N80C31BH1 Intel Corporation, N80C31BH1 Datasheet

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N80C31BH1

Manufacturer Part Number
N80C31BH1
Description
PLCC44
Manufacturer
Intel Corporation
Datasheet

Specifications of N80C31BH1

Date_code
04+

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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)

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