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NXP Semiconductors P80C552EFA/08,518
- Part No.:
- P80C552EFA/08,518
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 68-LCC (J-Lead)
- Datasheet:
-
P80C552EFA/08,518.pdf
- Description:
- IC MCU 8BIT ROMLESS 68PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:3,753
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Product details
Overview
P80C552EFA/08,518 from Philips Semiconductors is a ROMless 8-bit microcontroller based on the 80C51 architecture, featuring a 10-bit ADC with eight analog inputs, dual 8-bit PWM outputs (PWM0/PWM1), an additional 16-bit capture/compare timer (T2) with four capture and three compare registers, I²C-bus 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, sensor interface, and embedded power management systems.
For engineers reviewing the P80C552EFA/08,518 datasheet, P80C552EFA/08,518 pinout, P80C552EFA/08,518 application, or P80C552EFA/08,518 equivalent, key selection criteria include its –40 °C to +85 °C temperature rating, PLCC-68 package, 16 MHz max clock, dual PWM capability, and I²C master/slave support - all critical for ruggedized real-time control designs requiring analog sensing and synchronized digital output timing.
Technical Context
The P80C552EFA/08,518 implements the standard 80C51 instruction set with full binary and BCD arithmetic support and bit manipulation. Its enhanced peripheral set includes two standard 16-bit timers (T0/T1), a third 16-bit timer (T2) with dedicated capture latches (CT0I–CT3I) and compare outputs (CMSR0–CMSR5, CMT0/CMT1), and dual independent PWM channels driven by T2 match events.
It integrates an 8-input, 10-bit successive-approximation ADC with programmable start (STADC pin or software), internal reference (AVREF±), and sampling time of 8 oscillator cycles. The I²C port supports byte-oriented master and slave functions with configurable clock rates up to 400 kHz (in non-I²C-bus-compliant modes), while the UART remains fully compatible with the 80C51.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | 80C51-compatible 8-bit CPU with 100+ instructions; executes 58% of instructions in 0.75 µs at 16 MHz. |
| Memory | ROMless (no internal program memory); 256 × 8 bytes on-chip RAM; external program/data memory expandable to 64 kB. |
| ADC | 10-bit SAR ADC with 8 multiplexed analog inputs (P5.0–P5.7); conversion time 50 clock cycles; ±1 LSB DNL, ±2 LSB INL. |
| PWM Outputs | Two independent 8-bit resolution PWM outputs (PWM0, PWM1); generated via T2 compare matches; synchronized timing control. |
| Timers | Three 16-bit timers: T0/T1 (standard 80C51), T2 (enhanced with 4 capture latches and 3 compare registers). |
| Serial Interfaces | Full-duplex UART (80C51-compatible) + I²C-bus port (master/slave, SCL/SDA on P1.6/P1.7) with programmable clock dividers. |
| Operating Range | –40 °C to +85 °C ambient; 4.5 V to 5.5 V supply; 3.5–16 MHz crystal or external clock input. |
Pinout & Package
Package: Plastic Leaded Chip Carrier (PLCC-68), SOT188-2, lead-free compatible per original Philips specification.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RST | Reset input/output | Active-high reset input; outputs reset pulse on T3 overflow; requires ≥24 oscillator periods high for valid reset. |
| XTAL1/XTAL2 | Oscillator interface | XTAL1: inverter input for crystal or external clock; XTAL2: inverter output; external clock applied to XTAL1 only. |
| P0.0–P0.7 | Multiplexed I/O / AD0–AD7 | Open-drain bidirectional port; serves as low-order address/data bus during external memory access; strong pull-ups when emitting '1'. |
| P1.0–P1.3 | Capture inputs | CT0I–CT3I: edge-triggered capture inputs for T2; used to timestamp external events with 16-bit resolution. |
| P1.4/P1.5 | T2 event/reset | T2 (P1.4): event counter input; RT2 (P1.5): rising-edge reset for T2; enables precise pulse-width or period measurement. |
| P1.6/P1.7 | I²C interface | SCL/SDA: open-drain I²C-bus lines compliant with I²C specification thresholds (VIL ≤ 1.5 V, VIH ≥ 3.0 V). |
| P3.0/P3.1 | UART interface | RxD/TxD: full-duplex UART pins; functionally identical to 80C51; supports standard baud rate generation via Timer 1. |
| P4.0–P4.5 | Compare outputs | CMSR0–CMSR5: active-high T2 compare outputs; used for synchronized control signals (e.g., gate drivers, LED dimming). |
| P4.6/P4.7 | Compare/toggle | CMT0/CMT1: toggle on T2 match; generate precise square waves or edge-aligned PWM without software intervention. |
| P5.0–P5.7 | Analog inputs | ADC0–ADC7: dedicated 8-channel analog input port; high-impedance inputs referenced to AVREF±; supports single-ended acquisition. |
| PWM0/PWM1 | PWM outputs | Dedicated 8-bit PWM outputs; duty cycle controlled by T2 compare register values; hardware-synchronized, no CPU overhead. |
