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NXP Semiconductors P89LPC9321FDH,512
- Part No.:
- P89LPC9321FDH,512
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 28-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
P89LPC9321FDH,512.pdf
- Description:
- IC MCU 8BIT 8KB FLASH 28TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,408
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Product details
Overview
P89LPC9321FDH,512 from NXP Semiconductors is an 8-bit accelerated two-clock 80C51 microcontroller in TSSOP28 package, featuring 8 kB byte-erasable flash, 512-byte on-chip data EEPROM, dual analog comparators with programmable gain amplifier, and 23-bit real-time clock system timer. It operates from 2.4 V to 3.6 V with 5 V-tolerant I/Os and supports low-power operation down to 1 μA in total power-down mode - used in industrial sensor nodes requiring compact, low-cost embedded control with non-volatile parameter storage.
For engineers reviewing the P89LPC9321FDH,512 datasheet, P89LPC9321FDH,512 pinout, P89LPC9321FDH,512 application, or P89LPC9321FDH,512 equivalent, key selection criteria include its 28-pin TSSOP footprint, 23 I/O capability with keypad interrupt support, fractional baud rate UART, and integrated 512-byte EEPROM for device serialization - critical for production coding, field calibration, and secure firmware updates.
Technical Context
The P89LPC9321FDH,512 implements a high-performance 80C51 core executing instructions in two to four clocks at up to 18 MHz, delivering six times the throughput of standard 80C51 devices. Its architecture integrates a Capture/Compare Unit (CCU) supporting PWM generation, input capture, and output compare functions across four channels (OCA–OCD, ICA–ICB), plus dual 16-bit counter/timers and a dedicated 23-bit system timer with 7-bit prescaler and readable 16-bit register.
On-chip peripherals include a 400 kHz I²C-bus interface, SPI port with master/slave modes, enhanced UART with break detection and automatic address recognition, and two analog comparators with selectable inputs and reference source - all configurable via SFRs such as CCCRA–CCCRD, CMP1/CMP2, and SPCTL without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | Accelerated two-clock 80C51 CPU; executes all instructions in 2–4 clocks at 18 MHz (111–222 ns cycle time). |
| Flash Memory | 8 kB byte-erasable flash organized in 1 kB sectors and 64-byte pages; enables single-byte non-volatile data storage. |
| Data Storage | 512-byte on-chip customer data EEPROM for device serialization, calibration constants, and setup parameters. |
| Analog Peripherals | Dual analog comparators with selectable inputs and reference; single PGA with gains of 2×, 4×, 8×, or 16× applied to comparator inputs. |
| Timers & RTC | Two 16-bit counter/timers + 23-bit system timer (7-bit prescaler + 16-bit readable register) usable as real-time clock. |
| I/O & Power | 23–26 I/O pins in TSSOP28; 2.4 V–3.6 V VDD; 5 V-tolerant I/Os; 1 μA typical power-down current with voltage comparators disabled. |
| Communication | Enhanced UART (fractional baud rate, break detect), 400 kHz I²C-bus, and full-duplex SPI with programmable clock polarity and phase. |
Pinout & Package
Package: TSSOP28 (SOT361-1), 4.4 mm body width, 28-lead plastic thin shrink small outline package.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0.0/CMP2/KBI0 | Port 0 bit 0 / Comparator 2 output / Keypad input 0 | Configurable I/O with Schmitt trigger; supports analog comparator output and 8-key matrix scanning. |
| P1.5/RST | Port 1 bit 5 / External reset input | Input-only pin; LOW resets MCU and forces ISP mode during power-on sequence. |
| P2.6/OCA | Port 2 bit 6 / Output Compare A | CCU channel A output; generates precise PWM or toggle-on-overflow signals independent of CPU load. |
| P3.0/XTAL2/CLKOUT | Port 3 bit 0 / Crystal oscillator output / CPU clock divided-by-2 | Supports crystal/resonator or internal RC oscillator; CLKOUT enables external clock monitoring or synchronization. |
| VDD (Pin 21) | Power supply | Primary 2.4–3.6 V supply rail; powers core, peripherals, and I/O; supports idle and power-down modes. |
| VSS (Pin 7) | Ground reference | 0 V return path for all digital and analog circuitry; required for stable operation and EMI control. |
Key Features
| Feature | Design Value |
|---|---|
