FlashFlex MCU
SST89E516RD2 / SST89E516RD
SST89V516RD2 / SST89V516RD
Data Sheet
2FFH
FFH
FFH
80H
Expanded
RAM
768 Bytes
(Indirect Addressing)
(Direct Addressing)
Special
Function
Registers
(SFRs)
Upper 128 Bytes
Internal RAM
80H
7FH
Lower 128 Bytes
Internal RAM
(Indirect & Direct
Addressing)
(Indirect Addressing)
000H
00H
FFFFH
FFFFH
(Indirect Addressing)
(Indirect Addressing)
External
Data
Memory
External
Data
Memory
0300H
2FFH
000H
Expanded RAM
0000H
EXTRAM = 0
EXTRAM = 1
1273 F02.0
FIGURE
3-2: Internal and External Data Memory Structure
©2007 Silicon Storage Technology, Inc.
S71273-03-000
1/07
15
SST [ SILICON STORAGE TECHNOLOGY, INC ]
