80C451 Datasheet, PDF (15/22 Pages) NXP Semiconductors – 80C51 8-bit microcontroller family 4K/128 OTP/ROM/ROMless, expanded I/O

Philips Semiconductors
80C51 8-bit microcontroller family
4K/128 OTP/ROM/ROMless, expanded I/O
Product specification
80C451/83C451/87C451
OBF (AFLAG)
PE (BFLAG)
ODS
PORT 6
t_OVFV
t_OLOH
t_OLDV
t_FLDV
Figure 6. Port 6 Output
t_OVFV
t_OHDZ
ODS
SEL (AFLAG)
PORT 6
t_OHFH
t_FVDV
DATA
t_FVDV
CSR
DATA
Figure 7. Port 6 Select Mode
PE (BFLAG)
IDS
PORT 6
t_FLFH
t_ILIH
t_DVIH
t_IHDZ
Figure 8. Port 6 Input
IBF (BFLAG)
IDS
t_IVFV
t_IVFV
Figure 9. IBF Flag Output
1998 May 01
15
SU00088
SU00089
SU00090
SU00091A