FlashFlex51 MCU
SST89E52RD2 / SST89E54RD2 / SST89E58RD2 / SST89E516RD2
SST89V52RD2 / SST89V54RD2 / SST89V58RD2 / SST89V516RD2
Preliminary Specifications
T
SU
RST
T
ES
PSEN#
T
ADS
ALE/PROG#
T
T
DH
PROG
EA#
P3[3]
T
PB
P3[5:4], P2[5:0]
P1
AH
AL
P0
DI
P3[7:6], P2[7:6]
1110b
1255 F52.0
FIGURE 14-20: BYTE-PROGRAM
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.
T
SU
RST
T
ES
PSEN#
T
ADS
ALE/PROG#
T
T
DH
PROG
EA#
P3[3]
T
PS
P3[7:6], P2[7:6]
1111b / 0011b / 0101b
1255 F53.0
FIGURE 14-21: PROG-SB1 / PROG-SB2 / PROG-SB3
Programs the Security bits SB1, SB2 and SB3 respectively. Only a Chip-Erase will erase a programmed security bit.
©2004 Silicon Storage Technology, Inc.
S71255-00-000
3/04
85