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NXP Semiconductors P80C652EBA/04,518
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- Part No.:
- P80C652EBA/04,518
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 44-LCC (J-Lead)
- Datasheet:
-
P80C652EBA/04,518.pdf
- Description:
- IC MCU 8BIT ROMLESS 44PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:2,515
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Product details
Overview
P80C652EBA/04,518 from Philips Semiconductors is a ROMless 8-bit CMOS microcontroller derivative of the 80C51 family, featuring 256 × 8 RAM, four 8-bit I/O ports, two 16-bit timers, full-duplex UART, and I²C serial interface (SCL/SDA on P1.6/P1.7). It operates at up to 16 MHz with 0 to +70°C temperature range and supports external memory expansion up to 64 KB - used in industrial control panels requiring deterministic real-time I/O handling and serial bus interfacing.
For engineers reviewing the P80C652EBA/04,518 datasheet, P80C652EBA/04,518 pinout, P80C652EBA/04,518 application, or P80C652EBA/04,518 equivalent, key selection criteria include its PLCC-44 package, I²C master/slave capability, dual power modes (idle/power-down), TTL-compatible external bus interface, and absence of on-chip program memory requiring external EPROM or flash bootloading.
Technical Context
The P80C652EBA/04,518 implements an 80C51-compatible instruction set (100+ instructions) with identical timer/counter architecture and nested two-level interrupt structure. Its I²C subsystem uses P1.6 (SCL) and P1.7 (SDA) as open-drain pins without internal pull-ups, requiring external pull-resistors per I²C specification.
It supports external memory access via multiplexed Port 0 (AD0–AD7) and Port 2 (A8–A15), with ALE and PSEN signals for address latching and program store enable. The device enters idle mode (peripherals active, CPU halted) or power-down mode (oscillator stopped, RAM retained) via PCON register bits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 80C51-compatible 8-bit CPU with identical instruction timing and SFR layout |
| Memory | 256 × 8 bytes on-chip RAM; no internal ROM - requires external program memory |
| Max Clock Frequency | 16 MHz - enables 0.75 µs execution for 58% of instructions (at 16 MHz) |
| I/O Ports | Four 8-bit bidirectional ports: P0 (open-drain, AD0–AD7), P1 (SCL/SDA on P1.6/P1.7), P2 (A8–A15), P3 (UART, INT, T0/T1, RD/WR) |
| I²C Interface | Byte-oriented master/slave I²C-bus port using P1.6/SCL and P1.7/SDA with programmable clock rates up to 400 kHz (non-standard) |
| Power Modes | Idle mode (CPU halted, peripherals running, 6 mA @ 16 MHz) and power-down mode (oscillator off, RAM retained, 50 µA) |
| Operating Temperature | 0 to +70°C - validated for commercial-grade embedded control applications |
Pinout & Package
Package: Plastic Leaded Chip Carrier (PLCC), 44-pin, SOT187-2 footprint. Pin 1 corner marked with dot; pins numbered counterclockwise.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | NC | No connect - must remain unconnected per datasheet |
| 2–9 | P1.0–P1.5 / P1.6(SCL) / P1.7(SDA) | Port 1 I/O; P1.6/P1.7 are open-drain I²C lines requiring external pull-up resistors |
| 10 | RST | Active-high reset input; requires ≥2 machine cycles (24 oscillator periods) high pulse |
| 11,13–19 | P3.0(RxD)–P3.7(RD) | Port 3 with UART, interrupts, timers, and external memory strobes (RD/WR) |
| 22 | VSS | Ground reference - all VSS pins must be connected in QFP; PLCC has single VSS at pin 22 |
| 44 | VDD | 5.0 V ±10% supply - powers core, I/O, and internal oscillator |
| 32–39 | P0.0–P0.7(AD0–AD7) | Open-drain multiplexed address/data bus - requires external pull-ups for use as GPIO |
| 24–31 | P2.0–P2.7(A8–A15) | High-order address bus during external memory access; quasi-bidirectional I/O otherwise |
| 33 | ALE | Address Latch Enable - pulses at 1/6 oscillator frequency to latch P0 low byte |
