SST89E554 SST [Silicon Storage Technology, Inc], SST89E554 Datasheet - Page 31

• Manufacturer Part Number: SST89E554
• Description: FlashFlex51 MCU
• Manufacturer: SST [Silicon Storage Technology, Inc]

FlashFlex51 MCU
SST89E564 / SST89V564 / SST89E554 / SST89V554
Preliminary Specifications
©2001 Silicon Storage Technology, Inc.
FIGURE
Programs the addressed code byte if the byte location has been successfully erased and not yet programmed.
Byte-Program operation is only allowed when the security lock is not activated on that flash memory block.
FIGURE
Programs the Security bits SB1, SB2 and SB3 respectively. Only a Chip-Erase will erase a programmed security bit.
P3[7:6], P2[7:6]
ALE/PROG#
P3[5:4], P2[5:0]
P3[7:6], P2[7:6]
ALE/PROG#
PSEN#
RST
P3[3]
EA#
PSEN#
4-8: B
4-9: P
RST
P3[3]
EA#
P1
P0
ROG
YTE
-P
-SB1 / P
ROGRAM
T SU
ROG
T SU
-SB2 / P
ROG
-SB3
T ADS
31
T ES
T ADS
T ES
T PROG
T PROG
1111b / 0011b / 0101b
1110b
AH
AL
DI
T DH
T PS
T DH
T PS
S71181-03-000 9/01
384 ILL F06.2
384 ILL F49.2
384