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NXP Semiconductors P87C554SFAA,512
- Part No.:
- P87C554SFAA,512
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 68-LCC (J-Lead)
- Datasheet:
-
P87C554SFAA,512.pdf
- Description:
- IC MCU 8BIT 16KB OTP 68PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:2,348
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Product details
Overview
P87C554SFAA,512 from NXP Semiconductors (formerly Philips) is an 80C51-based 8-bit microcontroller with 16 KB OTP program memory, 512-byte RAM, eight-channel 10-bit ADC, I²C serial interface, dual PWM outputs, and capture/compare timer T2 - deployed in industrial sensor nodes requiring mixed-signal control and low-power operation.
For engineers reviewing the P87C554SFAA,512 datasheet, P87C554SFAA,512 pinout, P87C554SFAA,512 application, or P87C554SFAA,512 equivalent, key selection criteria include its –40 °C to +85 °C extended temperature rating, PLCC-68 package, 16 MHz max clock, ADC active-in-idle capability, and dual DPTR support for efficient external memory access.
Technical Context
The P87C554SFAA,512 implements a static 80C51 core with 12-clock-per-instruction cycle, enabling deterministic timing at up to 16 MHz. Its enhanced peripheral set includes a dedicated 16-bit Timer T2 with four capture latches and three compare registers, plus two independent 8-bit PWM outputs synchronized to T2.
It integrates dual serial interfaces: a full-duplex UART with framing error detection and automatic address recognition, and an I²C-bus port supporting both master and slave byte-oriented transfers. The ADC operates with internal charge pump and supports conversion start via STADC pin or software trigger.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 80C51-compatible 8-bit CPU with 12-clock instruction cycle |
| Memory | 16 KB on-chip OTP EPROM + 512 × 8 RAM; expandable to 64 KB external |
| ADC | 8-channel, 10-bit successive-approximation ADC with internal reference and STADC pin trigger |
| PWM Outputs | Two independent 8-bit PWM channels (PWM0/PWM1), synchronized to Timer T2 |
| Timers | Three 16-bit timers: T0/T1 (standard), T2 (capture/compare with 4 latches & 3 comparators), T3 (watchdog) |
| Serial Interfaces | UART (enhanced, with auto-address recognition) + I²C-bus (master/slave, byte-oriented) |
| Operating Voltage | 2.7 V–5.5 V at 0–16 MHz; 4.5 V–5.5 V at 16–33 MHz (not applicable for this variant) |
| Temperature Range | –40 °C to +85 °C, qualified for industrial environments |
Pinout & Package
Package: Plastic Leaded Chip Carrier (PLCC), 68-pin, SOT188–3 footprint. Compatible with standard PLCC sockets and reflow profiles for industrial PCB assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 62–68 | ADC0–ADC7 / P5.0–P5.7 | Eight analog input channels; Port 5 functions as dedicated 8-bit input-only port for ADC multiplexing |
| 3 | STADC | Hardware trigger input to initiate ADC conversion (complements software start) |
| 4, 5 | PWM0, PWM1 | Dedicated open-drain PWM output pins; driven by Timer T2 match events |
| 15 | RST | Active-high reset input; also outputs 3-cycle reset pulse on Timer T3 overflow |
| 22, 23 | SCL, SDA | I²C-bus clock and bidirectional data lines; support standard-mode (100 kHz) and fast-mode (400 kHz) protocols |
| 48 | ALE/PROG | Address latch enable during external memory access; doubles as EPROM programming pulse input |
| 49 | EA/VPP | External access control (internal ROM if high); receives 12.75 V VPP during OTP programming |
| 58–61 | AVREF–, AVREF+, AVSS, AVDD | Dedicated analog power and reference pins - isolated from digital supply to minimize noise coupling into ADC |
Key Features
| Feature | Design Value |
|---|---|
| ADC Active in Idle Mode | Enables continuous analog monitoring without CPU wake-up, reducing system power in sensor polling applications |
| Dual DPTR Register | Allows simultaneous addressing of two external memory regions - critical for efficient data buffering and DMA-like operations |
| Four-Level Nested Interrupts | Supports prioritized real-time response across 15 interrupt sources including ADC EOC, PWM match, and I²C events |
