P87C51MB2_MC2

80C51 8-bit microcontroller family with extended memory; 64 kB/96 kB OTP with 2 kB/3 kB RAM


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Product description

The P87C51Mx2 represents the first microcontroller based on Philips Semiconductors? new 51MX core. The P87C51MC2 features 96 kbytes of OTP program memory and 3 kbytes of data SRAM, while the P87C51MB2 has 64 kbytes of OTP and 2 kbytes of RAM. In addition, both devices are equipped with a Programmable Counter Array (PCA), a watchdog timer that can be configured to different time ranges through SFR bits, as well as two enhanced UARTs and Serial Peripheral Interface (SPI).

Philips Semiconductors? 51MX (Memory eXtension) core is an accelerated 80C51 architecture that executes instructions at twice the rate of standard 80C51 devices. The linear address range of the 51MX has been expanded to support up to 8 Mbytes of program memory and 8 Mbytes of data memory. It retains full program code compatibility to enable design engineers to re-use 80C51 development tools, eliminating the need to move to a new, unfamiliar architecture. The 51MX core also retains 80C51 bus compatibility to allow for the continued use of 80C51-interfaced peripherals and Application Specific Integrated Circuits (ASICs).

The P87C51Mx2 provides greater functionality, increased performance and overall lower system cost. By offering an embedded memory solution combined with the enhancements to manage the memory extension, the P87C51Mx2 eliminates the need for software work-around. The increased program memory enables design engineers to develop more complex programs in a high-level language like C, for example, without struggling to contain the program within the traditional 64 kbytes of program memory. These enhancements also greatly improve C Language efficiency for code size below 64 kbytes.

The 51MX core is described in more detail in the 51MX Architecture Reference.

Features

Key features

  • Extended features of the 51MX Core:
    • 23-bit program memory space and 23-bit data memory space
    • Linear program and data address range expanded to support up to 8 Mbytes each
    • Program counter expanded to 23 bits
    • Stack pointer extended to 16 bits enabling stack space beyond the 80C51 limitation
    • New 23-bit extended data pointer and two 24-bit universal pointers greatly improve C compiler code efficiency in using pointers to access variables in different spaces
  • 100pct. binary compatibility with the classic 80C51 so that existing code is completely reusable
  • Up to 24 MHz CPU clock with 6 clock cycles per machine cycle
  • 96 kbytes (MC2) or 64 kbytes (MB2) of on-chip OTP
  • 3 kbytes (MC2) or 2 kbytes (MB2) of on-chip RAM
  • Programmable Counter Array (PCA)
  • Two full-duplex enhanced UARTs and Serial Peripheral Interface (SPI) communication modules

Key benefits

  • Increases program/data address range to 8 Mbytes each
  • Enhances performance and efficiency for C programs
  • Fully 80C51-compatible microcontroller
  • Provides seamless and compelling upgrade path from classic 80C51
  • Preserves 80C51 code base, investment/knowledge, and peripherals and ASICs
  • Supported by wide range of 80C51 development systems and programming tools vendors
  • The P87C51Mx2 makes it possible to develop applications at lower cost and with a reduced time-to-market

Complete features

  • Fully static
  • Up to 24 MHz CPU clock with 6 clock cycles per machine cycle
  • 96 kbytes or 64 kbytes of on-chip OTP
  • 3 kbytes or 2 kbytes of on-chip RAM
  • 23-bit program memory space and 23-bit data memory space
  • Four-level interrupt priority
  • 34 I/O lines (5 ports)
  • Three Timers: Timer0, Timer1 and Timer2
  • Two full-duplex enhanced UARTs with baud rate generator
  • Framing error detection
  • Automatic address recognition
  • Supports industry-standard Serial Peripheral Interface (SPI) with a baud rate up to 6 Mbits/s
  • Power control modes
  • Clock can be stopped and resumed
  • Idle mode
  • Power down mode with advanced clock control
  • Second DPTR register
  • Asynchronous port reset
  • Programmable Counter Array (PCA) (compatible with 8xC51Rx+) with five Capture/Compare modules
  • Low EMI (inhibit ALE)
  • Watchdog timer with programmable prescaler for different time ranges (compatible with 8xC66x with added prescaler)
All information on this product information page is subject to the subsequent disclaimers:
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Show functional diagram

Block diagram: P87C51MB2BA, P87C51MC2BA
Block diagram: P87C51MB2BA, P87C51MC2BA

Products / Packages

Type numberOrderable part numberOrdering code (12NC)Product statusPackagePackingMarkingECCN
P87C51MB2BA/02P87C51MB2BA/02,5299352 738 76529Volume productionSOT187-2
(PLCC44) 		Standard Marking
P87C51MC2BA/02P87C51MC2BA/02,5299352 732 19529Volume productionSOT187Standard Marking

The variants in the table below are discontinued. See the table Discontinuation information at the bottom of this page for more information.