| In-Application Programming (IAP) | Enables runtime flash code updates without halting execution - essential for over-the-air firmware patches in deployed systems. |
| Programmable Port Output Modes | Each I/O supports quasi-bidirectional, open-drain, push-pull, or input-only configuration - simplifies interface to diverse loads (LEDs, relays, I²C buses). |
| Keypad Interrupt Pattern Match | Port 0 detects match/non-match against programmable 8-bit pattern - reduces polling overhead in HMI applications with up to 8 keys. |
| Controlled Slew Rate Outputs | ~10 ns minimum ramp time on all outputs - minimizes EMI emissions and signal integrity issues in dense PCB layouts. |
| Four Interrupt Priority Levels | Hardware-enforced priority hierarchy allows deterministic response to time-critical events (e.g., analog comparator triggers vs. UART RX). |
Applications
| Industrial Sensor Node | Smart Meter Interface |
|---|---|
Use Scenario: Compact environmental monitor measuring temperature/humidity with local calibration and wireless telemetry. IC Role / Device Role / Timing Role: Primary controller managing ADC sampling, EEPROM-stored compensation coefficients, and UART/I²C communication to RF module. Use Value: Integrated 512-byte EEPROM eliminates external serial EEPROM; 23-bit RTC enables accurate timestamping without external crystal; low 1 μA power-down extends battery life. | Use Scenario: Energy meter front-end handling pulse counting, tamper detection, and secure parameter storage. IC Role / Device Role / Timing Role: Embedded controller interfacing to metrology IC via SPI, storing tariff schedules and event logs in on-chip EEPROM. Use Value: Dual analog comparators detect zero-crossing and overvoltage events; high-current I/O (20 mA) drives LED indicators directly; flash security bits prevent firmware extraction. |
| Home Appliance Control | Low-Power IoT Edge Node |
Use Scenario: Washing machine mainboard controlling motor drivers, water valves, and user interface. IC Role / Device Role / Timing Role: Real-time coordinator using CCU for motor PWM, UART for display updates, and keypad interrupts for button press detection. Use Value: 23 I/O pins support direct connection to sensors, actuators, and UI; programmable slew rate reduces conducted EMI; 4-level brownout detection ensures graceful shutdown during line dips. | Use Scenario: Battery-powered asset tracker logging GPS position and motion events before periodic BLE transmission. IC Role / Device Role / Timing Role: System-on-chip managing accelerometer wake-up, RTC-triggered sampling, and flash-based event buffering. Use Value: Total power-down current of 1 μA enables multi-year battery life; IAP allows remote firmware updates; 8 kB flash accommodates bootloader + application + OTA image. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| P89LPC9351FDH,512 | Same core and package but with 16 kB flash, 1 kB EEPROM, and additional 16-bit timer; no change in I/O count or peripheral set. | Required when larger program memory or extended data logging capacity is needed beyond 8 kB/512 B limits. | Select if future firmware growth or extended calibration tables demand more non-volatile storage. |
| EFM8BB52F16G-A-QFP32 | Silicon Labs 8051-based MCU in QFP32; 16 kB flash, 2.25 kB RAM, 12-bit ADC, but no on-chip EEPROM or PGA; requires external timing components. | Suitable for designs needing higher-resolution analog acquisition or deeper RAM buffers, but adds BOM cost and layout complexity. | Choose only when ADC performance or RAM size outweighs benefits of integrated EEPROM and PGA in P89LPC9321FDH,512. |
Compared with P89LPC9321FDH,512, the P89LPC9351FDH,512 offers scalable memory while maintaining identical pinout and peripheral compatibility, whereas the EFM8BB52F16G-A-QFP32 trades integrated analog features for higher-resolution ADC and larger RAM - demanding redesign for EEPROM-dependent functionality.
Availability
P89LPC9321FDH,512 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart meter interfaces, and home appliance control systems requiring stable component supply, long-term lifecycle support, and consistent parametric performance across temperature ranges from −40 °C to +85 °C.
Supply support for P89LPC9321FDH,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
NXP Semiconductors is a global semiconductor leader focused on secure connectivity solutions for automotive, industrial, and IoT markets, with deep expertise in ARM and legacy 80C51 architectures.
