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NXP Semiconductors P80C552EFA/08,512
- Part No.:
- P80C552EFA/08,512
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 68-LCC (J-Lead)
- Datasheet:
-
P80C552EFA/08,512.pdf
- Description:
- IC MCU 8BIT ROMLESS 68PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:2,807
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Product details
Overview
P80C552EFA/08,512 from NXP Semiconductors (formerly Philips) is a ROMless 8-bit microcontroller based on the 80C51 core, featuring a 10-bit ADC with eight analog inputs, dual 8-bit PWM outputs, an additional 16-bit capture/compare timer (T2), two standard 16-bit timers, I²C and UART serial interfaces, and watchdog timer. It operates at up to 16 MHz across –40 °C to +85 °C and targets industrial motor control and sensor interface applications.
For engineers reviewing the P80C552EFA/08,512 datasheet, P80C552EFA/08,512 pinout, P80C552EFA/08,512 application, or P80C552EFA/08,512 equivalent, key selection considerations include its ROMless architecture requiring external program memory, temperature-rated PLCC-68 package, dual PWM timing resolution, 10-bit ADC sampling time of 8 oscillator cycles, and I²C master/slave capability with programmable clock rates down to 6.25 kHz.
Technical Context
The P80C552EFA/08,512 implements the 80C51 instruction set with full binary and BCD arithmetic support and bit-level manipulation. Its enhanced peripheral set includes a dedicated 16-bit timer T2 with four capture latches and three compare registers, enabling precise input capture and synchronized output generation.
It integrates dual serial interfaces: a full-duplex UART compatible with 80C51 and an I²C-bus port supporting both master and slave modes with software-selectable clock rates (6.25–400 kHz). Power management includes idle mode (CPU halted, peripherals active) and power-down mode (oscillator stopped, RAM retained).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | 80C51-compatible 8-bit CPU with 100+ instructions; 58% executed in 0.75 µs at 16 MHz |
| ADC Resolution | 10-bit successive approximation ADC with 8 multiplexed inputs; conversion time = 50 oscillator cycles |
| PWM Outputs | Two independent 8-bit pulse-width modulated outputs (PWM0/PWM1) for motor/servo control |
| Timer System | Three 16-bit timers: two standard (T0/T1), one enhanced (T2) with capture/compare and toggle functions |
| Serial Interfaces | UART (80C51-compatible) + I²C-bus (master/slave, programmable clock from 6.25 kHz to 400 kHz) |
| Operating Range | –40 °C to +85 °C; supply voltage 4.5 V to 5.5 V; max 16 MHz crystal frequency |
| Memory Architecture | ROMless (external program memory required); 256 × 8 bytes on-chip RAM; expandable to 64 kB |
Pinout & Package
Package: Plastic Leaded Chip Carrier (PLCC), 68-pin, SOT188-2, lead-free per RoHS.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0.0–P0.7 | Port 0 bidirectional I/O / AD0–AD7 / A0–A7 | Open-drain bus port; multiplexes low-order address/data during external memory access |
| P1.0–P1.3 | CT0I–CT3I | Capture timer inputs for T2 event detection on rising/falling edges |
| P1.4 / P1.5 | T2 / RT2 | T2 event counter input and reset signal (rising-edge triggered) |
| P1.6 / P1.7 | SCL / SDA | I²C-bus clock and data lines with I²C-compliant thresholds (VIL ≤ 1.5 V, VIH ≥ 3.0 V) |
| P3.0 / P3.1 | RxD / TxD | Full-duplex UART serial interface compatible with standard 80C51 timing |
| P4.0–P4.5 | CMSR0–CMSR5 | Compare-set/reset outputs from T2 match events; used for synchronized digital waveform generation |
| P4.6 / P4.7 | CMT0 / CMT1 | Compare-toggle outputs from T2 match events; generate precise periodic toggles |
| P5.0–P5.7 | ADC0–ADC7 | Dedicated 8-channel analog input port; referenced to AVREF+ and AVREF– |
| PWM0 / PWM1 | PWM outputs | 8-bit resolution pulse-width modulated signals with configurable duty cycle and period |
