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N80C31BH Dataheets PDF



Part Number N80C31BH
Manufacturers Intel Corporation
Logo Intel Corporation
Description CHMOS SINGLE-CHIP 8-BIT MICROCONTROLLER
Datasheet N80C31BH DatasheetN80C31BH Datasheet (PDF)

80C31BH 80C51BH 87C51 MCS 51 CHMOS SINGLE-CHIP 8-BIT MICROCONTROLLER Automotive Y Extended Automotive Temperature Range ( b 40 C to a 125 C Ambient) 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 Y Y Programmable Serial Port TTL- and CMOS-Compatible Logic Levels 64K External Program Memory Space .

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80C31BH 80C51BH 87C51 MCS 51 CHMOS SINGLE-CHIP 8-BIT MICROCONTROLLER Automotive Y Extended Automotive Temperature Range ( b 40 C to a 125 C Ambient) 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 Y Y 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 231369) Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y The MCS 51 CHMOS microcontroller products are fabricated on Intel’s reliable CHMOS process and are 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 combination 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 NOTICE 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 Other brands and names are the property of their respective owners 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 INTEL CORPORATION 1995 January 1995 Order Number 270419-007 AUTOMOTIVE 80C31BH 80C51BH 87C51 270419 – 1 Figure 1 MCS 51 Microcontroller Architectural Block Diagram 2 AUTOMOTIVE 80C31BH 80C51BH 87C51 automotive temperature range option operational characteristics are guaranteed over the temperature range of b 40 C to a 125 C ambient The automotive and extended temperature versions of the MCS 51 microcontroller product families are available with or without burn-in options as listed in Table 1 As shown in Figure 2 temperature burn-in and package options are identified by a one- or two-letter prefix to the part number 80C31BH 80C51BH 87C51 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 operational characteristics are guaranteed over the temperature range of b 40 C to a 85 C ambient For the 270419 – 2 Example AN80C51 indicates an automotive temperature range version of the 80C51 in a PLCC package with 4 Kbyte ROM program memory Figure 2 MCS 51 Microcontroller Product Family Nomenclature Table 1 Temperature Options Temperature Classification Extended Automotive Temperature Designation T L A B Operating Temperature C Ambient b 40 to a 85 b 40 to a 85 b 40 to a 125 b 40 to a 125 Burn-In Options Standard Extended Standard Extended 3 AUTOMOTIVE 80C31BH 80C51BH 87C51 Diagrams are for pin reference only Package sizes are not to scale 270419 – 3 Pin (PDIP) EPROM only Do not connect reserved pins 270419 – 4 Pad (PLCC) Figure 3 Pin Connections PIN DESCRIPTION VCC Supply voltage during normal Idle and Power Down operations VSS Circuit ground VSS1 VSS1 (EPROM PLCC only) secondary ground Provided to reduce ground bounce and improve power supply bypassing NOTE This pin is not a substitute for the VSS pin (pin 22) For ROM and ROMless pin 1 is reserve.


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