The P89LPC9321FDH,512 belongs to NXP's LPC900 family of enhanced 80C51 microcontrollers designed for cost-sensitive, space-constrained embedded applications requiring integrated analog peripherals, low-power operation, and robust in-system programming capabilities.
FAQ
What is the maximum operating frequency of the P89LPC9321FDH,512?
The P89LPC9321FDH,512 supports a maximum operating frequency of 18 MHz when using external crystal or internal RC oscillator with clock doubler enabled. At this frequency, instruction cycle times range from 111 ns to 222 ns - six times faster than standard 80C51 devices running at the same clock rate. The P89LPC9321FDH,512 achieves this performance through its accelerated two-clock architecture.
Does the P89LPC9321FDH,512 include on-chip EEPROM for data storage?
Yes, the P89LPC9321FDH,512 integrates 512 bytes of customer data EEPROM on-chip, specifically intended for serialization, calibration parameter storage, and field-updatable configuration data. This eliminates the need for external serial EEPROM in many applications. The P89LPC9321FDH,512 supports read/write operations via dedicated SFRs (DEECON, DEEDAT, DEEADR) and includes error flags for write verification.
Can the P89LPC9321FDH,512 operate without external crystal components?
Yes, the P89LPC9321FDH,512 includes a high-accuracy internal RC oscillator with fine-tuning capability and optional clock doubler, enabling full operation without external crystal or resonator. The oscillator supports frequencies from 20 kHz to 18 MHz and can be selected via flash configuration bits. The P89LPC9321FDH,512 also supports dynamic switching between internal RC, watchdog oscillator, and external clock sources for optimized power/performance trade-offs.
How many I/O pins does the P89LPC9321FDH,512 provide in its TSSOP28 package?
The P89LPC9321FDH,512 in TSSOP28 package provides a minimum of 23 general-purpose I/O pins and up to 26 I/O pins when using on-chip oscillator and reset options. All port pins feature Schmitt trigger inputs and configurable output types (quasi-bidirectional, open-drain, push-pull, input-only). Eight I/O pins (P0.3–P0.7, P1.4, P1.6, P1.7) support 20 mA sourcing capability, while all others support 20 mA sinking.
What communication interfaces are supported by the P89LPC9321FDH,512?
The P89LPC9321FDH,512 supports three synchronous serial interfaces: a 400 kHz I²C-bus port (P1.2/SCL, P1.3/SDA), a full-duplex SPI port (P2.2/MOSI, P2.3/MISO, P2.4/SS, P2.5/SPICLK), and an enhanced UART with fractional baud rate generator, break detection, framing error detection, and automatic address recognition (P1.0/TXD, P1.1/RXD). The P89LPC9321FDH,512 does not include CAN or USB interfaces.
P89LPC9321FDH,512 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 28-TSSOP (0.173", 4.40mm Width)
- 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:
- 26
- Program Memory Size:
- 8KB (8K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 512 x 8
- RAM Size:
- 768 x 8
- Voltage - Supply (Vcc/Vdd):
- 2.4V ~ 3.6V
- Data Converters:
- -
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
P89LPC9321FDH,512 FAQ
1.How can I place an order for P89LPC9321FDH,512 through Aetrix?
Please submit a Request for Quotation (RFQ) for P89LPC9321FDH,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 P89LPC9321FDH,512 reliable?
The price and inventory of P89LPC9321FDH,512 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P89LPC9321FDH,512 is usually 5 days.
3.What payment methods are accepted for P89LPC9321FDH,512?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P89LPC9321FDH,512 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P89LPC9321FDH,512?
P89LPC9321FDH,512 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P89LPC9321FDH,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 P89LPC9321FDH,512?
For technical support, including P89LPC9321FDH,512 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P89LPC9321FDH,512 requirements.
6.How does Aetrix verify that P89LPC9321FDH,512 is sourced from the original manufacturer or authorized distributors?
All P89LPC9321FDH,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 P89LPC9321FDH,512 meets industry standards.
7.What is the process for return or replacement of P89LPC9321FDH,512?
All P89LPC9321FDH,512 units undergo pre-shipment inspection (PSI). If there is an issue with P89LPC9321FDH,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 P89LPC9321FDH,512 part is unused and in its original packaging.
Return procedure for P89LPC9321FDH,512:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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