SST89V54RD2 Silicon Storage Technology, Inc., SST89V54RD2 Datasheet - Page 21

• Manufacturer Part Number: SST89V54RD2
• Description: Flashflex51 Mcu
• Manufacturer: Silicon Storage Technology, Inc.

FlashFlex MCU
SST89V54RD2/RD / SST89V58RD2/RD
SuperFlash Data Register (SFDT)
SuperFlash Status Register (SFST) (Read Only Register)
©2007 Silicon Storage Technology, Inc.
Location
Location
B5H
B6H
Symbol
SFDT
Symbol
SB1
SB2
SB3
EDC
FLASH_BUSY Flash operation completion polling bit.
SB1_i
_i
_i
_i
7
_i
7
SB2_i
6
6
Function
Mailbox register for interfacing with flash memory block. (Data register).
Function
Security Bit 1 status (inverse of SB1 bit)
Security Bit 2 status (inverse of SB2 bit)
Security Bit 3 status (inverse of SB3 bit)
Please refer to Table 9-1 for security lock options.
Double Clock Status
0: 12 clocks per machine cycle
1: 6 clocks per machine cycle
0: Device has fully completed the last IAP command.
1: Device is busy with flash operation.
SB3_i
5
5
SuperFlash Data Register
4
-
4
21
EDC_i
3
3
FLASH_BUSY
2
2
1
1
-
0
0
-
S71255-10-000
Reset Value
Reset Value
Data Sheet
xxxxx0xxb
00H
12/07