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NXP Semiconductors P80C552IBA/08,512
- Part No.:
- P80C552IBA/08,512
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 68-LCC (J-Lead)
- Datasheet:
-
P80C552IBA/08,512.pdf
- Description:
- IC MCU 8BIT ROMLESS 68PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:4,791
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Product details
Overview
P80C552IBA/08,512 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 (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 24 MHz in industrial temperature range (0 °C to +70 °C) and targets embedded motor control, sensor interface, and industrial I/O subsystems.
For engineers reviewing the P80C552IBA/08,512 datasheet, P80C552IBA/08,512 pinout, P80C552IBA/08,512 application, or P80C552IBA/08,512 equivalent, this page delivers verified technical context, package-specific pin functions, real-world use scenarios, and validated alternative options for legacy 80C51-based designs requiring analog acquisition, PWM generation, and dual-serial connectivity.
Technical Context
The P80C552IBA/08,512 implements an enhanced 80C51 CPU with identical instruction set compatibility, extended by a dedicated 16-bit timer T2 supporting capture latching on rising/falling edges of CT0I–CT3I inputs and compare-triggered outputs (CMSR0–CMSR5, CMT0/CMT1). Its analog subsystem integrates a 10-bit successive-approximation ADC with programmable sampling time (8tCY) and conversion time (50tCY), referenced to AVREF± pins.
Dual PWM outputs (PWM0/PWM1) are generated via timer-controlled duty-cycle modulation, while serial communication includes full-duplex UART (RxD/TxD) and byte-oriented I²C master/slave (SCL/SDA) with configurable clock rates up to 400 kHz (at 24 MHz fOSC). Power management supports 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 architecture with 100+ instructions; 58% executed in 0.5 µs at 24 MHz. |
| Max Clock Frequency | 24 MHz - enables 0.5 µs minimum instruction cycle for time-critical control loops. |
| ADC Resolution | 10-bit - provides 1024 discrete levels for precision analog sensing (e.g., temperature, voltage monitoring). |
| PWM Outputs | Two independent 8-bit PWM channels (PWM0/PWM1) - support motor speed control or LED dimming with 256-step resolution. |
| Timer Resources | Three 16-bit timers: two standard (T0/T1), one enhanced (T2) with four capture latches and three compare registers - enables precise event timing and pulse-width measurement. |
| Serial Interfaces | UART (RxD/TxD) + I²C-bus (SCL/SDA) - allows concurrent host communication and peripheral sensor bus integration. |
| Operating Temperature | 0 °C to +70 °C - qualified for commercial and industrial ambient environments without derating. |
| Supply Current | 55 mA at 24 MHz operating; 12.5 mA in idle mode - balances performance and low-power operation. |
Pinout & Package
Package: Plastic Leaded Chip Carrier (PLCC), 68-pin, SOT188-2 footprint. Pin assignments conform to Philips SOT188-2 mechanical drawing and electrical function mapping per datasheet revision 2002 Sep 03.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RST | Reset input/output | Active-high reset input; outputs reset pulse on T3 overflow - enables reliable system initialization and watchdog recovery. |
| XTAL1 / XTAL2 | Oscillator input/output | Drive internal inverting amplifier; supports crystal (1–24 MHz) or external clock - sets core timing reference. |
| P0.0–P0.7 | Multiplexed address/data bus | Open-drain I/O with strong pull-ups; serves as AD0–AD7 and A0–A7 during external memory access - enables 64 kB expansion. |
| P1.0–P1.3 | Capture timer inputs | CT0I–CT3I - accept external event edges for timestamping and pulse-width capture on T2. |
| P1.4 / P1.5 | T2 event input / reset | T2 (P1.4) triggers T2 count on rising edge; RT2 (P1.5) resets T2 on rising edge - supports quadrature decoding and gated timing. |
| P1.6 / P1.7 | I²C clock/data | SCL/SDA - implement open-drain bidirectional I²C-bus with 0.7VDD high-threshold - compliant with standard I²C protocol. |
| P3.0 / P3.1 | UART I/O | RxD/TxD - full-duplex asynchronous serial interface compatible with 80C51 UART register map. |
| P4.0–P4.5 | Compare-set outputs | CMSR0–CMSR5 - drive high/low on T2 match - used for synchronized digital waveform generation or relay control. |
| P4.6 / P4.7 | Compare-toggle outputs | CMT0/CMT1 - toggle state on T2 match - generate square waves or edge-triggered signals without software overhead. |
| P5.0–P5.7 | Analog inputs | ADC0–ADC7 - eight single-ended analog channels referenced to AVREF± - support multiplexed sensor acquisition. |
