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NXP Semiconductors P89LPC932A1FA,129
- Part No.:
- P89LPC932A1FA,129
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 28-LCC (J-Lead)
- Datasheet:
-
P89LPC932A1FA,129.pdf
- Description:
- IC MCU 8BIT 8KB FLASH 28PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:1,444
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Product details
Overview
P89LPC932A1FA,129 from NXP Semiconductors is an 8-bit accelerated two-clock 80C51 microcontroller with 8 kB byte-erasable flash, 512-byte on-chip data EEPROM, dual analog comparators, and 23-bit system timer/RTC functionality. It operates from 2.4 V to 3.6 V with 5 V-tolerant I/O, supports in-system programming (ISP), and targets low-cost embedded control in industrial sensors and power management modules.
For engineers reviewing the P89LPC932A1FA,129 datasheet, P89LPC932A1FA,129 pinout, P89LPC932A1FA,129 application, or P89LPC932A1FA,129 equivalent, key selection criteria include its 28-pin PLCC package, internal RC oscillator tuning capability, 23 I/O pins minimum, PWM-capable CCU unit, and brownout reset with interrupt option - all critical for space-constrained, low-power designs requiring firmware update flexibility.
Technical Context
The P89LPC932A1FA,129 implements a high-performance 80C51 core executing instructions in two to four clocks, achieving six times the throughput of standard 80C51 at the same frequency (e.g., 111–222 ns instruction cycle at 18 MHz). Its architecture integrates dedicated peripherals including a Capture/Compare Unit (CCU) supporting PWM generation, input capture, and output compare on four independent channels (OCA–OCD, ICA–ICB).
It features dual 16-bit counter/timers (Timer 0/1), a 23-bit system timer usable as RTC, enhanced UART with fractional baud rate generator and break detection, 400 kHz I²C-bus, and SPI interface. The device includes configurable port output modes (quasi-bidirectional, open-drain, push-pull), keypad interrupt support across Port 0, and Schmitt-trigger inputs on all I/O pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Accelerated two-clock 80C51; executes all instructions in 2–4 clocks, enabling 6× performance vs. legacy 80C51 at same clock frequency. |
| Flash Memory | 8 kB byte-erasable flash organized in 1 kB sectors and 64-byte pages; enables true non-volatile data storage without external EEPROM. |
| Data EEPROM | 512-byte on-chip data EEPROM; supports device serialization, calibration storage, and field-updatable configuration parameters. |
| RAM | 256-byte main RAM + 512-byte auxiliary on-chip RAM; provides sufficient working memory for real-time control loops and communication buffers. |
| Timers & RTC | Two 16-bit timers (T0/T1), one 23-bit system timer configurable as RTC; supports PWM, input capture, and overflow-triggered I/O toggling. |
| Analog Peripherals | Dual analog comparators with selectable inputs and reference source; enables threshold detection and simple ADC-free sensing applications. |
| I/O Voltage | 2.4 V to 3.6 V VDD operation; all I/O pins 5 V tolerant (up to 5.5 V), simplifying interface with legacy 5 V logic and sensors. |
Pinout & Package
Package: PLCC28 (plastic leaded chip carrier, 28 leads, SOT261-2). Pin count: 28 total, with 23–26 usable I/O depending on oscillator/reset configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0.0/CMP2/KBI0 | Port 0 bit 0 / Comparator 2 output / Keypad input 0 | Multi-function pin supporting analog comparison output, keyboard scanning, and general-purpose I/O with Schmitt trigger input. |
| P1.5/RST | Port 1 bit 5 / External reset input | Input-only pin used for active-low hardware reset; also initiates ISP mode during power-up when combined with specific voltage sequencing. |
| P2.6/OCA | Port 2 bit 6 / Output Compare A | Dedicated CCU channel output for precise PWM generation or timed pulse output synchronized to internal timer. |
| P3.0/XTAL2/CLKOUT | Port 3 bit 0 / Crystal oscillator output / CPU clock divided-by-2 | Provides oscillator feedback path or buffered half-speed CPU clock signal; usable as system clock source when internal RC oscillator is selected. |
| VDD | Power supply | Main 2.4–3.6 V supply rail; powers core, peripherals, and I/O; supports operation in Idle and Power-down modes. |
| VSS | Ground | 0 V reference for all digital and analog circuitry; requires low-impedance connection to minimize noise coupling into analog comparators. |
Key Features
| Feature | Design Value |
