83C576 Datasheet, PDF (35/46 Pages) NXP Semiconductors – 80C51 8-bit microcontroller family 8K/256 OTP/ROM, 6 channel 10-bit A/D, 4 comparators, failure detect circuitry, watchdog timer

Philips Semiconductors
80C51 8-bit microcontroller family
8K/256 OTP/ROM, 6 channel 10-bit A/D, 4 comparators,
failure detect circuitry, watchdog timer
Product specification
83C576/87C576
ALE
PSEN
RD
PORT 0
PORT 2
ALE
PSEN
WR
PORT 0
PORT 2
t_WHLH
t_LLDV
t_LLWL
t_RLRH
t_AVLL
t_LLAX
A0–A7
FROM RI OR DPL
t_RLAZ
t_RLDV
t_RHDX
DATA IN
t_AVWL
t_AVDV
P2.0–P2.7 OR A8–A15 FROM DPF
t_RHDZ
A0–A7 FROM PCL
A0–A15 FROM PCH
Figure 26. External Data Memory Read Cycle
t_WHLH
t_LLWL
t_WLWH
t_AVLL
t_LLAX
A0–A7
FROM RI OR DPL
t_AVWL
t_QVWX
DATA OUT
P2.0–P2.7 OR A8–A15 FROM DPF
t_WHQX
A0–A7 FROM PCL
A0–A15 FROM PCH
Figure 27. External Data Memory Write Cycle
INSTR IN
SU00025
INSTR IN
SU00069
1998 Jun 04
35