| STADC | ADC start trigger | Hardware start signal for ADC conversion; falling edge initiates conversion; avoids software latency in time-critical sampling. |
| EW | Watchdog enable | Enable Watchdog (T3) and disable power-down mode; must be held high or low per system safety policy; not floating. |
| EA/ALE/PSEN | External memory control | EA: selects internal/external program memory; ALE: latches P0 address; PSEN: strobes external program memory reads. |
| VDD/VSS/AVDD/AVSS | Power domains | Digital (VDD/VSS) and analog (AVDD/AVSS) supplies separated to minimize noise coupling into ADC and PWM references. |
| AVREF+/AVREF– | ADC reference | Differential reference inputs for ADC; internal 5.12 V reference possible; RREF = 10–50 kΩ between AVREF+ and AVREF–. |
Key Features
| Feature | Design Value |
|---|---|
| ROMless architecture | Enables field-programmable firmware loading via external EPROM or Flash; eliminates mask-ROM NRE costs and lead times. |
| Dual 8-bit PWM outputs | Hardware-generated, T2-synchronized PWM signals reduce CPU load in motor control and lighting applications. |
| Four capture latches + three compare registers | Supports simultaneous measurement of multiple pulse parameters (e.g., frequency, duty cycle, phase) in real time. |
| I²C-bus master/slave interface | Enables direct communication with sensors, EEPROMs, and other I²C peripherals without external protocol logic. |
| Two power-saving modes | Idle mode preserves RAM/timers/interrupts while halting CPU; power-down mode stops oscillator and retains only RAM contents. |
Applications
| Industrial Motor Control | Sensor Interface Module |
|---|---|
Use Scenario: Closed-loop speed and position control of BLDC or stepper motors using feedback from Hall sensors or encoders. IC Role / Device Role / Timing Role: Central controller executing commutation logic, reading analog current/voltage feedback via ADC, generating synchronized PWM drive signals, and managing I²C-connected temperature sensors. Use Value: Hardware capture inputs (CT0I–CT3I) timestamp encoder edges with 16-bit precision; dual PWM outputs drive half-bridge gate drivers with matched timing; reduces jitter vs. software-timed PWM. | Use Scenario: Multi-sensor data acquisition node measuring temperature, pressure, and humidity in HVAC or environmental monitoring systems. IC Role / Device Role / Timing Role: Analog front-end processor acquiring 8-channel sensor signals, performing local calibration, and transmitting results over I²C to a host MCU. Use Value: 10-bit ADC with 8 multiplexed inputs and hardware STADC trigger enables deterministic sampling intervals; I²C slave mode allows seamless integration into existing sensor buses. |
| Embedded Power Management | Programmable Lighting Controller |
Use Scenario: Intelligent power supply supervision and sequencing in telecom or industrial power systems. IC Role / Device Role / Timing Role: Monitors rail voltages/currents via ADC, controls DC-DC converter enable signals via GPIO, logs faults using UART, and triggers watchdog reset on anomaly. Use Value: On-chip watchdog (T3) with EW pin enables fail-safe reset; dual PWM outputs can drive synchronous rectifier gates or fan speed control; wide –40 °C to +85 °C range ensures reliability in uncontrolled environments. | Use Scenario: DALI or analog-dimmable LED driver with color mixing and thermal derating. IC Role / Device Role / Timing Role: Generates precise PWM dimming signals for RGB LEDs, reads thermal sensors via ADC, adjusts brightness based on temperature, and communicates settings via UART/I²C. Use Value: Two independent 8-bit PWM channels allow separate control of red/green/blue LEDs; hardware T2 compare outputs (CMSR0–CMSR5) enable synchronized multi-channel dimming without CPU intervention. |
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 | 8051 core with 32 kB Flash, 1280 B RAM, no integrated ADC or PWM; requires external DAC/PWM IC for analog control. | Lacks native ADC and PWM; suitable for digital-only control where external analog interface is acceptable. | Select when firmware updateability via Flash outweighs need for integrated analog peripherals. |
| ST7FLITE29F2 | 8-bit ST7 core with 32 kB Flash, 1.5 kB RAM, 10-bit ADC (8 ch), 2x PWM, but no I²C; uses SPI instead. | No I²C interface; requires SPI-based sensor/EEPROM ecosystem; different instruction set and toolchain. | Select when SPI-based peripheral ecosystem is already established and I²C is not required. |
Compared with AT89C51RC2-UM and ST7FLITE29F2, the P80C552EFA/08,518 uniquely combines ROMless flexibility, integrated 10-bit ADC, dual hardware PWM, I²C, and capture/compare timer in a single 80C51-compatible device - making it optimal for cost-sensitive, analog-intensive embedded control where firmware is loaded externally and I²C connectivity is essential.
