #0DH INT1 interrupt indicates completion SFST[2] indicates operation completion Select Block Configure SFCF[1:0] * 1273 F06.0 Note: * see Table 13 |
Numéro de pièce similaire - SST89E516RD |
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Description similaire - SST89E516RD |
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