| STADC | ADC start trigger | Hardware-initiated ADC conversion start; complements software-triggered conversion |
| EW | Watchdog enable | Active-high input that enables T3 watchdog timer and disables power-down mode |
Key Features
| Feature | Design Value |
|---|---|
| ROMless architecture | Enables field-programmable firmware via external EPROM/Flash without mask ROM commitment |
| 10-bit ADC with 8 inputs | Supports high-fidelity sensor acquisition (e.g., thermistors, potentiometers) with ±2 LSB integral non-linearity |
| Dual 8-bit PWM outputs | Provides independent, synchronized motor drive signals with adjustable frequency and dead-time insertion |
| T2 capture/compare timer | Enables precise measurement of pulse width/frequency and generation of multi-phase waveforms |
| I²C-bus master/slave port | Reduces system component count by integrating standardized communication with EEPROMs, sensors, and DACs |
| Two power-reduction modes | Idle mode retains RAM/timers/interrupts while halting CPU; power-down mode reduces current to 50 µA |
Applications
| Industrial Motor Control | Sensor Interface Module |
|---|---|
Use Scenario: Controlling speed and direction of brushed DC motors in factory automation systems using feedback from hall-effect sensors. IC Role / Device Role / Timing Role: Central controller executing PID loops, generating PWM drive signals, capturing encoder pulses via CT0I–CT3I inputs, and communicating status over I²C. Use Value: Integrated T2 capture/compare eliminates need for external timing ICs; dual PWM allows independent control of two motors from single chip. | Use Scenario: Aggregating temperature, pressure, and humidity readings from multiple analog sensors in environmental monitoring nodes. IC Role / Device Role / Timing Role: Analog front-end processor acquiring 10-bit samples from 8-channel ADC, applying linearization in firmware, and transmitting results via UART to host MCU. Use Value: On-chip 10-bit ADC with ±2 LSB INL avoids external precision ADC; STADC pin enables hardware-synchronized sampling across channels. |
| Power Supply Monitoring | Legacy System Upgrade |
Use Scenario: Real-time monitoring of rail voltages and current in telecom power shelves with fault logging and shutdown signaling. IC Role / Device Role / Timing Role: Supervisor IC performing periodic ADC measurements, comparing against thresholds, asserting fault flags via GPIO, and maintaining watchdog supervision. Use Value: Built-in watchdog (T3) and EW pin simplify safety-critical supervision; power-down mode extends battery life in backup monitoring circuits. | Use Scenario: Replacing obsolete 80C51-based controllers in legacy industrial equipment where PCB layout cannot be modified. IC Role / Device Role / Timing Role: Pin-compatible upgrade path offering enhanced peripherals (I²C, dual PWM, capture timer) while retaining identical instruction set and memory map. Use Value: Software compatibility preserves existing firmware investment; PLCC-68 footprint matches legacy sockets, minimizing rework. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT89C51RC2-UM | 8 kB flash, 256 B RAM, no integrated ADC or I²C; requires external components for analog/sensor functions | Lacks native 10-bit ADC and I²C, limiting suitability for sensor-rich designs without added ICs | Select when cost-sensitive, flash-based firmware updates are required and analog integration is handled externally |
| STC89C52RC-PD | 8 kB flash, 512 B RAM, 8-channel 8-bit ADC, no I²C; enhanced interrupt structure and faster max clock (33 MHz) | Lower ADC resolution (8-bit vs. 10-bit) and missing I²C reduce interoperability with standard sensor buses | Prefer for high-speed control loops where 8-bit ADC precision suffices and I²C is not needed |
Compared with AT89C51RC2-UM and STC89C52RC-PD, the P80C552EFA/08,512 provides unique integration of 10-bit ADC, dual PWM, and I²C in a ROMless architecture-enabling flexible firmware deployment while reducing BOM count in sensor and motor control systems.
