
1997 Dec 15
18
Philips Semiconductors
Product specication
8-bit microcontrollers
P83C524; P80C528; P83C528
Fig.10 External program memory execution (continued).
a. With a MOVX to the External Data Memory (read).
b. With a MOVX to the External Data Memory (write).
handbook, full pagewidth
S1
S2
S3
S4
S5
S6
S1
S2
S3
S4
S5
S6
ALE
PSEN
RD
WR
P0
P2
PCH OUT
cycle 1
cycle 2
PCH OUT
DPH OUT
PCH OUT
PCL
OUT
INST
IN
DPL
OUT
INST
IN
PCL
OUT
MBC464
DATA OUT
handbook, full pagewidth
S1
S2
S3
S4
S5
S6
S1
S2
S3
S4
S5
S6
ALE
PSEN
RD
WR
P0
P2
PCH OUT
cycle 1
cycle 2
PCH OUT
DPH OUT
PCH OUT
PCL
OUT
INST
IN
DPL
OUT
INST
IN
PCL
OUT
MBC463
DATA
IN