Rainbow Electronics DS89C450 - Manual (Page 18)

DS89C430/DS89C440/DS89C450 Ultra-High-Speed Flash Microcontrollers
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Table 2. SFR Reset Value
REGISTER ADDRESS BIT 7 BIT 6 BIT 5 BIT 4 BIT 3 BIT 2 BIT 1 BIT 0
P0 80h 1 1 1 1 1 1 1 1
SP 81h 0 0 0 0 0 1 1 1
DPL 82h 0 0 0 0 0 0 0 0
DPH 83h 0 0 0 0 0 0 0 0
DPL1 84h 0 0 0 0 0 0 0 0
DPH1 85h 0 0 0 0 0 0 0 0
DPS 86h 0 0 0 0 0 1 0 0
PCON 87h 0 0 Special Special 0 0 0 0
TCON 88h 0 0 0 0 0 0 0 0
TMOD 89h 0 0 0 0 0 0 0 0
TL0 8Ah 0 0 0 0 0 0 0 0
TL1 8Bh 0 0 0 0 0 0 0 0
TH0 8Ch 0 0 0 0 0 0 0 0
TH1 8Dh 0 0 0 0 0 0 0 0
CKCON 8Eh 0 0 0 0 0 0 0 1
P1 90h 1 1 1 1 1 1 1 1
EXIF 91h 0 0 0 0 Special Special Special 0
CKMOD 96h 1 1 0 0 0 1 1 1
SCON0 98h 0 0 0 0 0 0 0 0
SBUF0 99h 0 0 0 0 0 0 0 0
ACON 9Dh 0 0 0 1 1 1 1 1
P2 A0h 1 1 1 1 1 1 1 1
IE A8h 0 0 0 0 0 0 0 0
SADDR0 A9h 0 0 0 0 0 0 0 0
SADDR1 AAh 0 0 0 0 0 0 0 0
P3 B0h 1 1 1 1 1 1 1 1
IP1 B1h 1 0 0 0 0 0 0 0
IP0 B8h 1 0 0 0 0 0 0 0
SADEN0 B9h 0 0 0 0 0 0 0 0
SADEN1 BAh 0 0 0 0 0 0 0 0
SCON1 C0h 0 0 0 0 0 0 0 0
SBUF1 C1h 0 0 0 0 0 0 0 0
ROMSIZE C2h 1 1 1 1 0 1 0 1
PMR C4h 1 0 0 0 0 0 0 0
STATUS C5h 0 0 0 1 0 0 0 0
TA C7h 1 1 1 1 1 1 1 1
T2CON C8h 0 0 0 0 0 0 0 0
T2MOD C9h 1 1 1 1 1 1 0 0
RCAP2L CAh 0 0 0 0 0 0 0 0
RCAP2H CBh 0 0 0 0 0 0 0 0