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NXP Semiconductors P80C552EFB/08,557
- Part No.:
- P80C552EFB/08,557
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 80-BQFP
- Datasheet:
-
P80C552EFB/08,557.pdf
- Description:
- IC MCU 8BIT ROMLESS 80PQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,877
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Product details
Overview
P80C552EFB/057 from Philips Semiconductors 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), I²C and UART serial interfaces, and dual power-reduction modes (idle and power-down). It operates at up to 16 MHz across –40 °C to +85 °C and targets industrial motor control, sensor interface, and embedded automation systems.
For engineers reviewing the P80C552EFB/057 datasheet, P80C552EFB/057 pinout, P80C552EFB/057 application, or P80C552EFB/057 equivalent, key selection considerations include its QFP-64 package, 16 MHz max frequency at extended temperature, dual PWM timing resolution, T2 capture/compare register set (CMSR0–CMSR5, CMT0/CMT1), and I²C master/slave capability with programmable clock rates down to 6.25 kHz.
Technical Context
The P80C552EFB/057 implements the standard 80C51 instruction set with full binary and BCD arithmetic support and bit-level manipulation. Its enhanced peripheral set includes a dedicated 16-bit timer/event counter (T2) with four capture latches and three compare registers, enabling precise input capture and synchronized output generation.
It integrates two independent serial interfaces: a full-duplex UART compatible with 80C51 and an I²C-bus port supporting both master and slave functions with software-selectable clock rates (6.25–400 kHz), though only rates ≤100 kHz comply with I²C specification. The device uses separate analog (AVDD/AVSS) and digital (VDD/VSS) power domains with dedicated reference pins (AVREF+/AVREF–) for the 10-bit ADC.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | 80C51-compatible 8-bit RISC core with 100+ instructions; executes 58% of instructions in 0.75 µs at 16 MHz. |
| ADC Resolution | 10-bit successive-approximation ADC with ±1 LSB differential non-linearity; supports 8 multiplexed analog inputs (P5.0–P5.7). |
| PWM Outputs | Two independent 8-bit pulse-width modulated outputs (PWM0/PWM1); each provides variable duty cycle control for motor/servo drive. |
| Timer System | Three 16-bit timers: two standard (T0/T1), one enhanced (T2) with four capture latches and three compare registers for event timing and waveform generation. |
| Serial Interfaces | UART (full-duplex, 80C51-compatible) and I²C-bus (master/slave, programmable clock from 6.25–400 kHz; only ≤100 kHz meets I²C spec). |
| 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. |
| Power Modes | Idle mode (CPU halted, RAM/timers/serial/interrupts active) and power-down mode (oscillator stopped, RAM retained, reset-only wake-up). |
Pinout & Package
Package: Plastic Quad Flat Pack (QFP), 64-pin, SOT318-2, lead pitch 0.5 mm, body size 14.0 × 14.0 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD (Pin 1) | Digital power supply | +5 V supply for digital logic; must be decoupled near pin; AVDD must track within ±0.2 V. |
| XTAL1 (Pin 32) | Oscillator input | Input to internal inverting amplifier; accepts crystal or external clock signal (duty cycle not critical). |
| XTAL2 (Pin 31) | Oscillator output | Output of internal oscillator amplifier; left open when external clock used. |
| RST (Pin 9) | Reset input/output | Active-high reset input; also outputs reset pulse on T3 watchdog overflow. |
| P0.0–P0.7 (Pins 58–51) | Multiplexed address/data bus | Open-drain I/O; serves as low-order address/data bus during external memory access; requires pull-ups. |
| P1.0–P1.3 (Pins 10–13) | Capture timer inputs | CT0I–CT3I: asynchronous edge-triggered inputs for T2 capture latches. |
| P1.4 (Pin 14) | T2 event input | T2: external event count input for T2 counter. |
| P1.5 (Pin 15) | T2 reset input | RT2: rising-edge triggered reset for T2 counter. |
| P1.6/P1.7 (Pins 16/17) | I²C interface | SCL/SDA: open-drain bidirectional I²C-bus lines compliant with I²C voltage thresholds. |
| P3.0/P3.1 (Pins 18/19) | UART interface | RxD/TxD: full-duplex UART serial I/O compatible with standard 80C51 timing. |
| P4.0–P4.5 (Pins 80,1–6) | Compare outputs | CMSR0–CMSR5: active-high outputs toggled/set/reset on T2 compare match. |
| P4.6/P4.7 (Pins 7/8) | Compare toggle outputs | CMT0/CMT1: outputs toggled on T2 compare match; used for high-speed waveform generation. |
| P5.0–P5.7 (Pins 68–62,71–64) | Analog inputs | ADC0–ADC7: dedicated 8-channel analog input port; referenced to AVREF+/AVREF–. |
| STADC (Pin 74) | ADC start trigger | Hardware start signal for ADC conversion; complements software-initiated conversion. |
