P80C51BH Intel, P80C51BH Datasheet

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P80C51BH

Manufacturer Part Number
P80C51BH
Description
Manufacturer
Intel
Datasheet

Specifications of P80C51BH

Cpu Family
MCS51
Device Core Size
8b
Frequency (max)
16MHz
Program Memory Type
ROM
Program Memory Size
4KB
Total Internal Ram Size
128Byte
# I/os (max)
32
Number Of Timers - General Purpose
2
Operating Supply Voltage (typ)
5V
Operating Supply Voltage (max)
5.5V
Operating Supply Voltage (min)
4.5V
Instruction Set Architecture
CISC
Operating Temp Range
-40C to 125C
Operating Temperature Classification
Automotive
Mounting
Through Hole
Pin Count
40
Package Type
PDIP
Lead Free Status / Rohs Status
Not Compliant

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Y
Y
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The MCS
functionally compatible with the standard MCS 51 HMOS microcontroller products This technology combines
the high speed and density characteristics of HMOS with the low power attributes of CHMOS This combina-
tion expands the effectiveness of the powerful MCS 51 microcontroller architecture and instruction set
Like the MCS 51 HMOS microcontroller versions the MCS 51 CHMOS microcontroller products have the
following features 4 Kbytes of EPROM ROM (87C51 80C51BH respectively) 128 bytes of RAM 32 I O lines
two 16-bit timer counters a five-source two-level interrupt structure a full duplex serial port and on-chip
oscillator and clock circuitry In addition the MCS 51 CHMOS microcontroller products exhibit low operating
power along with two software selectable modes of reduced activity for further power reduction Idle and
Power Down
The Idle mode freezes the CPU while allowing the RAM timer counters serial port and interrupt system to
continue functioning The Power Down mode saves the RAM contents but freezes the oscillator causing all
other chip functions to be inoperative
The 87C51 is the EPROM version of the 80C51BH It contains 4 Kbytes of on-chip program memory that can
be electrically programmed and can be erased by exposure to ultraviolet light The 87C51 EPROM array uses
a modified Quick-Pulse Programming algorithm by which the entire 4 Kbyte array can be programmed in about
12 seconds
This datasheet contains information on products in full production Specifications within this datasheet
are subject to change without notice Verify with your local Intel sales office that you have the latest
datasheet before finalizing a design
Extended Automotive Temperature
Range (
High Performance CHMOS Process
Power Control Modes
4 Kbyte On-Chip ROM EPROM
128 x 8-bit RAM
32 Programmable I O Lines
Two 16-Bit Timer Counters
5 Interrupt Sources
Quick-Pulse EPROM Programming
2-Level Program Memory Lock EPROM
Boolean Processor
Information in this document is provided in connection with Intel products Intel assumes no liability whatsoever including infringement of any patent or
copyright for sale and use of Intel products except as provided in Intel’s Terms and Conditions of Sale for such products Intel retains the right to make
changes to these specifications at any time without notice Microcomputer Products may have minor variations to this specification known as errata
COPYRIGHT
Other brands and names are the property of their respective owners
CHMOS SINGLE-CHIP 8-BIT MICROCONTROLLER
51 CHMOS microcontroller products are fabricated on Intel’s reliable CHMOS process and are
b
40 C to
INTEL CORPORATION 1995
a
125 C Ambient)
80C31BH 80C51BH 87C51
MCS 51
Automotive
NOTICE
January 1995
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Programmable Serial Port
TTL- and CMOS-Compatible Logic
Levels
64K External Program Memory Space
64K External Data Memory Space
IDLE and POWER DOWN Modes
ONCE Mode Facilitates System Testing
Available in 12 MHz and 16 MHz
Versions
Available in PLCC and DIP Packages
(See Packaging Specification Order
Order Number 270419-007
231369)

P80C51BH Summary of contents

Page 1

... Information in this document is provided in connection with Intel products Intel assumes no liability whatsoever including infringement of any patent or copyright for sale and use of Intel products except as provided in Intel’s Terms and Conditions of Sale for such products Intel retains the right to make changes to these specifications at any time without notice Microcomputer Products may have minor variations to this specification known as errata ...

