SST89V58RD Silicon Storage Technology, SST89V58RD Datasheet - Page 11

• Manufacturer Part Number: SST89V58RD
• Description: FlashFlex51 MCU
• Manufacturer: Silicon Storage Technology

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FlashFlex51 MCU
SST89E52RD2/RD / SST89E54RD2/RD / SST89E58RD2/RD
SST89V52RD2/RD / SST89V54RD2/RD / SST89V58RD2/RD
3.0 MEMORY ORGANIZATION
The device has separate address spaces for program and
data memory.
3.1 Program Flash Memory
There are two internal flash memory blocks in the device.
The primary flash memory block (Block 0) has 8/16/32
KByte. The secondary flash memory block (Block 1) has 8
KByte. Since the total program address space is limited to
64 KByte, the SFCF[1:0] bit are used to control program
©2006 Silicon Storage Technology, Inc.
FIGURE
FFFFH
0000H
3-1: Program Memory Organization for 8 KByte SST89x52RDx
EA# = 0
64 KByte
External
DFFFH
FFFFH
1FFFH
E000H
2000H
0000H
SFCF[1:0] = 00
Accessible
EA# = 1
8 KByte
8 KByte
Block 1
Block 1
Not
11
DFFFH
FFFFH
1FFFH
E000H
2000H
0000H
bank selection. Please refer to Figures 3-1 through 3-3 for
the program memory configuration. Program bank selec-
tion is described in the next section.
The 8K/16K/32K x8 primary SuperFlash block is organized
as 64/128/256 sectors, each sector consists of 128 Bytes.
The 8K x8 secondary SuperFlash block is organized as 64
sectors, each sector consists also of 128 Bytes.
For both blocks, the 7 least significant program address bits
select the byte within the sector. The remainder of the pro-
gram address bits select the sector within the block.
SFCF[1:0] = 01
Accessible
EA# = 1
8 KByte
8 KByte
Block 1
Block 0
Not
FFFFH
1FFFH
2000H
0000H
SFCF[1:0] = 10, 11
Accessible
EA# = 1
8 KByte
Block 0
S71255-05-000
Not
1255 F01.1
Data Sheet
5/06