P80C552IBA NXP Semiconductors, P80C552IBA Datasheet - Page 16

• Manufacturer Part Number: P80C552IBA
• Description: MCU 8-Bit 80C 80C51 CISC ROMLess 5V 68-Pin PLCC Tube
• Manufacturer: NXP Semiconductors

Specifications of P80C552IBA

• Package: 68PLCC
• Device Core: 80C51
• Family Name: 80C
• Maximum Speed: 24 MHz
• Ram Size: 256 Byte
• Operating Supply Voltage: 5 V
• Data Bus Width: 8 Bit
• Program Memory Type: ROMLess
• Number Of Programmable I/os: 40
• Interface Type: I2C/UART
• On-chip Adc: 8-chx10-bit
• Operating Temperature: 0 to 70 °C
• Number Of Timers: 3

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
P – PSEN
2002 Sep 03
PORT 0
PORT 2
Single-chip 8-bit microcontroller with 10-bit A/D,
capture/compare timer, high-speed outputs, PWM
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
t
LLAX
A0–A7
t
Figure 2. External Program Memory Read Cycle
t
P2.0–P2.7 OR A8–A15 FROM DPH
AVDV
RLAZ
t
Figure 3. External Data Memory Read Cycle
LLDV
t
LLPL
t
AVIV
t
LLIV
t
RLDV
A8–A15
t
PLAZ
t
RLRH
t
t
t
PLIV
PXIX
PLPH
INSTR IN
16
t
RHDX
DATA IN
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
WHLH
AVLL
LLPL
= Time for address valid to
= Time for ALE low to
PSEN low.
ALE low.
A0–A7
A0–A7 FROM PCL
A8–A15 FROM PCH
A8–A15
80C552/83C552
SU01694
SU01695
INSTR IN
Product data