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NXP Semiconductors P89CV51RC2FA,512
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- Part No.:
- P89CV51RC2FA,512
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 44-LCC (J-Lead)
- Datasheet:
-
P89CV51RC2FA,512.pdf
- Description:
- IC MCU 8BIT 32KB FLASH 44PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:4,603
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Product details
Overview
P89CV51RC2FA,512 from NXP Semiconductors is an 8-bit 80C51 microcontroller with 32 kB on-chip flash code memory, 1 kB data RAM, SPI interface, and programmable 6/12-clock CPU mode. It operates from 0 MHz to 40 MHz in 12× mode and supports In-Application Programming (IAP) with 128-byte page erase for non-volatile data storage in industrial control systems.
For engineers reviewing the P89CV51RC2FA,512 datasheet, P89CV51RC2FA,512 pinout, P89CV51RC2FA,512 application, or P89CV51RC2FA,512 equivalent, key selection criteria include flash size (32 kB), RAM capacity (1 kB), PLCC44 package compatibility, SPI peripheral integration, and IAP-enabled firmware update capability in resource-constrained embedded designs.
Technical Context
The P89CV51RC2FA,512 implements a high-performance 80C51 core with dual data pointers (DPTR0/DPTR1), PCA module supporting PWM and capture/compare functions across five channels, and three 16-bit timers/counters. Its memory architecture includes 1 kB internal RAM (expandable via EXTRAM bit), 768 B on-chip XDATA, and 32 kB flash organized in 128-B erasable pages.
It features enhanced peripherals versus legacy 8051 variants: SPI interface (MOSI/MISO/SPICLK/SS on Port 1), second DPTR register, watchdog timer, and low-EMI ALE inhibit mode. The device supports both ISP and IAP using identical LOW-state routines, enabling field firmware updates without external programming hardware.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 80C51 8-bit CPU with 6/12-clock mode selectable via SFR bit |
| Flash Memory | 32 kB on-chip flash with 128-B page erase (30 ms/page); enables efficient non-volatile data storage within code space |
| Data RAM | 1 kB internal RAM including 768 B XDATA; accessible via MOVX with EXTRAM bit control |
| Operating Frequency | 0–40 MHz in 12× mode; 0–20 MHz in 6× mode; supports high-speed timing-critical applications |
| Peripherals | SPI interface, enhanced UART, PCA with 5 capture/compare channels, 3 × 16-bit timers, WDT, 4 × 8-bit I/O ports |
| Interrupt System | 10 interrupt sources (including INT0/INT1/T0/T1/RXD/TXD/PCA/Timer2/WR/RD) with 4 priority levels |
| Package | PLCC44 (SOT187-2); 44-pin plastic leaded chip carrier with standard footprint for socket-based prototyping |
Pinout & Package
Package: PLCC44 (SOT187-2), 44-lead plastic leaded chip carrier, body size 16.5 × 16.5 × 4.0 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0[0]–P0[7] | Port 0 bidirectional I/O / AD0–AD7 | Multiplexed address/data bus for external memory access; open-drain with internal pull-ups; requires external pull-ups for general-purpose I/O |
| P1[0]/T2 | Port 1 bit 0 / Timer2 input/output | External count input or clock-out for Timer2; supports high-current drive (16 mA) when used as output |
| P1[4]/CEX1/SS | Port 1 bit 4 / PCA channel 1 / SPI slave select | Configurable as PCA capture/compare I/O or SPI SS signal; enables concurrent peripheral use with software routing |
| P1[5]/CEX2/MOSI | Port 1 bit 5 / PCA channel 2 / SPI master out | Dual-function pin supporting SPI data transmission and PCA event capture; eliminates need for external signal routing |
| RST | Reset input | Active-HIGH reset requiring ≥2 machine cycles; initiates boot sequence from 0000H or boot vector based on status bit |
| EA | External Access Enable | Strap HIGH for internal code execution; LOW enables external program memory fetch; critical for memory mapping decisions |
| XTAL1/XTAL2 | Oscillator input/output | Supports crystal (0–40 MHz) or resonator; internal oscillator circuit eliminates external clock source requirement |
Key Features
| Feature | Design Value |
|---|---|