| 32 | PSEN | Program Store Enable - active-low strobe for external program memory reads |
| 35 | EA | External Access - held LOW at reset to force execution from external memory only |
| 20,21 | XTAL2, XTAL1 | Oscillator output/input - supports crystal (3.5–16 MHz) or external clock drive |
Key Features
| Feature | Design Value |
|---|---|
| I²C Serial Port | Hardware-implemented master/slave I²C interface on dedicated P1.6/P1.7 pins with configurable clock rates and status registers (S1CON/S1STA) |
| Full-Duplex UART | Standard 80C51 UART on P3.0/RxD and P3.1/TxD supporting asynchronous serial communication with programmable baud rate |
| External Memory Interface | 16-bit address bus (P2 + P0) and 8-bit data bus (P0) with RD/WR strobes and ALE/PSEN controls - enables 64 KB program/data expansion |
| Two 16-Bit Timers | Timer 0 and Timer 1 identical to 80C51 - support event counting, baud rate generation, and gate-controlled timing |
| Low-Power Operation | Idle mode reduces current to 6 mA while preserving RAM and peripheral state; power-down mode draws only 50 µA with RAM retention |
Applications
| Industrial Sensor Hub | Legacy System Controller |
|---|---|
Use Scenario: Central node aggregating analog/digital sensor data (temperature, pressure, flow) via I²C and discrete inputs in factory-floor equipment. IC Role / Device Role / Timing Role: Main controller executing polling/interrupt-driven acquisition, preprocessing, and UART transmission to HMI or PLC. Use Value: On-chip I²C eliminates external bus controller; 256-byte RAM suffices for local buffering; PLCC-44 allows robust through-hole mounting in vibration-prone environments. | Use Scenario: Replacement MCU in aging industrial automation hardware originally designed for 80C51 derivatives, requiring pin- and code-compatible upgrade path. IC Role / Device Role / Timing Role: Drop-in functional replacement with identical instruction timing, SFR map, and external bus signaling. Use Value: Maintains legacy PCB layout and firmware binary compatibility while adding I²C for modern sensor integration without redesign. |
| Smart Power Meter Interface | Embedded Test Fixture Controller |
Use Scenario: Communicating with metrology ICs and display modules in utility-grade electricity meters using I²C and UART. IC Role / Device Role / Timing Role: Host processor managing time-critical metering data capture, tamper detection logic, and secure serial reporting. Use Value: Dual serial interfaces allow concurrent I²C sensor reads and UART telemetry upload; power-down mode extends battery life during standby intervals. | Use Scenario: Automated test system controlling relays, reading DUT outputs, and logging results via RS-232 in manufacturing QA stations. IC Role / Device Role / Timing Role: Real-time sequencer coordinating digital I/O, UART logging, and precise timing for stimulus/response validation. Use Value: Four 8-bit ports provide 32 GPIOs for relay drivers and signal monitoring; UART and timers enable synchronized test execution and timestamped result capture. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT89C51-24PI | 4 KB Flash ROM on-chip; no I²C; 24 MHz max; PDIP-40 package | Self-contained program storage eliminates external memory but lacks I²C bus support | Select when firmware size ≤4 KB and I²C is not required; requires PCB redesign due to different package and pinout |
| P87C51FA4B,518 | ROMless 80C51 variant with same PLCC-44 package and 16 MHz rating; no I²C interface | Matches P80C652EBA/04,518 footprint and memory model but omits I²C hardware | Choose if I²C is unnecessary and cost sensitivity favors simpler silicon; retains identical external bus and UART functionality |
Compared with AT89C51-24PI and P87C51FA4B,518, the P80C652EBA/04,518 uniquely delivers integrated I²C master/slave capability in a ROMless PLCC-44 package - enabling compact sensor interface designs without external bus controllers or package conversion.