|---|---|
| In-System Programming (ISP) | Enables firmware updates via UART while mounted in end equipment, eliminating need for socketed programming and reducing production test overhead. |
| Byte-erasable Flash | Allows individual bytes of code memory to be erased and rewritten - essential for implementing wear-leveling or dynamic parameter tables in embedded applications. |
| Configurable Port Outputs | Each I/O pin supports quasi-bidirectional, open-drain, push-pull, or input-only modes - enabling direct LED drive (20 mA), I²C bus termination, and robust level-shifting interfaces. |
| Low-Power Modes | Idle and two Power-down modes with typical 1 µA current (total power-down); wake-up via LOW interrupt input or external event, ideal for battery-powered sensor nodes. |
| Oscillator Flexibility | Internal RC oscillator (tunable 20 kHz–18 MHz), crystal/resonator support, and oscillator fail detect using separate watchdog oscillator - eliminates external timing components in cost-sensitive designs. |
Applications
| Industrial Sensor Node | Smart Power Supply Monitor |
|---|---|
Use Scenario: Compact environmental sensor module measuring temperature/humidity with local threshold alerting and serial telemetry. IC Role / Device Role / Timing Role: Main controller executing sensor polling, comparator-based over-temperature detection, and UART/I²C data transmission. Use Value: Integrated 512-byte EEPROM stores calibration offsets; dual comparators eliminate external op-amps; 5 V-tolerant I/O interfaces directly with legacy sensor outputs. | Use Scenario: AC-DC adapter with real-time voltage/current monitoring, fault logging, and adaptive load regulation. IC Role / Device Role / Timing Role: System supervisor managing brownout detection, RTC-stamped fault events, and PWM-controlled feedback loop. Use Value: 23-bit system timer provides accurate time-stamping without external RTC; low-power modes extend standby runtime; internal RC oscillator reduces BOM count. |
| Keypad-Controlled Appliance UI | Embedded Motor Control Interface |
Use Scenario: Microwave oven control panel with 8-key matrix, display driver interface, and safety interlock monitoring. IC Role / Device Role / Timing Role: Dedicated UI processor handling keypad scan, LED backlight PWM, and safety-critical door switch validation. Use Value: Eight dedicated keypad interrupt inputs (KBI0–KBI7) on Port 0 enable zero-latency key response; programmable port match detection triggers interrupts on key press/release patterns. | Use Scenario: Small BLDC motor driver board requiring commutation timing, current sense conditioning, and serial configuration interface. IC Role / Device Role / Timing Role: Timing and interface co-processor generating complementary PWM signals (via OCA–OCD) and capturing hall sensor edges (via ICA/ICB). Use Value: CCU unit delivers four independent PWM/compare/capture channels synchronized to a single timer base; 20 mA LED drive supports status indicator integration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| P89LPC935FA,129 | 16 kB flash, 1 kB data EEPROM, additional 8-bit A/D converter, same PLCC28 package and pinout. | Required where analog sensor interfacing demands integrated ADC instead of comparator-only signal conditioning. | Select when higher code density or analog-to-digital conversion is needed; retains full software compatibility and identical footprint. |
| EFM8BB52F16G-A-QFP32 | Silicon Labs 8051-based MCU with 16 kB flash, 2.25 kB RAM, 12-bit ADC, and QFP32 package (32-pin, not pin-compatible). | Preferred for designs needing higher-resolution analog measurement, larger RAM buffer, or USB interface capability. | Choose for enhanced analog front-end and modern toolchain support; requires PCB redesign due to different pin count and layout. |
Compared with P89LPC932A1FA,129, the P89LPC935FA,129 offers expanded memory and integrated ADC while maintaining drop-in compatibility, whereas the EFM8BB52F16G-A-QFP32 provides superior analog performance and modern debug infrastructure at the cost of board-level redesign.
Availability
P89LPC932A1FA,129 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart power supply monitors, keypad-controlled appliance UIs, and embedded motor control interfaces requiring stable component supply and long-term manufacturing continuity.
Supply support for P89LPC932A1FA,129 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 company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT applications.
