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NXP Semiconductors P89LPC954FA,529
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- Part No.:
- P89LPC954FA,529
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 44-LCC (J-Lead)
- Datasheet:
-
P89LPC954FA,529.pdf
- Description:
- IC MCU 8BIT 16KB FLASH 44PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:1,307
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Product details
Overview
P89LPC954FA,529 from NXP Semiconductors is an 8-bit accelerated 2-clock 80C51 microcontroller in PLCC44 package, featuring 16 kB byte-erasable flash memory, 10-bit ADC with window comparator, dual UARTs with fractional baud rate generator, and 40 I/O pins. It operates from 2.4 V to 3.6 V with 5 V-tolerant I/O and supports industrial temperature range (−40 °C to +85 °C), enabling compact embedded control in power-constrained sensor interfaces and industrial HMI systems.
For engineers reviewing the P89LPC954FA,529 datasheet, P89LPC954FA,529 pinout, P89LPC954FA,529 application, or P89LPC954FA,529 equivalent, key selection considerations include its 16 kB flash capacity, dual enhanced UARTs with break detection, 8-input 10-bit ADC with analog comparators, internal RC oscillator with clock doubler, and high-current sourcing capability on Port 5 for direct LED or relay drive.
Technical Context
The P89LPC954FA,529 executes instructions in two to four clocks-six times faster than standard 80C51 at same frequency-enabling 111 ns to 222 ns instruction cycles at 18 MHz. Its architecture integrates a 23-bit system timer usable as RTC, two 16-bit counter/timers configurable as PWM outputs or port toggles, and programmable slew-rate outputs to reduce EMI.
It includes two analog comparators with selectable inputs and reference, a window comparator for ADC results, and eight keypad interrupt inputs plus two external interrupts. The device supports In-Application Programming (IAP) of flash memory, serial ISP/ICP, and configurable port output modes (quasi-bidirectional, open-drain, push-pull).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | Accelerated 2-clock 80C51 CPU delivering 6× performance vs. standard 80C51 at same clock frequency. |
| Flash Memory | 16 kB byte-erasable flash organized into 1 kB sectors and 64-byte pages; enables non-volatile data storage without external EEPROM. |
| ADC | 8-channel 10-bit ADC with window comparator generating interrupt on in/out-of-range result; supports real-time threshold monitoring. |
| Communication Interfaces | Dual enhanced UARTs (fractional baud rate, break detect, auto-address), 400 kHz I²C, and SPI; enables multi-protocol connectivity in space-constrained designs. |
| Operating Voltage | 2.4 V to 3.6 V supply with 5 V-tolerant I/O pins; eliminates level-shifting for mixed-voltage peripheral interfacing. |
| Power Modes | Idle and two power-down modes; typical total power-down current is 1 µA (with voltage comparators disabled), supporting battery-powered operation. |
| Oscillator Options | Configurable on-chip RC oscillator (20 kHz–18 MHz) with clock doubler and fast switching to external crystal; reduces BOM count and startup time. |
Pinout & Package
Package: PLCC44 (plastic leaded chip carrier; 44 leads; SOT187-2). Dimensions: body size 16.59 mm × 16.59 mm × 4.57 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0.0/CMP2/KBI0/AD05 | Port 0 bit 0 / Comparator 2 output / Keypad input 0 / ADC0 channel 5 input | Multi-function pin supporting analog sensing, digital input, and comparator output; Schmitt-triggered for noise immunity. |
| P1.5/RST | Port 1 bit 5 / External reset input/output | Programmable reset pin supporting open-drain bidirectional, push-pull output, or input-only mode; required for ISP entry above 12 MHz. |
| P2.2/MOSI | Port 2 bit 2 / SPI master out slave in | Configurable as GPIO or SPI data output; active when SPI configured as master; supports full-duplex synchronous communication. |
| P3.0/XTAL2/CLKOUT | Port 3 bit 0 / Crystal oscillator output / CPU clock divided-by-2 | Provides oscillator feedback path or buffered system clock output; usable with internal RC or watchdog oscillator sources. |
| P5.0–P5.7 | Port 5 bits 0–7 | All pins support 20 mA high-current sourcing/sinking; suitable for direct driving of LEDs, relays, or small solenoids without external drivers. |
Key Features
| Feature | Design Value |
|---|---|
| In-Application Programming (IAP) | Enables firmware updates while running; allows dynamic code modification without halting system operation. |
