P87C51MC2BA/02-S NXP Semiconductors, P87C51MC2BA/02-S Datasheet - Page 23

• Manufacturer Part Number: P87C51MC2BA/02-S
• Description: MCU 8-Bit 87C 80C51 CISC 96KB EPROM 3.3V/5V 44-Pin PLCC Tray
• Manufacturer: NXP Semiconductors

Specifications of P87C51MC2BA/02-S

• Package: 44PLCC
• Device Core: 80C51
• Family Name: 87C
• Maximum Speed: 24 MHz
• Ram Size: 3 KB
• Program Memory Size: 96 KB
• Operating Supply Voltage: 3.3|5 V
• Data Bus Width: 8 Bit
• Program Memory Type: EPROM
• Number Of Programmable I/os: 34
• Interface Type: SPI/UART
• Operating Temperature: 0 to 70 °C
• Number Of Timers: 3

Philips Semiconductors
9397 750 12302
Product data
11.1 Explanation of 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
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
AVLL
LLPL
— Time for address valid to ALE LOW
— Time for ALE LOW to PSEN LOW
Rev. 03 — 13 November 2003
P87C51MB2/P87C51MC2
80C51 8-bit microcontroller family
© Koninklijke Philips Electronics N.V. 2003. All rights reserved.
23 of 36