The P89LPC932A1FA,129 belongs to NXP's LPC900 family of enhanced 80C51 microcontrollers, designed specifically for cost-sensitive, space-constrained embedded control applications requiring high integration, low power, and flexible programming options.
FAQ
What is the maximum operating frequency of the P89LPC932A1FA,129?
The P89LPC932A1FA,129 supports a maximum CPU clock frequency of 18 MHz when using external crystal/resonator or internal RC oscillator. At this frequency, instruction cycle times range from 111 ns to 222 ns (excluding multiply/divide), delivering six times the performance of a standard 80C51 running at the same clock speed. The internal RC oscillator is factory-trimmed and user-tunable across 20 kHz to 18 MHz.
Does the P89LPC932A1FA,129 support in-application programming (IAP) of flash memory?
Yes, the P89LPC932A1FA,129 supports In-Application Programming (IAP) of its 8 kB flash code memory. This allows firmware updates or parameter changes while the application is running - critical for remote field upgrades and dynamic configuration. IAP is implemented via dedicated SFRs and requires proper sector protection management to prevent accidental erasure of active code.
How many I/O pins are available on the P89LPC932A1FA,129 in PLCC28 package?
The P89LPC932A1FA,129 in PLCC28 package provides 23–26 usable I/O pins depending on configuration. All 28 pins are functional: VDD and VSS are power rails; P1.5 is input-only (RST); remaining 26 pins are multi-function I/O. When using on-chip oscillator and reset options, up to 26 pins are available for general-purpose or peripheral use; otherwise, XTAL1/XTAL2 and RST reduce usable I/O to 23.
What communication interfaces does the P89LPC932A1FA,129 integrate?
The P89LPC932A1FA,129 integrates three synchronous serial interfaces: a UART with fractional baud rate generator and break detection, a 400 kHz I²C-bus port (SCL/SDA on P1.2/P1.3), and a full-duplex SPI port (MOSI/MISO/SPICLK/SS on P2.2–P2.5). All interfaces support both master and slave modes where applicable, and share common interrupt resources managed via IEN0/IEN1 SFRs.
Can the P89LPC932A1FA,129 operate without external oscillator components?
Yes, the P89LPC932A1FA,129 can operate without external oscillator components using its high-accuracy internal RC oscillator. This oscillator is selectable via flash configuration bits and fine-tunable through the TRIM register (including RCCLK bit), supporting frequencies from 20 kHz to 18 MHz. Oscillator fail detection is provided via the independent watchdog oscillator, ensuring safe fallback behavior if the primary clock source fails.
P89LPC932A1FA,129 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 28-LCC (J-Lead)
- Series:
- LPC900
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- 8051
- Core Size:
- 8-Bit
- Speed:
- 18MHz
- Connectivity:
- I2C, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, LED, POR, PWM, WDT
- Number of I/O:
- 26
- Program Memory Size:
- 8KB (8K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 768 x 8
- Voltage - Supply (Vcc/Vdd):
- 2.4V ~ 3.6V
- Data Converters:
- -
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
P89LPC932A1FA,129 FAQ
1.How can I place an order for P89LPC932A1FA,129 through Aetrix?
Please submit a Request for Quotation (RFQ) for P89LPC932A1FA,129 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 P89LPC932A1FA,129 reliable?
The price and inventory of P89LPC932A1FA,129 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P89LPC932A1FA,129 is usually 5 days.
3.What payment methods are accepted for P89LPC932A1FA,129?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P89LPC932A1FA,129 transactions.
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4.How is shipping managed for P89LPC932A1FA,129?
P89LPC932A1FA,129 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P89LPC932A1FA,129 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 P89LPC932A1FA,129?
For technical support, including P89LPC932A1FA,129 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P89LPC932A1FA,129 requirements.
6.How does Aetrix verify that P89LPC932A1FA,129 is sourced from the original manufacturer or authorized distributors?
All P89LPC932A1FA,129 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 P89LPC932A1FA,129 meets industry standards.
7.What is the process for return or replacement of P89LPC932A1FA,129?
All P89LPC932A1FA,129 units undergo pre-shipment inspection (PSI). If there is an issue with P89LPC932A1FA,129, 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 P89LPC932A1FA,129 part is unused and in its original packaging.
Return procedure for P89LPC932A1FA,129:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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