| PWM0/PWM1 (Pins 75/76) | PWM outputs | Dual 8-bit PWM outputs; duty cycle controlled via special function registers. |
| EW (Pin 77) | Watchdog enable | High-active enable for T3 watchdog timer; also disables power-down mode when asserted. |
| AVDD/AVSS (Pins 63/61) | Analog power domain | Separate analog supply (AVDD) and ground (AVSS); required for ADC accuracy and noise immunity. |
| AVREF+/AVREF– (Pins 60/59) | ADC reference | External reference voltage terminals; 10 kΩ to 50 kΩ resistance between them required for proper ADC operation. |
Key Features
| Feature | Design Value |
|---|---|
| ROMless architecture | Enables in-system programming via external EPROM or flash; eliminates mask-ROM NRE cost and lead time. |
| 16-bit capture/compare timer (T2) | Supports precise input capture (e.g., encoder pulses) and synchronized output generation (e.g., PWM, stepper control) with four latches and three compare registers. |
| Dual 8-bit PWM outputs | Provides independent duty-cycle control for DC motor speed regulation or LED dimming without CPU intervention. |
| I²C-bus master/slave interface | Reduces external component count for sensor/EEPROM communication; programmable clock allows trade-off between speed and noise immunity. |
| 10-bit ADC with 8-channel mux | Delivers ±2 LSB integral non-linearity and ±3 LSB absolute voltage error over full range; supports analog sensor interfacing with minimal external circuitry. |
| Separate analog/digital power domains | Minimizes digital switching noise coupling into ADC measurements; requires independent AVDD/AVSS routing and filtering. |
Applications
| Industrial Motor Control | Sensor Interface Module |
|---|---|
Use Scenario: Closed-loop speed control of 3-phase BLDC motors using hall-effect feedback and current sensing. IC Role / Device Role / Timing Role: Central controller executing commutation logic, reading hall sensors via P1.0–P1.3 (CT0I–CT3I), generating PWM0/PWM1 for gate drivers, and sampling current via ADC0–ADC2. Use Value: T2 capture latches precisely timestamp hall transitions; dual PWM outputs synchronize phase drive; 10-bit ADC resolves <1% current measurement error. | Use Scenario: Multi-sensor environmental monitoring node (temperature, humidity, pressure) with local data logging and I²C EEPROM storage. IC Role / Device Role / Timing Role: Sensor aggregator reading analog sensors on P5.0–P5.7, communicating with I²C EEPROM (P1.6/P1.7), and managing low-power sleep cycles via idle mode. Use Value: Integrated I²C master eliminates external bus controller; 10-bit ADC resolves sub-degree temperature changes; idle mode reduces average current to 10 mA at 16 MHz. |
| Embedded Automation Controller | Power Supply Monitoring Unit |
Use Scenario: Programmable logic controller (PLC) I/O module handling discrete inputs, analog outputs, and serial HMI communication. IC Role / Device Role / Timing Role: Real-time I/O processor using P0–P4 for digital I/O expansion, PWM0/PWM1 for analog output simulation, and UART (P3.0/P3.1) for Modbus RTU host interface. Use Value: Five quasi-bidirectional ports provide 40+ configurable I/O lines; UART timing matches Modbus 9600–115200 bps requirements; ROMless design enables field firmware updates. | Use Scenario: AC/DC power supply with overvoltage, undervoltage, and overtemperature protection using isolated analog feedback. IC Role / Device Role / Timing Role: Safety monitor sampling isolated voltage/current/temperature signals via ADC0–ADC3, asserting hardware shutdown via CMSR0–CMSR2 outputs, and running watchdog (T3) for fail-safe reset. Use Value: Dedicated STADC pin enables fast hardware-triggered conversion on fault detection; EW pin disables power-down during fault response; ±1 LSB DNL ensures accurate threshold detection. |
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 MCU with 32 kB Flash, 1 kB RAM, no integrated ADC or I²C; requires external ADC and level-shifting for I²C. | Lacks native 10-bit ADC and I²C, increasing BOM count and PCB area for sensor/EEPROM interfaces. | Select when Flash reprogrammability is critical and analog/peripheral integration can be added externally. |
| ST7FLITE09Y0M6 | 8-bit ST7 core with 16 kB Flash, 12-bit ADC (10 ch), SPI/I²C/UART, but no capture/compare timer or dual PWM outputs. | Higher ADC resolution but missing T2 capture/compare functionality needed for precise event timing or synchronized waveform generation. | Select for higher-precision analog acquisition where capture timing is handled by software or external logic. |
Compared with AT89C51RC2-UM and ST7FLITE09Y0M6, the P80C552EFB/057 uniquely combines ROMless flexibility, integrated 10-bit ADC, dual PWM, I²C, and a dedicated 16-bit capture/compare timer-making it optimal for cost-sensitive, mixed-signal embedded control where hardware event timing and analog interface density are critical.
