SST89V54RD2 Silicon Storage Technology, Inc., SST89V54RD2 Datasheet - Page 16

• Manufacturer Part Number: SST89V54RD2
• Description: Flashflex51 Mcu
• Manufacturer: Silicon Storage Technology, Inc.

Data Sheet
TABLE
©2007 Silicon Storage Technology, Inc.
Symbol Description
ACC
B
PSW
SP
DPL
DPH
IE
IEA
IP
IPH
IP1
IP1H
PCON
AUXR
AUXR1
XICON
1
1
1
1. Bit Addressable SFRs
2. X = Don’t care
1
1
1
1
2
Accumulator
B Register
Program Status
Word
Stack Pointer
Data Pointer
Low
Data Pointer
High
Interrupt Enable
Interrupt
Enable A
Interrupt Priority
Reg
Interrupt Priority
Reg High
Interrupt Priority
Reg A
Interrupt Priority
Reg A High
Power Control
Auxiliary Reg
Auxiliary Reg 1
External
Interrupt Control
3-5: CPU related SFRs
Address
Direct
AEH
E0H
F0H
D0H
A8H
E8H
B8H
B7H
F8H
F7H
8EH
A2H
81H
82H
83H
87H
SMOD1 SMOD0
MSB
CY
EA
X
-
-
-
-
-
-
-
Bit Address, Symbol, or Alternative Port Function
PPCH
PPC
EX3
AC
EC
-
-
-
-
-
PT2H PSH
BOF
16
ET2
PT2
IE3
F0
-
-
-
-
-
SST89V54RD2/RD / SST89V58RD2/RD
POF
RS1
IT3
ES
PS
-
-
-
-
-
ACC[7:0]
DPH[7:0]
DPL[7:0]
SP[7:0]
B[7:0]
PBOH
PT1H
EBO
PBO
RS0
GF1
ET1
PT1
GF2
0
-
PX1H
PX3H
GF0
EX1
PX1
PX3
EX2
OV
0
-
-
EXTRAM
PT0H
ET0
PT0
PX2
PX3
IE2
PD
F1
-
-
FlashFlex MCU
PX0H
LSB
DPS
EX0
PX0
IDL
AO
IT2
S71255-10-000
P
-
-
-
xxxxxxx00b
00010000b
x0000000b
x0000000b
xxxx0xxxb
xxxx0xxxb
xxxx0xxxb
xxxx00x0b
Reset
Value
00H
00H
00H
07H
00H
00H
00H
00H
T3-5.0 1255
12/07