Availability
P80C552EFA/08,518 is available at Aetrix Electronics and suitable for industrial motor control, sensor interface modules, and embedded power management systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for P80C552EFA/08,518 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
Philips Semiconductors (now NXP Semiconductors) is a global semiconductor manufacturer founded in the Netherlands, specializing in mixed-signal ICs, automotive electronics, and legacy microcontrollers.
The 80C552 product line was designed for industrial and automotive embedded control applications demanding integrated analog acquisition, precise timing, and robust serial communication - extending the 80C51 architecture with hardware acceleration for real-time signal processing.
FAQ
What is the maximum operating frequency of the P80C552EFA/08,518?
The P80C552EFA/08,518 supports a maximum oscillator frequency of 16 MHz, validated 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 complete in 3 µs. The device also supports lower frequencies down to 3.5 MHz for ultra-low-power operation.
Does the P80C552EFA/08,518 include on-chip program memory?
No, the P80C552EFA/08,518 is the ROMless variant of the 8XC552 family. It contains no internal program memory and requires external program memory (e.g., EPROM or Flash) accessed via the multiplexed P0/P2 bus. This distinguishes it from the P83C552EFA/xxx (mask-ROM) and P87C552 (EPROM) variants.
How many analog input channels does the P80C552EFA/08,518 ADC support?
The P80C552EFA/08,518 integrates a single 10-bit successive-approximation ADC with eight multiplexed analog input channels (ADC0–ADC7), mapped exclusively to Port 5 (P5.0–P5.7). These inputs support single-ended acquisition with differential reference pins (AVREF+, AVREF–) and a typical sampling time of 8 oscillator cycles.
Can the P80C552EFA/08,518 operate in low-power modes?
Yes, the P80C552EFA/08,518 supports two software-selectable low-power modes: Idle mode freezes the CPU while preserving RAM, timers, serial ports, and interrupts; and Power-down mode stops the oscillator and retains only RAM contents. Current draw drops to 10 mA (idle) and 50 µA (power-down) at 16 MHz, enabling battery-operated or energy-conscious designs.
What serial communication interfaces are integrated in the P80C552EFA/08,518?
The P80C552EFA/08,518 integrates two serial interfaces: a full-duplex UART compatible with the standard 80C51, and an I²C-bus port with master and slave capabilities (SCL/SDA on P1.6/P1.7). The I²C interface supports programmable clock rates up to 400 kHz and meets I²C voltage threshold specifications for reliable multi-master bus operation.
P80C552EFA/08,518 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 68-LCC (J-Lead)
- Series:
- 80C
- Packaging:
- Tape & Reel (TR)
- 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/08,518 FAQ
1.How can I place an order for P80C552EFA/08,518 through Aetrix?
Please submit a Request for Quotation (RFQ) for P80C552EFA/08,518 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/08,518 reliable?
The price and inventory of P80C552EFA/08,518 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P80C552EFA/08,518 is usually 5 days.
3.What payment methods are accepted for P80C552EFA/08,518?
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P80C552EFA/08,518 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P80C552EFA/08,518 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/08,518?
For technical support, including P80C552EFA/08,518 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P80C552EFA/08,518 requirements.
6.How does Aetrix verify that P80C552EFA/08,518 is sourced from the original manufacturer or authorized distributors?
All P80C552EFA/08,518 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/08,518 meets industry standards.
7.What is the process for return or replacement of P80C552EFA/08,518?
All P80C552EFA/08,518 units undergo pre-shipment inspection (PSI). If there is an issue with P80C552EFA/08,518, 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/08,518 part is unused and in its original packaging.
Return procedure for P80C552EFA/08,518:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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