Availability
P80C652EBA/04,518 is available at Aetrix Electronics and suitable for industrial sensor hubs, legacy system controllers, smart power meter interfaces, and embedded test fixture controllers requiring stable component supply across extended product lifecycles.
Supply support for P80C652EBA/04,518 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 Dutch semiconductor company founded in 1953, specializing in analog, logic, and microcontroller solutions for industrial and automotive markets.
The 80C652 product line was designed as an enhanced 80C51 derivative targeting industrial control systems needing I²C connectivity, external memory expansion, and robust packaging - bridging legacy 8051 ecosystems with modern serial sensor integration.
FAQ
What is the maximum operating frequency supported by the P80C652EBA/04,518?
The P80C652EBA/04,518 supports a maximum oscillator frequency of 16 MHz, validated across the 0 to +70°C commercial temperature range. At this frequency, 58% of instructions execute in 0.75 µs and 40% in 1.5 µs. The device is not rated for 24 MHz operation - that specification applies only to the 'IB' suffix variants like P80C652IBA.
Does the P80C652EBA/04,518 include on-chip program memory?
No, the P80C652EBA/04,518 is the ROMless version of the 80C652 family. It contains 256 × 8 bytes of on-chip RAM but no internal program memory. Execution must occur from external program memory (e.g., EPROM or Flash) accessed via Port 0, Port 2, PSEN, and EA control.
How is the I²C interface implemented on the P80C652EBA/04,518?
The P80C652EBA/04,518 implements a hardware I²C interface using P1.6 as SCL (serial clock) and P1.7 as SDA (serial data), both configured as open-drain outputs requiring external pull-up resistors. The interface supports master and slave modes with programmable clock rates and dedicated SFRs (S1CON, S1STA, S1ADR, S1DAT) for control and status.
What power-saving modes does the P80C652EBA/04,518 support?
The P80C652EBA/04,518 supports two low-power modes controlled via the PCON register: Idle mode halts the CPU while keeping peripherals (timers, UART, I²C) active (6 mA @ 16 MHz), and Power-down mode stops the oscillator entirely while retaining RAM contents (50 µA). Both modes are exited via hardware reset or enabled interrupts.
Which package type is used by the P80C652EBA/04,518?
The P80C652EBA/04,518 uses a Plastic Leaded Chip Carrier (PLCC) package with 44 pins, identified by Philips drawing number SOT187-2. This surface-mount package features a J-lead configuration and is distinct from the DIP (SOT129-1) and QFP (SOT307-2) variants in the same family.
P80C652EBA/04,518 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 44-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
- Number of I/O:
- 32
- Program Memory Size:
- -
- Program Memory Type:
- ROMless
- EEPROM Size:
- -
- RAM Size:
- 256 x 8
- Voltage - Supply (Vcc/Vdd):
- 4.5V ~ 5.5V
- Data Converters:
- -
- Oscillator Type:
- Internal
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
P80C652EBA/04,518 FAQ
1.How can I place an order for P80C652EBA/04,518 through Aetrix?
Please submit a Request for Quotation (RFQ) for P80C652EBA/04,518 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 P80C652EBA/04,518 reliable?
The price and inventory of P80C652EBA/04,518 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P80C652EBA/04,518 is usually 5 days.
3.What payment methods are accepted for P80C652EBA/04,518?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P80C652EBA/04,518 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P80C652EBA/04,518?
P80C652EBA/04,518 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P80C652EBA/04,518 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 P80C652EBA/04,518?
For technical support, including P80C652EBA/04,518 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P80C652EBA/04,518 requirements.
6.How does Aetrix verify that P80C652EBA/04,518 is sourced from the original manufacturer or authorized distributors?
All P80C652EBA/04,518 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 P80C652EBA/04,518 meets industry standards.
7.What is the process for return or replacement of P80C652EBA/04,518?
All P80C652EBA/04,518 units undergo pre-shipment inspection (PSI). If there is an issue with P80C652EBA/04,518, 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 P80C652EBA/04,518 part is unused and in its original packaging.
Return procedure for P80C652EBA/04,518:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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