Type numberOrderable part numberOrdering code (12NC)Product statusPackagePackingMarkingECCN
P87C51MC2BA/01-9352 710 00512Withdrawn
Replacement product		SOT187Tube Dry PackStandard Marking

Discontinuation information

Type numberOrdering code (12NC)Last-time buy dateLast-time delivery dateReplacement productDN NoticeStatusComments
P87C51MC2BA/0193527100051231-Mar-0430-Jun-04P87C51MC2BA/02DN 49
  • Sole source product
  • Type number fully withdrawn
  • Standard availability
Standard Discontinuation. See Replacement.

Parametrics of this product

Type numberPackagefmax
(MHz)		RAM
(B)		I/O
pins		UART
SPI
Timers
PWM
package reference code@ temperature
range
@ VDD
[min](V)		@ VDD
[max]
(V)		@ product description
P87C51MB2BASOT187-2
(PLCC44)		24.02048.034.02.01.02.01.0PLCC44B2.75.580C51 8-bit microcontroller family with extended memory; 64 kB OTP with 2 kB RAM
P87C51MC2BASOT187
24.03072.034.02.01.02.01.0PLCC44B2.75.580C51 8-bit microcontroller family with extended memory; 96 kB OTP with 3 kB RAM

Similar products

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHSLeadfree conversion dateRHFIFR (FIT)MTBF (hours)MSLMSL LF
P87C51MB2BA/02P87C51MB2BA/02,529P87C51MB2BA/02week 41, 20042.842.5839793281653747E833
P87C51MC2BA/02P87C51MC2BA/02,529P87C51MC2BA/02week 41, 20042.842.5839793281653747E833

The variants in the table below are discontinued. See the table Discontinuation information at the bottom of this page for more information.

Type numberOrderable part numberChemical contentRoHSLeadfree conversion dateRHFIFR (FIT)MTBF (hours)MSLMSL LF
P87C51MC2BA/01-
Quality and reliability disclaimer

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Discontinuation information

Type numberOrdering code (12NC)Last-time buy dateLast-time delivery dateReplacement productDN NoticeStatusComments
P87C51MC2BA/0193527100051231-Mar-0430-Jun-04P87C51MC2BA/02DN 49
  • Sole source product
  • Type number fully withdrawn
  • Standard availability
Standard Discontinuation. See Replacement.

Documentation for this product

TypeFormatTitleDate
Data sheetpdf80C51 8-bit microcontroller family with extended memory; 64 kB/96 kB OTP with 2 kB/3 kB RAM (v.3.0)2003-11-13
Errata sheetpdfP87C51Mx2 Errata Sheet (v.1.1)2003-06-17
User manualpdfP87C51Mx2 User Manual (v.1.0)2003-05-13

Ordering & availability

Type numberOrdering code(12NC)Orderable part numberRegionDistributorIn stockOrder quantityInventory dateBuy onlineSamples
P87C51MB2BA/029352 738 76529P87C51MB2BA/02,529NADIGI-KEY CORPORATION2,0132/10/2012Buy onlinenot available
   NAMOUSER ELECTRONICS2372/10/2012Buy online 
   NAMOUSER ELECTRONICS2372/10/2012Buy online 
   NAAVNET ELECTRONICS MARKETING1122/10/2012Buy online 
   NAFUTURE ELECTRONICS102/6/2012Buy online 
   JAPANCHIP ONE STOPyes02/10/2012Buy online 
P87C51MC2BA/029352 732 19529P87C51MC2BA/02,529NAAVNET ELECTRONICS MARKETING9332/10/2012Buy onlinenot available
   NADIGI-KEY CORPORATION6222/10/2012Buy online 
   EUARROW EUROPE262/3/2012Buy online 
   NAMOUSER ELECTRONICS162/10/2012Buy online 
   NAMOUSER ELECTRONICS162/10/2012Buy online 
   JAPANCHIP ONE STOPno02/10/2012Buy online 

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