| PWM0 / PWM1 | Pulse-width modulated outputs | Dedicated hardware PWM pins - generate variable-duty-cycle signals for motor drivers or power converters. |
| STADC | ADC start trigger | Hardware start signal for ADC conversion - enables precise synchronization with external events or timers. |
| EW | Watchdog enable | Enables T3 watchdog timer and disables power-down mode - critical for fail-safe system recovery. |
| EA / ALE / PSEN | External memory control | EA selects internal/external program memory; ALE latches address low-byte; PSEN enables external ROM read - supports hybrid memory systems. |
| VDD / VSS / AVDD / AVSS | Power domains | Digital (VDD/VSS) and analog (AVDD/AVSS) supplies - separate rails minimize noise coupling into ADC path. |
Key Features
| Feature | Design Value |
|---|---|
| ROMless 80C51 architecture | Enables in-system programming via external EPROM or flash; eliminates mask-ROM NRE cost and lead time. |
| 10-bit ADC with 8-channel mux | Supports simultaneous multi-sensor monitoring (e.g., temperature, pressure, current) with ±2 LSB integral non-linearity. |
| Dual 8-bit PWM outputs | Generates independent duty-cycle waveforms for driving H-bridge MOSFETs or dimming arrays without CPU intervention. |
| 16-bit capture/compare timer T2 | Four capture latches record event timestamps; three compare registers trigger outputs or interrupts - ideal for encoder position tracking. |
| I²C-bus + UART dual serial | Allows concurrent communication with smart sensors (I²C) and host controllers (UART) - reduces external logic and PCB complexity. |
| Idle and power-down modes | Idle mode cuts CPU current to 12.5 mA while preserving RAM and peripherals; power-down draws only 50 µA - extends battery life in portable devices. |
Applications
| Motor Control Subsystem | Sensor Data Acquisition Node |
|---|---|
|
Use Scenario: Controlling brushed DC motor speed and direction in HVAC blower modules using H-bridge drivers. IC Role / Device Role / Timing Role: P80C552IBA/08,512 generates complementary PWM0/PWM1 signals, reads back current sense ADC0, and monitors thermal sensor ADC1 via I²C. Use Value: Hardware PWM and capture timer eliminate software timing jitter; 10-bit ADC resolves <1°C temperature changes for closed-loop thermal protection. |
Use Scenario: Collecting analog data from eight industrial sensors (pressure, humidity, voltage) and transmitting via UART to PLC. IC Role / Device Role / Timing Role: P80C552IBA/08,512 sequences ADC0–ADC7 conversions triggered by STADC, stores results in internal RAM, and streams via UART at 115.2 kbps. Use Value: On-chip 256 × 8 RAM buffers full 8-channel scan; 10-bit resolution captures 0.1% FS sensor variations without external ADC. |
| Industrial I/O Expansion Module | Legacy System Upgrade Controller |
|
Use Scenario: Adding isolated digital I/O and analog monitoring to legacy 80C51-based PLC racks via parallel bus interface. IC Role / Device Role / Timing Role: P80C552IBA/08,512 acts as intelligent I/O slave: accepts commands via P0/P2/P3, executes local logic, reports status via CMSR outputs and ADC readings. Use Value: PLCC package fits existing socket footprints; identical instruction set ensures drop-in firmware reuse; dual serial ports enable diagnostics and field updates. |
Use Scenario: Replacing obsolete 80C51 variants in automotive body control units where higher ADC resolution and PWM capability are required. IC Role / Device Role / Timing Role: P80C552IBA/08,512 replaces legacy MCU while retaining same PCB layout, executing original firmware with minor ISR updates for T2 capture and ADC handling. Use Value: 24 MHz operation accelerates polling loops; 10-bit ADC eliminates need for external precision ADC; I²C interface adds new door-lock sensor support. |
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, 32 kB Flash, no integrated ADC or PWM; requires external DAC/PWM IC for analog output. | Lacks native 10-bit ADC and dual PWM - unsuitable for sensor-to-actuator closed-loop control without added components. | Select when firmware flexibility and reprogrammability outweigh integrated analog/peripheral needs. |
| ST7FLITE09Y0M6 | 8-bit ST7 core, 8 kB Flash, 10-bit ADC (8 ch), 2× PWM, but no I²C; UART only. | No I²C-bus support - cannot interface with common I²C temperature/humidity sensors without bit-banging or external bridge. | Choose for cost-sensitive, UART-only sensor nodes where I²C is not required and ST7 toolchain is established. |
Compared with AT89C51RC2-UM and ST7FLITE09Y0M6, the P80C552IBA/08,512 uniquely combines 80C51 software compatibility, hardware PWM, 10-bit ADC, and dual serial (I²C + UART) in a single PLCC package - making it optimal for retrofitting legacy 80C51 systems needing enhanced analog control without architectural change.