Availability
P80C552EFA/08,512 is available at Aetrix Electronics and suitable for industrial motor control, sensor interface modules, power supply monitoring, and legacy system upgrades requiring stable component supply across extended temperature ranges.
Supply support for P80C552EFA/08,512 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 high-performance mixed-signal solutions for automotive, industrial, and IoT applications.
The P80C552EFA/08,512 belongs to NXP's legacy 80C51 derivative family, designed specifically for cost-sensitive, real-time embedded control tasks requiring analog sensing, precise timing, and multi-protocol communication in harsh environments.
FAQ
What is the maximum operating frequency of the P80C552EFA/08,512?
The P80C552EFA/08,512 supports a maximum oscillator frequency of 16 MHz across its specified operating temperature range of –40 °C to +85 °C. At this frequency, 58% of instructions execute in 0.75 µs, and multiply/divide operations require 3 µs. The device is not rated for 24 MHz operation-only P80C552IBx/IFx variants support that speed grade.
Does the P80C552EFA/08,512 include on-chip program memory?
No, the P80C552EFA/08,512 is a ROMless variant. It requires external program memory (e.g., EPROM or Flash) accessed via its multiplexed Port 0 and Port 2 address/data bus. This distinguishes it from the P83C552EFA/xxx (mask-ROM) and P87C552 (EPROM) variants, all sharing identical peripheral sets and pinouts.
How does the P80C552EFA/08,512 handle analog reference voltage?
The P80C552EFA/08,512 uses dedicated pins AVREF+ and AVREF– to define the 10-bit ADC's full-scale range. These pins accept an external reference (e.g., 5.12 V) or connect directly to AVDD/AVSS. Internal resistance between AVREF+ and AVREF– is 10–50 kΩ, and analog input voltage must stay within AVSS–0.2 V to AVDD+0.2 V to avoid damage or measurement error.
Can the P80C552EFA/08,512 operate in low-power modes?
Yes, the P80C552EFA/08,512 supports two hardware-controlled low-power modes. Idle mode halts the CPU while preserving RAM, timers, serial ports, and interrupts-drawing 10 mA at 16 MHz. Power-down mode stops the oscillator and retains only RAM contents, reducing current to 50 µA. Both modes are controlled via the PCON register.
What serial communication protocols does the P80C552EFA/08,512 support?
The P80C552EFA/08,512 integrates two independent serial interfaces: a full-duplex UART compatible with the standard 80C51 and an I²C-bus port supporting both master and slave roles. The I²C clock rate is software-programmable from 6.25 kHz to 400 kHz, though rates above 100 kHz exceed standard I²C specification limits.
P80C552EFA/08,512 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 68-LCC (J-Lead)
- Series:
- 80C
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not 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:
- -
- Program Memory Type:
- ROMless
- EEPROM Size:
- -
- RAM Size:
- 256 x 8
- Voltage - Supply (Vcc/Vdd):
- 4.5V ~ 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:
P80C552EFA/08,512 FAQ
1.How can I place an order for P80C552EFA/08,512 through Aetrix?
Please submit a Request for Quotation (RFQ) for P80C552EFA/08,512 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 P80C552EFA/08,512 reliable?
The price and inventory of P80C552EFA/08,512 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P80C552EFA/08,512 is usually 5 days.
3.What payment methods are accepted for P80C552EFA/08,512?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P80C552EFA/08,512 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P80C552EFA/08,512?
P80C552EFA/08,512 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P80C552EFA/08,512 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 P80C552EFA/08,512?
For technical support, including P80C552EFA/08,512 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P80C552EFA/08,512 requirements.
6.How does Aetrix verify that P80C552EFA/08,512 is sourced from the original manufacturer or authorized distributors?
All P80C552EFA/08,512 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 P80C552EFA/08,512 meets industry standards.
7.What is the process for return or replacement of P80C552EFA/08,512?
All P80C552EFA/08,512 units undergo pre-shipment inspection (PSI). If there is an issue with P80C552EFA/08,512, 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 P80C552EFA/08,512 part is unused and in its original packaging.
Return procedure for P80C552EFA/08,512:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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