Page 2

AUTOMOTIVE 80C31BH 80C51BH 87C51 Figure 1 MCS 51 Microcontroller Architectural Block Diagram 2 270419 – 1 ...

Page 3

... PRODUCT OPTIONS Intel’s extended and automotive temperature range products are designed to meet the needs of those applications whose operating requirements exceed commercial standards With the extended temperature range option opera- tional characteristics are guaranteed over the tem- perature range of ...

Page 4

AUTOMOTIVE 80C31BH 80C51BH 87C51 Diagrams are for pin reference only Package sizes are not to scale Pin (PDIP) EPROM only Do not connect reserved pins PIN DESCRIPTION V Supply voltage during normal Idle and Power CC Down operations V Circuit ...

Page 5

Port 3 also serves the functions of various special features of the MCS 51 microcontroller family as listed below Pin Name Alternate Function P3 0 RXD Serial Input Line P3 1 TXD Serial Output Line P3 2 INT0 External Interrupt ...

Page 6

AUTOMOTIVE 80C31BH 80C51BH 87C51 Table 2 Status of the External Pins During Idle and Power Down Program Mode ALE Memory Idle Internal 1 Idle External 1 Power Down Internal 0 Power Down External 0 NOTE For more detailed information on ...

Page 7

PROGRAM MEMORY LOCK (EPROM Only) The 87C51 contains two program memory lock schemes Encrypted Verify and Lock Bits Encrypted Verify The 87C51 implements a 32- byte EPROM array that can be programmed by the customer and which can then be ...

Page 8

AUTOMOTIVE 80C31BH 80C51BH 87C51 ABSOLUTE MAXIMUM RATINGS Ambient Temperature Under Bias Storage Temperature Voltage Pin Voltage on Any Other Pin ...

Page 9

NOTES (Continued) 4 Pins of Ports 1 2 and 3 source a transition current when they are being externally driven from The transition current reaches its maximum value when V 5 ICCMAX at other frequencies is given ...

Page 10

AUTOMOTIVE 80C31BH 80C51BH 87C51 EXPLANATION OF THE AC SYMBOLS Each timing symbol has 5 characters The first char- acter is always a ‘T’ (stands for time) The other characters depending on their positions stand for the name of a signal ...

Page 11

EXTERNAL PROGRAM MEMORY READ CYCLE EXTERNAL DATA MEMORY READ CYCLE EXTERNAL DATA MEMORY WRITE CYCLE AUTOMOTIVE 80C31BH 80C51BH 87C51 270419 –12 270419 –13 270419 –14 11 ...

Page 12

AUTOMOTIVE 80C31BH 80C51BH 87C51 EXTERNAL CLOCK DRIVE Symbol Parameter Min Max Units 1 T Oscillator Frequency 3 5 CLCL High Time 20 CHCX T Low Time 20 CLCX T Rise Time CLCH T Fall Time CHCL SERIAL ...

Page 13

... Figure 11 Programming Configuration AUTOMOTIVE 80C31BH 80C51BH 87C51 to identify the device The signature bytes identify the device as an 87C51 manufactured by Intel Table 3 shows the logic levels for reading the signa- ture byte and for programming the Program Memo- ry the Encryption Table and the Lock Bits The cir- ...

Page 14

AUTOMOTIVE 80C31BH 80C51BH 87C51 Quick-Pulse Programming (EPROM Only) The setup for Microcontroller Quick-Pulse Program- ming is shown in Figure 11 Note that the 87C51 is running with MHz oscillator The reason the oscillator needs to be ...

Page 15

... The signature bytes are read by the same procedure as a normal verification of locations 030H and 031H except that P3 6 and P3 7 need to be pulled to a logic low The values returned are (030H) 89H indicates manufactured by Intel e (031H) 57H indicates 87C51 e EPROM PROGRAMMING AND VERIFICATION CHARACTERISTICS ...

Page 16

AUTOMOTIVE 80C31BH 80C51BH 87C51 EPROM PROGRAMMING AND VERIFICATION WAVEFORMS FOR PROGRAMMING CONDITIONS SEE FIGURE 11 FOR VERIFICATION CONDITIONS SEE FIGURE 13 DATASHEET REVISION SUMMARY The following are the key differences between this datasheet and the -006 version 1 The ‘‘preliminary’’ ...

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