P80C32EBBB PHILIPS [NXP Semiconductors], P80C32EBBB Datasheet - Page 17
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P80C32EBBB
Manufacturer Part Number
P80C32EBBB
Description
CMOS single-chip 8-bit microcontrollers
Manufacturer
PHILIPS [NXP Semiconductors]
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
P80C32EBBB
Manufacturer:
SANYO
Quantity:
1 005
Part Number:
P80C32EBBB
Manufacturer:
PHILIPS/飞利浦
Quantity:
20 000
Philips Semiconductors
EXPLANATION OF THE AC SYMBOLS
Each timing symbol has five characters. The first character is always
‘t’ (= time). The other characters, depending on their positions,
indicate the name of a signal or the logical status of that signal. The
designations are:
A – Address
C – Clock
D – Input data
H – Logic level high
I – Instruction (program memory contents)
L – Logic level low, or ALE
1996 Aug 16
PORT 0
PORT 2
CMOS single-chip 8-bit microcontrollers
PSEN
ALE
RD
PORT 0
PORT 2
PSEN
ALE
t
AVLL
FROM RI OR DPL
A0–A7
t
LLAX
t
t
AVWL
LHLL
t
t
LLWL
AVLL
A0–A7
Figure 5. External Program Memory Read Cycle
t
t
AVDV
P2.0–P2.7 OR A8–A15 FROM DPF
RLAZ
t
Figure 6. External Data Memory Read Cycle
LLDV
t
t
t
AVIV
LLAX
LLPL
t
LLIV
t
t
PLIV
RLDV
A0–A15
t
PLAZ
t
PLPH
t
RLRH
t
PXIX
INSTR IN
17
t
RHDX
DATA IN
P – PSEN
Q – Output data
R – RD signal
t – Time
V – Valid
W – WR signal
X – No longer a valid logic level
Z – Float
Examples: t
t
PXIZ
t
RHDZ
t
t
AVLL
WHLH
LLPL
= Time for ALE low to PSEN low.
= Time for address valid to ALE low.
A0–A7
A0–A7 FROM PCL
A0–A15 FROM PCH
A8–A15
80C32/87C52
Product specification
INSTR IN
SU00025
SU00006