TP80C31BH Intel Corporation, TP80C31BH Datasheet
TP80C31BH
Available stocks
Related parts for TP80C31BH
TP80C31BH Summary of contents
Page 1
... 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 INTEL CORPORATION 1995 MCS 51 Automotive ...
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 ...
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
EPROM CHARACTERISTICS (EPROM Only) The 87C51 is programmed by a modified Quick- Pulse Programming algorithm It differs from older methods in the value used for V PP Supply Voltage) and in the width and number of the ALE PROG pulses ...
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
Program Verification (EPROM Only) If Lock Bit 2 has not been programmed the on-chip Program Memory can be read out for program verifi- cation The address of the Program Memory location to be read is applied to Ports 1 and ...
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’’ ...