| Programmable slew-rate outputs | ~10 ns minimum ramp time on all port outputs; reduces electromagnetic interference in noisy industrial environments. |
| Four interrupt priority levels | Supports deterministic real-time response for time-critical tasks such as ADC sampling or UART receive overflow handling. |
| On-chip power-on reset & brownout detect | Eliminates need for external reset IC; brownout detection can be configured as interrupt for graceful shutdown before supply collapse. |
| Port input pattern match detect | Port 0 generates interrupt when pin values match or mismatch a user-defined 8-bit pattern; enables efficient keypad scanning or state-change detection. |
Applications
| Industrial Sensor Interface | Smart Metering Front-End |
|---|---|
Use Scenario: Monitoring temperature, pressure, and flow sensors in factory automation panels with local signal conditioning and alarm triggering. IC Role / Device Role / Timing Role: Central controller executing sensor acquisition via 10-bit ADC, processing thresholds using window comparator, and communicating alerts over UART/I²C. Use Value: Integrated ADC, comparators, and dual UARTs eliminate discrete signal chain components; 16 kB flash stores calibration tables and firmware for field-upgradable algorithms. | Use Scenario: Collecting and preprocessing energy consumption data in residential electricity meters before transmission to concentrator units. IC Role / Device Role / Timing Role: Real-time data acquisition engine using 23-bit system timer as RTC, managing time-stamped ADC samples and secure serial communication via I²C and UART. Use Value: Low-power power-down mode (1 µA) extends battery life in backup-supplied meters; 5 V-tolerant I/O simplifies interface with legacy metering peripherals. |
| Embedded HMI Controller | Industrial Keypad Terminal |
Use Scenario: Driving segmented LCDs and responding to tactile button presses in HVAC control panels and building management interfaces. IC Role / Device Role / Timing Role: User interface processor managing display refresh timing, debouncing mechanical switches, and coordinating UART-based host communication. Use Value: Eight dedicated keypad interrupt inputs (KBI0–KBI7) enable zero-CPU-overhead key detection; Port 5's 20 mA sourcing drives LCD backlights directly. | Use Scenario: Ruggedized operator terminals in manufacturing cells requiring reliable key entry, status indication, and RS-485 connectivity. IC Role / Device Role / Timing Role: Keypad scan controller with pattern-match interrupt on Port 0, UART1 for RS-485 transceiver interface, and watchdog timer for fault recovery. Use Value: Internal watchdog with separate on-chip oscillator ensures fail-safe reset during communication lockups; open-drain UART pins simplify RS-485 bus termination. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| P89LPC952FA | 8 kB flash (vs. 16 kB), otherwise identical architecture, pinout, and peripheral set. | Suitable for simpler firmware with smaller code footprint; lacks capacity for complex protocol stacks or large lookup tables. | Select when application firmware fits within 8 kB and cost sensitivity outweighs future scalability needs. |
| EFM8BB52F64G-A-QFP48 | Silicon Labs 8051-based MCU with 64 kB flash, 12-bit ADC, and USB interface; QFP48 package (not PLCC44). | Offers higher-resolution ADC and native USB, but requires PCB redesign due to different pinout and package. | Choose for new designs needing USB connectivity or enhanced analog precision; not drop-in compatible with P89LPC954FA,529. |
Compared with P89LPC952FA and EFM8BB52F64G-A-QFP48, the P89LPC954FA,529 delivers optimal balance of flash capacity, analog integration, and industrial-grade I/O drive strength in a mature, widely supported PLCC44 package-making it ideal for cost-sensitive, long-lifecycle industrial control upgrades.
Availability
P89LPC954FA,529 is available at Aetrix Electronics and suitable for industrial sensor interfaces, smart metering front-ends, and embedded HMI controllers requiring stable component supply across extended production cycles.
Supply support for P89LPC954FA,529 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 focused on secure connectivity solutions for automotive, industrial, and IoT applications.
The P89LPC954FA,529 belongs to NXP's LPC900 family of enhanced 80C51 microcontrollers, designed specifically for cost-sensitive, low-power industrial control and sensor node applications where flash flexibility, analog integration, and robust I/O drive are critical.