| Programmable Port Output Modes | Per-bit configuration (pseudo-bidirectional, push-pull, open-drain, high-impedance) via P1M1/P1M2 registers - eliminates external level shifters |
| ONCE Emulation Mode | Enables in-circuit debugging via dedicated debug interface without requiring external emulator hardware |
| Reduced EMI Mode (ALE Inhibit) | Disables ALE toggling during external memory access - lowers radiated emissions in noise-sensitive industrial enclosures |
Applications
| Industrial Motor Control | Smart Sensor Node |
|---|---|
Use Scenario: Closed-loop speed regulation of BLDC motors using current sensing and commutation timing. IC Role / Device Role / Timing Role: Main controller executing PID algorithm, generating synchronized PWM for gate drivers, sampling analog current feedback via 10-bit ADC. Use Value: Capture/compare timer T2 ensures precise phase-aligned PWM edges; ADC active-in-idle enables background current sampling without CPU overhead. | Use Scenario: Battery-powered environmental monitor collecting temperature, humidity, and gas concentration data. IC Role / Device Role / Timing Role: System-on-chip managing sensor interfacing (I²C), analog signal acquisition (ADC), low-power scheduling (idle/power-down modes), and wireless data prep. Use Value: Dual serial interfaces allow concurrent sensor communication and host reporting; –40 °C to +85 °C rating ensures reliability in unconditioned outdoor enclosures. |
| Power Supply Monitoring | Legacy Industrial Bus Interface |
Use Scenario: Real-time monitoring of AC/DC converter rail voltages and overcurrent events in telecom power systems. IC Role / Device Role / Timing Role: Analog front-end controller acquiring multiple voltage/current rails via 8-channel ADC, triggering fault responses via GPIO and PWM shutdown signals. Use Value: Dedicated STADC pin enables immediate hardware-triggered conversion on transient detection; programmable port modes simplify direct connection to optocoupled fault lines. | Use Scenario: Protocol bridge between legacy 80C51-based PLC modules and modern I²C peripherals (e.g., EEPROM, DAC, IO expanders). IC Role / Device Role / Timing Role: Firmware-transparent bus translator leveraging native I²C master capability and 80C51 instruction compatibility for drop-in replacement. Use Value: Full 80C51 instruction set and pin-compatible memory interface allow reuse of existing firmware binaries; dual DPTR simplifies register-mapped peripheral access. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| P89C51RD2FA | 64 KB Flash (vs. 16 KB OTP), no built-in ADC, adds SPI interface, same PLCC-68 package | Lacks integrated ADC and I²C - requires external components for analog/sensor interfaces | Select when field firmware updates are required and analog integration is handled externally |
| AT89C55WD-24PU | 20 KB Flash, no ADC, no I²C, no capture/compare T2, PDIP-40 package (not pin-compatible) | Requires external ADC and I²C transceiver; limited timer feature set and lower temperature grade (0 °C to +70 °C) | Select only for cost-sensitive, non-industrial designs where external peripherals are acceptable |
Compared with P87C554SFAA,512, the P89C51RD2FA offers greater program memory and reprogrammability but sacrifices integrated analog and I²C functionality; the AT89C55WD-24PU provides basic 8051 compatibility at lower cost but lacks the mixed-signal features and extended temperature range essential for industrial deployment.
Availability
P87C554SFAA,512 is available at Aetrix Electronics and suitable for industrial motor control, smart sensor node development, power supply monitoring, and legacy bus interface applications requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for P87C554SFAA,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 leader delivering secure, connected, and intelligent solutions for automotive, industrial, IoT, mobile, and communication infrastructure markets.
The P87C554SFAA,512 belongs to NXP's legacy 80C51 microcontroller family, designed specifically for industrial embedded systems requiring robust analog integration, deterministic real-time control, and extended temperature operation without reliance on external support chips.
FAQ
What is the maximum operating frequency of the P87C554SFAA,512?
