FlashFlex51 MCU
SST89E52RD2 / SST89E54RD2 / SST89E58RD2 / SST89E516RD2
SST89V52RD2 / SST89V54RD2 / SST89V58RD2 / SST89V516RD2
Preliminary Specifications
TABLE
3-7: CPU RELATED SFRS
Bit Address, Symbol, or Alternative Port Function
Direct
Address
Reset
Value
Symbol Description
MSB
LSB
ACC1
B1
PSW1
Accumulator
B Register
E0H
F0H
D0H
ACC[7:0]
B[7:0]
00H
00H
00H
Program Status
Word
CY
AC
F0
RS1
RS0
OV
F1
P
SP
Stack Pointer
81H
82H
SP[7:0]
07H
00H
DPL
Data Pointer
Low
DPL[7:0]
DPH
Data Pointer
High
83H
DPH[7:0]
00H
IE1
IEA1
Interrupt Enable
A8H
E8H
EA
-
EC
-
ET2
-
ES
ET1
EX1
-
ET0
-
EX0
-
00H
Interrupt
Enable A
-
EBO
xxxx0xxxb
IP1
Interrupt Priority
Reg
B8H
B7H
F8H
F7H
-
-
-
-
PPC
PT2
PS
PT1
PX1
PT0
PX0 x0000000b
PX0H x0000000b
IPH
IP11
IP1H
Interrupt Priority
Reg High
PPCH PT2H PSH PT1H PX1H
PT0H
Interrupt Priority
Reg A
-
-
-
-
-
-
PBO
-
-
-
-
-
-
xxxx0xxxb
xxxx0xxxb
Interrupt Priority
Reg A High
PBOH
PCON
AUXR
Power Control
Auxiliary Reg
87H
8EH
A2H
AEH
SMOD1 SMOD0 BOF POF GF1
GF0
-
PD
IDL
AO
00010000b
xxxxxxx00b
-
-
-
-
-
-
-
-
-
GF2
0
EXTRAM
AUXR1 Auxiliary Reg 1
0
-
DPS xxxx00x0b
XICON External
Interrupt Control
0
EX3
IE3
IT3
EX2
IE2
IT2
00H
T3-7.0 1255
1. Bit Addressable SFRs
TABLE
3-8: FLASH MEMORY PROGRAMMING SFRS
Bit Address, Symbol, or Alternative Port Function
Direct
Address MSB
Reset
Value
Symbol Description
LSB
SFCF
SFCM
SFAL
SFAH
SFDT
SFST
SuperFlash
Configuration
B1H
B2H
B3H
B4H
B5H
B6H
-
IAPEN
-
-
-
-
SWR BSEL x0xxxx00b
SuperFlash
Command
FIE
FCM[6:0]
00H
SuperFlash
Address Low
SuperFlash Low Order Byte Address Register - A7 to A0 (SFAL)
SuperFlash High Order Byte Address Register - A15 to A8 (SFAH)
SuperFlash Data Register
00H
00H
00H
SuperFlash
Address High
SuperFlash
Data
SuperFlash
Status
SB1_i SB2_i SB3_i
-
EDC_i FLASH_BUSY
-
-
000x00xxb
T3-8.0 1255
©2004 Silicon Storage Technology, Inc.
S71255-00-000
3/04
18
SST [ SILICON STORAGE TECHNOLOGY, INC ]