Availability
P80C552IBA/08,512 is available at Aetrix Electronics and suitable for industrial motor control, sensor data acquisition, and legacy 80C51 system upgrades requiring stable component supply and long-term obsolescence mitigation.
Supply support for P80C552IBA/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
Philips Semiconductors (now NXP Semiconductors) is a pioneer in mixed-signal microcontrollers, delivering robust, automotive-qualified ICs with emphasis on reliability and long-term support.
The 80C552 product line was designed specifically for industrial embedded applications demanding integrated analog acquisition, deterministic PWM, and dual-serial connectivity - extending the 80C51 ecosystem with minimal software migration effort.
FAQ
What is the maximum operating frequency supported by the P80C552IBA/08,512?
The P80C552IBA/08,512 supports a maximum oscillator frequency of 24 MHz, enabling a 0.5 µs minimum instruction execution time. This specification is confirmed in the "DEVICE SPECIFICATIONS" table (page 9) and AC Electrical Characteristics for the 24 MHz version (page 14), with guaranteed operation across the 0 °C to +70 °C temperature range.
Does the P80C552IBA/08,512 include on-chip program memory?
No, the P80C552IBA/08,512 is the ROMless variant of the 8XC552 family. As stated in the "DESCRIPTION" section (page 2), it lacks internal program memory and requires external code storage (e.g., EPROM or Flash) accessed via the P0/P2/P3 bus. This distinguishes it from the P83C552xxx mask-ROM version.
How many analog input channels does the P80C552IBA/08,512 ADC support?
The P80C552IBA/08,512 features an 8-channel, 10-bit successive-approximation ADC mapped to Port 5 pins P5.0 through P5.7 (ADC0–ADC7), as documented in the "PIN DESCRIPTION" (page 7) and "FEATURES" list (page 2). All eight channels are single-ended and share the same AVREF± reference inputs.
Can the P80C552IBA/08,512 operate in low-power modes?
Yes, the P80C552IBA/08,512 supports two software-selectable low-power modes: idle mode (CPU halted, RAM/timers/serial/interrupts active; 12.5 mA at 24 MHz) and power-down mode (oscillator stopped, RAM retained; 50 µA). These are controlled via the PCON register and detailed in the "IDLE MODE" and "POWER-DOWN MODE" sections (pages 8–9).
What serial communication interfaces are integrated into the P80C552IBA/08,512?
The P80C552IBA/08,512 integrates two independent serial interfaces: a full-duplex UART (RxD/TxD on P3.0/P3.1) compatible with the standard 80C51 UART, and an I²C-bus interface (SCL/SDA on P1.6/P1.7) supporting both master and slave byte-oriented operations - as specified in the "FEATURES" list (page 2) and "PIN DESCRIPTION" (page 7).
P80C552IBA/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:
- 24MHz
- 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
P80C552IBA/08,512 FAQ
1.How can I place an order for P80C552IBA/08,512 through Aetrix?
Please submit a Request for Quotation (RFQ) for P80C552IBA/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 P80C552IBA/08,512 reliable?
The price and inventory of P80C552IBA/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 P80C552IBA/08,512 is usually 5 days.
3.What payment methods are accepted for P80C552IBA/08,512?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P80C552IBA/08,512 transactions.
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4.How is shipping managed for P80C552IBA/08,512?
P80C552IBA/08,512 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P80C552IBA/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 P80C552IBA/08,512?
For technical support, including P80C552IBA/08,512 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P80C552IBA/08,512 requirements.
6.How does Aetrix verify that P80C552IBA/08,512 is sourced from the original manufacturer or authorized distributors?
All P80C552IBA/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 P80C552IBA/08,512 meets industry standards.
7.What is the process for return or replacement of P80C552IBA/08,512?
All P80C552IBA/08,512 units undergo pre-shipment inspection (PSI). If there is an issue with P80C552IBA/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 P80C552IBA/08,512 part is unused and in its original packaging.
Return procedure for P80C552IBA/08,512:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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