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P87C51MB2/P87C51MC2
General 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)
Products/packages
| Type number | North American Type number | Ordering code (12NC) | Product status | Package | Packing | Marking | Chemical content | Leadfree conversion date |
|---|---|---|---|---|---|---|---|---|
| P87C51MB2BA/02 | P87C51MB2BA/02-S | 9352 738 76529 | Volume production | SOT187-2
(PLCC44) | P87C51MB2BA/02
| week 41, 2004 | ||
| P87C51MC2BA/02 | P87C51MC2BA/02-S | 9352 732 19529 | Volume production | SOT187-2
(PLCC44) | P87C51MC2BA/02
| week 41, 2004 |
Pricing/ordering/availability
| Type number | Ordering code(12NC) | Indicative price/unit($) | Region | Distributor | In stock | Inventory date | Buy online | Samples |
|---|---|---|---|---|---|---|---|---|
| P87C51MB2BA/02 | 9352 738 76529 | 6.1200 | NA | DIGI-KEY CORPORATION | 789 | 6/29/2008 | Buy online | Order samples |
| NA | MOUSER ELECTRONICS | 129 | 7/6/2008 | Buy online | ||||
| P87C51MC2BA/02 | 9352 732 19529 | 6.7100 | NA | FUTURE ELECTRONICS | 1,366 | 7/4/2008 | Buy online | Order samples |
| NA | DIGI-KEY CORPORATION | 181 | 6/29/2008 | Buy online | ||||
| NA | MOUSER ELECTRONICS | 156 | 7/6/2008 | Buy online | ||||
| NA | ARROW ELECTRONICS | 19 | 7/4/2008 | Buy online |
Applications
Related applications
Digital media adapters
LCD display - discretes focus
PDA - discretes focus
HID
Projector
Intelligent washing machine
Transceiver board
Power amplifier board
Main CPU board
Walkie-talkie - MMS functionality
LCD TV - MMS functionality
Color mixing for RGBA LEDs
Technical documents
Application Notes
AN10289_1;
LPC900 external crystal start-up (27-Apr-04)
Support Documents
UM_P89C669_1;
80C51 8-bit microcontroller family with extended memory 96 kB FLASH with 2 kB RAM (2003-06-17)
index;
Development Tools for P87C51Mx2 devices (2003-12-15)
philips_i2c_logic_overview;
Interface Products Business Line Specialty Logic Product Line I2C Logic Family Overview (2004-01-01)
li_ion_battery_charger;
Li-ion Battery charger (17-Dec-04)
P87C51Mx2_02_1;
P87C51Mx2 Errata Sheet (2003-06-17)
75011294;
P87C51Mx2 Leaflet (2003-04-04)
UM_P87C51MX2_1;
P87C51Mx2 User Manual (2003-05-13)
UM_P89C669_3;
P89C669 User Manual (2003-09-16)
75012668;
Philips Microcontroller Line Card (2004-02-24)
75013987;
Philips The Innovation Leader in Microcontrollers LPC2000/LPC900/LPC700 Series and 80C51 Family (2005-01-21)
75016051;
The choice for embedded technologies (2007-07-01)
75015572;
The innovation leader in microcontrollers (2006-09-01)
UM10113_1;
User manual for the PNX2015 family (2005-05-06)
Parametrics/similar products
| Type number | Package | Power supply | RAM(bytes) | System Freq(MHz) | SPECIAL FEATURES | FUNCTION | ADCs | Watchdog timer | I/O pins | Operating temp.(Cel) | Timers | PWMs | Memory Type | Serial Interfaces | External Interrupt | Program Security | Series | No. of Pins | Clock Type | Memory Size(kBits) | Operating Frequency(MHz) | Reset Active Low or High |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| P87C51MB2BA/02 | SOT187-2
(PLCC44) | 2.7~5.5 | 2048 |
0~12@3V 0~24@5V | Extended Addressing Capabilities | 8-bit 80C51 uController | - | yes | 34 | 0~70 | 4 x 16-bit | 5-ch PCA | OTP | 2 UARTs, SPI | 2 | yes | 51MX based (80C51) | 44 | 6-clk | 64KB | 0~24 | High |
| P87C51MC2BA/02 | SOT187-2
(PLCC44) | 2.7~5.5 | 3072 |
0~12@3V 0~24@5V | Extended Addressing Capabilities | 8-bit 80C51 uController | - | yes | 34 | 0~70 | 4 x 16-bit | 5-ch PCA | OTP | 2 UARTs, SPI | 2 | yes | 51MX-based (80C51) | 44 | 6-clk | 96KB | 0~24 | High |
Similar products
P87C51MB2/P87C51MC2 links to the similar products page containing an overview of products that are similar in function or related to the type number(s) as listed on this page. The similar products page includes products from the same catalog tree(s), relevant selection guides and products from the same functional category.
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