Availability
P80C552EFB/057 is available at Aetrix Electronics and suitable for industrial motor control, sensor interface modules, embedded automation controllers, power supply monitoring units, and closed-loop thermal management systems requiring stable component supply across extended temperature ranges.
Supply support for P80C552EFB/057 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 leader known for automotive, industrial, and connectivity solutions, with deep expertise in mixed-signal microcontrollers and system-on-chip integration.
The 80C552 product line was designed specifically for cost-effective, real-time embedded control in harsh environments-emphasizing analog integration (10-bit ADC), deterministic timing (capture/compare timer), and dual-domain power management (digital/analog supplies, idle/power-down modes).
FAQ
What is the maximum operating frequency of the P80C552EFB/057 and what temperature range does it support?
The P80C552EFB/057 supports a maximum oscillator frequency of 16 MHz and is rated for operation from –40 °C to +85 °C. This extended temperature range is confirmed in the ordering information table, where "EFB" denotes the –40 °C to +85 °C grade in QFP packaging. Operation at 24 MHz is reserved for "IB" and "IF" variants, not the EFB version.
Does the P80C552EFB/057 include on-chip program memory, and how is code loaded?
No, the P80C552EFB/057 is a ROMless variant of the 80C552 family. It lacks internal program memory and requires external code storage-typically an EPROM or Flash memory connected via the multiplexed P0 (AD0–AD7) and P2 (A8–A15) buses. Code execution begins from external memory when EA is held low, or from internal ROM if present (not applicable here).
How many analog inputs does the P80C552EFB/057 support, and what is the ADC resolution and accuracy?
The P80C552EFB/057 supports eight analog inputs (ADC0–ADC7) on Port 5, with a 10-bit successive-approximation ADC. Its accuracy is specified as ±1 LSB differential non-linearity, ±2 LSB integral non-linearity, ±2 LSB offset error, and ±3 LSB absolute voltage error under standard conditions (AVREF– = 0 V, AVREF+ = 5.12 V).
What serial communication interfaces are integrated into the P80C552EFB/057?
The P80C552EFB/057 integrates two serial interfaces: a full-duplex UART (compatible with the standard 80C51) on P3.0 (RxD) and P3.1 (TxD), and an I²C-bus interface on P1.6 (SCL) and P1.7 (SDA) supporting both master and slave modes with programmable clock rates from 6.25 kHz to 400 kHz (though only ≤100 kHz complies with I²C specification).
What power-saving modes does the P80C552EFB/057 offer, and how do they differ?
The P80C552EFB/057 offers two software-selectable power-reduction modes: Idle mode halts the CPU while preserving RAM contents and keeping timers, serial ports, and interrupts active; Power-down mode stops the oscillator entirely, retaining only RAM data-requiring a hardware reset to resume operation. Both modes are controlled via the PCON special function register.
P80C552EFB/08,557 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 80-BQFP
- Series:
- 80C
- Packaging:
- Tray
- 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:
P80C552EFB/08,557 FAQ
1.How can I place an order for P80C552EFB/08,557 through Aetrix?
Please submit a Request for Quotation (RFQ) for P80C552EFB/08,557 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 P80C552EFB/08,557 reliable?
The price and inventory of P80C552EFB/08,557 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P80C552EFB/08,557 is usually 5 days.
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Once your P80C552EFB/08,557 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 P80C552EFB/08,557?
For technical support, including P80C552EFB/08,557 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P80C552EFB/08,557 requirements.
6.How does Aetrix verify that P80C552EFB/08,557 is sourced from the original manufacturer or authorized distributors?
All P80C552EFB/08,557 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 P80C552EFB/08,557 meets industry standards.
7.What is the process for return or replacement of P80C552EFB/08,557?
All P80C552EFB/08,557 units undergo pre-shipment inspection (PSI). If there is an issue with P80C552EFB/08,557, 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 P80C552EFB/08,557 part is unused and in its original packaging.
Return procedure for P80C552EFB/08,557:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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