| 128-B flash page erase | Enables reliable firmware updates and non-volatile parameter storage without full chip erase; 30 ms/page reduces downtime during field upgrades |
| Dual data pointers (DPTR0/DPTR1) | Accelerates memory-to-memory transfers and buffer management in communication stacks; toggled via single INC instruction on AUXR1 |
| SPI interface with dedicated pins | Offloads serial communication from UART; supports master/slave operation with hardware-controlled clock and data framing |
| Programmable 6/12-clock CPU mode | Reduces power consumption by 50% in 6-clock mode while maintaining peripheral timing compatibility via independent clock selection |
| PCA with 5-channel capture/compare | Provides precise PWM generation, pulse-width measurement, and frequency synthesis without CPU intervention |
Applications
| Industrial Motor Control | Smart Energy Metering |
|---|---|
Use Scenario: Closed-loop speed regulation of BLDC motors using feedback from Hall sensors and real-time PWM adjustment. IC Role / Device Role / Timing Role: Central controller executing PID algorithms, generating 3-phase PWM via PCA, and managing SPI-connected ADCs and EEPROM. Use Value: 32 kB flash stores motor profiles and calibration data; 128-B page erase allows over-the-air firmware patches without disrupting runtime operation. | Use Scenario: Multi-tariff electricity meter with tamper detection, pulse counting, and RS-485 communication. IC Role / Device Role / Timing Role: Primary MCU handling metrology calculations, secure data logging, and isolated serial interface via SPI-driven transceiver. Use Value: Dual DPTR enables simultaneous read/write to flash (firmware) and XRAM (metering logs); 1 kB RAM accommodates real-time accumulation buffers. |
| Embedded HMI Controller | Legacy System Retrofit |
Use Scenario: Touchscreen-based operator interface for PLCs with local graphics rendering and button debouncing. IC Role / Device Role / Timing Role: Interface processor managing SPI-connected display driver, UART debug port, and GPIO matrix keypad. Use Value: SPI peripheral eliminates bit-banged software drivers; 40 MHz operation ensures responsive UI updates even with complex state machines. | Use Scenario: Drop-in replacement for obsolete P89C51RC2 devices in existing industrial PCBs requiring no layout changes. IC Role / Device Role / Timing Role: Pin- and software-compatible upgrade adding SPI, larger RAM, and faster flash erase without modifying firmware or hardware. Use Value: Maintains legacy 8051 toolchain compatibility while enabling new features like secure bootloader and field-upgradable parameters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| P89LV51RD2FA | 3.3 V operation, 64 kB flash, same PLCC44 package; lacks SPI interface and 128-B page erase | Lower power consumption but no native SPI; requires external shift register for serial sensor interfaces | Select when voltage scaling is critical and SPI is not required; verify I/O voltage compatibility with existing peripherals |
| AT89C51ED2-RL24 | Atmel 8051 derivative with 12 kB flash, 1 kB RAM, SPI, and ISP; TQFP44 only, no PLCC44 option | Smaller flash capacity limits complex protocol stacks; different SFR map requires firmware porting effort | Choose for cost-sensitive designs where TQFP44 is acceptable and Atmel toolchain support is preferred |
Compared with P89LV51RD2FA and AT89C51ED2-RL24, the P89CV51RC2FA,512 uniquely balances 32 kB flash, SPI integration, PLCC44 availability, and 128-B IAP page erase-making it optimal for field-upgradable industrial controllers where pin compatibility and firmware flexibility are mandatory.
Availability
P89CV51RC2FA,512 is available at Aetrix Electronics and suitable for industrial motor control, smart energy metering, embedded HMI, and legacy system retrofit applications requiring stable component supply and long-term lifecycle support.
Supply support for P89CV51RC2FA,512 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
NXP Semiconductors is a global semiconductor company specializing in secure connectivity solutions for automotive, industrial, and IoT applications.