FAQ
What is the maximum operating frequency of the P89LPC954FA,529?
The P89LPC954FA,529 supports a maximum operating frequency of 18 MHz. This applies whether using the internal RC oscillator (with clock doubler enabled) or an external crystal/resonator connected to XTAL1/XTAL2. At 18 MHz, instruction cycle times range from 111 ns to 222 ns-six times faster than a standard 80C51 at the same clock rate. The device's flash configuration bits allow user-selectable oscillator frequency ranges from 20 kHz to 18 MHz.
Does the P89LPC954FA,529 support in-system programming (ISP)?
Yes, the P89LPC954FA,529 supports Serial Flash In-System Programming (ISP), allowing firmware updates while the device is mounted in the target application. ISP is initiated via the P1.5/RST pin during power-up with specific voltage conditions on XTAL1. The device also supports In-Application Programming (IAP), enabling code modification during runtime without halting execution-critical for field-upgradable firmware in deployed P89LPC954FA,529 systems.
How many analog input channels does the 10-bit ADC in the P89LPC954FA,529 support?
The P89LPC954FA,529 features an 8-input multiplexed 10-bit ADC (ADC0), with analog inputs mapped to P0.0–P0.7 (AD05–AD00), P1.7 (AD04), and P2.0–P2.1 (AD07–AD06), totaling eight dedicated channels. Each channel supports programmable sampling timing and window comparison, and the ADC can generate interrupts on in-range or out-of-range results-enabling autonomous threshold monitoring without CPU polling in P89LPC954FA,529 implementations.
What are the I/O drive capabilities of Port 5 on the P89LPC954FA,529?
All eight pins of Port 5 (P5.0–P5.7) on the P89LPC954FA,529 provide high-current sourcing and sinking capability of 20 mA per pin. This allows direct driving of LEDs, small relays, or logic-level MOSFET gates without external buffer circuitry. A maximum chip-wide current limit is specified in the datasheet to ensure thermal integrity. This feature makes Port 5 especially valuable in P89LPC954FA,529-based designs requiring minimal external components for actuator control.
Is the P89LPC954FA,529 pin-compatible with other members of the LPC95x family?
Yes, the P89LPC954FA,529 in PLCC44 package shares identical pinout and electrical characteristics with the P89LPC952FA (8 kB flash variant), enabling direct hardware compatibility. Both devices use the same SOT187-2 footprint, I/O mapping, and peripheral register layout. Firmware developed for one can typically run on the other with only flash size-aware linker adjustments-making the P89LPC954FA,529 a seamless upgrade path for existing P89LPC952FA designs requiring more code space.
P89LPC954FA,529 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 44-LCC (J-Lead)
- Series:
- LPC900
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- 8051
- Core Size:
- 8-Bit
- Speed:
- 18MHz
- Connectivity:
- I2C, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, POR, PWM, WDT
- Number of I/O:
- 40
- Program Memory Size:
- 16KB (16K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 512 x 8
- Voltage - Supply (Vcc/Vdd):
- 2.4V ~ 3.6V
- Data Converters:
- A/D 8x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
P89LPC954FA,529 FAQ
1.How can I place an order for P89LPC954FA,529 through Aetrix?
Please submit a Request for Quotation (RFQ) for P89LPC954FA,529 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 P89LPC954FA,529 reliable?
The price and inventory of P89LPC954FA,529 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P89LPC954FA,529 is usually 5 days.
3.What payment methods are accepted for P89LPC954FA,529?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P89LPC954FA,529 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P89LPC954FA,529?
P89LPC954FA,529 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P89LPC954FA,529 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 P89LPC954FA,529?
For technical support, including P89LPC954FA,529 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P89LPC954FA,529 requirements.
6.How does Aetrix verify that P89LPC954FA,529 is sourced from the original manufacturer or authorized distributors?
All P89LPC954FA,529 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 P89LPC954FA,529 meets industry standards.
7.What is the process for return or replacement of P89LPC954FA,529?
All P89LPC954FA,529 units undergo pre-shipment inspection (PSI). If there is an issue with P89LPC954FA,529, 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 P89LPC954FA,529 part is unused and in its original packaging.
Return procedure for P89LPC954FA,529:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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