The P87C554SFAA,512 is rated for a maximum operating frequency of 16 MHz across its full –40 °C to +85 °C temperature range. It uses a 12-clock-per-instruction architecture, meaning each instruction cycle takes 12 oscillator periods - resulting in 1.33 million instructions per second (MIPS) at 16 MHz. This timing is fully static, allowing clock suspension without data loss.
Does the P87C554SFAA,512 support in-system programming?
No, the P87C554SFAA,512 contains one-time-programmable (OTP) EPROM memory and does not support in-system or in-application reprogramming. Programming requires a dedicated EPROM programmer applying 12.75 V to the EA/VPP pin (pin 49) while using XTAL1/XTAL2 and control signals. Once programmed, code cannot be erased or rewritten - making it suitable for finalized, high-reliability firmware deployments.
How many analog input channels does the P87C554SFAA,512 ADC support?
The P87C554SFAA,512 integrates an 8-channel, 10-bit successive-approximation ADC. Inputs are routed exclusively through Port 5 pins (P5.0 to P5.7), which function as a dedicated 8-bit input port for analog multiplexing. The ADC supports both software-triggered and hardware-triggered conversions via the STADC pin (pin 3), and remains operational during Idle mode - enabling low-power background sampling.
What power-saving modes are available on the P87C554SFAA,512?
The P87C554SFAA,512 provides three hardware-supported low-power states: Stop Clock Mode (oscillator halted, all logic frozen except RAM/SFRs), Idle Mode (CPU halted, peripherals including ADC, timers, and serial ports remain active), and Power-Down Mode (oscillator stopped, RAM retained down to 2.0 V). Wake-up from Power-Down is possible via hardware reset or enabled external interrupts - provided the WUPD bit (AUXR1.3) is set prior to entry.
Is the P87C554SFAA,512 pin-compatible with other 80C51 derivatives?
The P87C554SFAA,512 uses a proprietary 68-pin PLCC (SOT188–3) package with expanded peripheral mapping - including dedicated PWM, STADC, and I²C pins - and is not pin-compatible with standard 40-pin DIP or 44-pin PLCC 80C51 variants. Its pinout is unique to the P87C554 family; migration from generic 8051 devices requires PCB redesign to accommodate the full 68-pin layout and dedicated analog/power domains (AVDD, AVSS, AVREF±).
P87C554SFAA,512 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 68-LCC (J-Lead)
- Series:
- 87C
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Verified
- Core Processor:
- 8051
- Core Size:
- 8-Bit
- Speed:
- 16MHz
- Connectivity:
- EBI/EMI, I2C, UART/USART
- Peripherals:
- POR, PWM, WDT
- Number of I/O:
- 40
- Program Memory Size:
- 16KB (16K x 8)
- Program Memory Type:
- OTP
- EEPROM Size:
- -
- RAM Size:
- 512 x 8
- Voltage - Supply (Vcc/Vdd):
- 2.7V ~ 5.5V
- Data Converters:
- A/D 8x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
P87C554SFAA,512 FAQ
1.How can I place an order for P87C554SFAA,512 through Aetrix?
Please submit a Request for Quotation (RFQ) for P87C554SFAA,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 P87C554SFAA,512 reliable?
The price and inventory of P87C554SFAA,512 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P87C554SFAA,512 is usually 5 days.
3.What payment methods are accepted for P87C554SFAA,512?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P87C554SFAA,512 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P87C554SFAA,512?
P87C554SFAA,512 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P87C554SFAA,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 P87C554SFAA,512?
For technical support, including P87C554SFAA,512 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P87C554SFAA,512 requirements.
6.How does Aetrix verify that P87C554SFAA,512 is sourced from the original manufacturer or authorized distributors?
All P87C554SFAA,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 P87C554SFAA,512 meets industry standards.
7.What is the process for return or replacement of P87C554SFAA,512?
All P87C554SFAA,512 units undergo pre-shipment inspection (PSI). If there is an issue with P87C554SFAA,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 P87C554SFAA,512 part is unused and in its original packaging.
Return procedure for P87C554SFAA,512:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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