The P89CV51RC2FA,512 belongs to NXP's legacy 80C51 microcontroller family, designed specifically for cost-sensitive, reliability-critical industrial control systems requiring drop-in compatibility, robust flash programming, and extended temperature operation (−40 °C to +85 °C).
FAQ
What is the maximum operating frequency of the P89CV51RC2FA,512?
The P89CV51RC2FA,512 supports up to 40 MHz in 12-clock mode and 20 MHz in 6-clock mode. This frequency range is validated across the full industrial temperature range (−40 °C to +85 °C) and enables deterministic real-time response for time-critical control loops. The 6-clock mode halves instruction cycle time while maintaining peripheral timing integrity through independent clock configuration.
Does the P89CV51RC2FA,512 support In-Application Programming (IAP)?
Yes, the P89CV51RC2FA,512 supports IAP using 128-byte page erase operations executed from user code. IAP routines reside in the on-chip boot block and are callable via a common entry point, allowing firmware updates or parameter storage without halting system operation. Each 128-B page erase completes in ≤30 ms, enabling rapid field updates.
What package type is used for the P89CV51RC2FA,512?
The P89CV51RC2FA,512 uses a PLCC44 package (SOT187-2), a 44-pin plastic leaded chip carrier with J-leads. This package supports socket-based development and rework, provides mechanical stability in vibration-prone environments, and maintains pin compatibility with legacy P89C51RC2 designs for seamless board-level upgrades.
How does the SPI interface on the P89CV51RC2FA,512 differ from standard 8051 derivatives?
The P89CV51RC2FA,512 integrates a hardware SPI controller with dedicated MOSI, MISO, SPICLK, and SS pins mapped to Port 1. Unlike bit-banged implementations, this peripheral operates independently of the CPU, supports master/slave modes, and uses SFR registers (SPCR/SPSR/SPDAT) for configuration and status. It eliminates timing jitter and frees CPU cycles for application logic.
Can the P89CV51RC2FA,512 replace older P89C51RC2 devices without hardware changes?
Yes, the P89CV51RC2FA,512 is explicitly designed as a drop-in and software-compatible replacement for P89C51RC2 devices. It retains identical pinout, voltage ratings, and instruction set while adding SPI, larger RAM (1 kB vs. 512 B), and 128-B page erase. No PCB modifications or firmware recompilation are required-only minor linker script updates may be needed for expanded memory sections.
P89CV51RC2FA,512 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 44-LCC (J-Lead)
- Series:
- 89C
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- 8051
- Core Size:
- 8-Bit
- Speed:
- 40MHz
- Connectivity:
- EBI/EMI, SPI, UART/USART
- Peripherals:
- POR, PWM, WDT
- Number of I/O:
- 32
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 1K x 8
- Voltage - Supply (Vcc/Vdd):
- 4.5V ~ 5.5V
- Data Converters:
- -
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
P89CV51RC2FA,512 FAQ
1.How can I place an order for P89CV51RC2FA,512 through Aetrix?
Please submit a Request for Quotation (RFQ) for P89CV51RC2FA,512 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for P89CV51RC2FA,512 reliable?
The price and inventory of P89CV51RC2FA,512 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P89CV51RC2FA,512 is usually 5 days.
3.What payment methods are accepted for P89CV51RC2FA,512?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P89CV51RC2FA,512 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P89CV51RC2FA,512?
P89CV51RC2FA,512 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P89CV51RC2FA,512 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for P89CV51RC2FA,512?
For technical support, including P89CV51RC2FA,512 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P89CV51RC2FA,512 requirements.
6.How does Aetrix verify that P89CV51RC2FA,512 is sourced from the original manufacturer or authorized distributors?
All P89CV51RC2FA,512 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that P89CV51RC2FA,512 meets industry standards.
7.What is the process for return or replacement of P89CV51RC2FA,512?
All P89CV51RC2FA,512 units undergo pre-shipment inspection (PSI). If there is an issue with P89CV51RC2FA,512, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The P89CV51RC2FA,512 part is unused and in its original packaging.
Return procedure for P89CV51RC2FA,512:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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