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NXP Semiconductors P89C662HFA/00,512
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- Part No.:
- P89C662HFA/00,512
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 44-LCC (J-Lead)
- Datasheet:
-
P89C662HFA/00,512.pdf
- Description:
- IC MCU 8BIT 32KB FLASH 44PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:2,165
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Product details
Overview
P89C662HFA/00,512 from NXP Semiconductors (formerly Philips) is a single-chip 8-bit Flash microcontroller based on the 80C51 architecture, featuring 32 KB ISP/IAP Flash program memory, 1 KB on-chip RAM, and operation up to 20 MHz in 6-clock mode. It integrates four 8-bit I/O ports, three 16-bit timers, an enhanced UART with framing error detection and automatic address recognition, and a Programmable Counter Array (PCA) supporting PWM and capture/compare functions - deployed in industrial motor control and embedded IPMI systems.
For engineers reviewing the P89C662HFA/00,512 datasheet, P89C662HFA/00,512 pinout, P89C662HFA/00,512 application, or P89C662HFA/00,512 equivalent, this page delivers verified technical context, validated package mapping (PLCC-44), confirmed pin functions including PCA-capable I/Os (P1.3–P1.7, P3.4–P3.5), real-world use-value metrics (e.g., 6-clock-cycle execution for 40 MHz-equivalent throughput), and two field-validated alternative parts with documented functional and application-level differences.
Technical Context
The P89C662HFA/00,512 implements a static CMOS 80C51-compatible CPU core with dual clock modes: default 6-clock-per-machine-cycle (enabling 20 MHz operation at 40 MHz-equivalent performance) and optional factory-configured 12-clock mode (up to 33 MHz). Its Flash memory supports both In-System Programming (ISP) via UART boot loader and In-Application Programming (IAP) using ROM-resident routines - enabling remote firmware updates without external programmers.
Hardware peripherals include a full-duplex enhanced UART with framing error detection and automatic address recognition, four priority-level nested interrupts with eight sources, and a five-channel PCA supporting PWM generation, edge-capture, and time-stamp comparison. The I²C interface operates on open-drain P1.6/SCL and P1.7/SDA pins, requiring external pull-ups, and complies fully with standard I²C bus timing and arbitration requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 80C51-compatible 8-bit CPU with 100% instruction- and timing-compatible ISA |
| Flash Memory | 32 KB ISP/IAP Flash - enables field firmware updates via UART without external programmer |
| RAM | 1 KB on-chip SRAM - sufficient for real-time control stacks and small data buffers |
| Clock Modes | 6-clock (default, 20 MHz max) or 12-clock (optional, 33 MHz max) - selectable at programming time |
| Operating Voltage | 4.75–5.25 V - optimized for stable 5 V industrial power rails with ±2.5% tolerance |
| I/O Pins | 32 configurable I/O pins across Ports 0–3 - includes dedicated PCA channels and I²C pins |
| Timers & Counters | Three 16-bit timers + five-channel PCA - supports simultaneous PWM, input capture, and baud-rate generation |
Pinout & Package
Package: Plastic Leaded Chip Carrier (PLCC), 44-pin, SOT187-2 footprint, -40°C to +85°C industrial temperature range.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1.3/CEX0 | PCA Channel 0 I/O | Capture/compare input/output for timer-based pulse-width modulation or event timing |
| P1.4/CEX1 | PCA Channel 1 I/O | Dedicated hardware channel for independent PWM or input-capture function |
| P1.5/CEX2 | PCA Channel 2 I/O | Third PCA channel supporting synchronized multi-phase motor control signals |
| P1.6/SCL | I²C Clock Line | Open-drain output requiring external pull-up; used for synchronous serial communication with sensors/peripherals |
| P1.7/SDA | I²C Data Line | Open-drain bidirectional line; shares port latch with P1.6 for full I²C bus implementation |
| P3.4/T0/CEX3 | Timer 0 Input / PCA Channel 3 | Shared function allows either legacy 8051 timer input or additional PCA channel |
| P3.5/T1/CEX4 | Timer 1 Input / PCA Channel 4 | Enables five independent PCA channels while retaining backward compatibility with T0/T1 |
| XTAL1, XTAL2 | Oscillator Inputs | Support crystal (1–20 MHz) or external clock source; internal inverting amplifier eliminates need for external oscillator circuit |
Key Features
| Feature | Design Value |
|---|---|
| In-Application Programming (IAP) | Enables firmware self-update during runtime using ROM-resident Flash routines - critical for remote diagnostics and over-the-air updates |
| Programmable Counter Array (PCA) | Five independent channels support simultaneous PWM generation, input capture, and high-resolution time-stamping - essential for motor phase control |
| Enhanced UART | Framing error detection and automatic address recognition allow robust multi-drop RS-485 communication without software overhead |
| I²C Serial Interface | Full hardware I²C master/slave support on P1.6/P1.7 - reduces CPU load for sensor interfacing and peripheral configuration |
| Low-Power Operation | Idle and Power-Down modes retain RAM/SFR contents down to 2.0 V - extends battery life in portable industrial tools |
Applications
| Industrial Motor Control | IPMI Baseboard Management |
|---|---|
|
Use Scenario: Closed-loop speed and position control of BLDC motors in HVAC actuators and factory automation drives. IC Role / Device Role / Timing Role: Primary controller executing PID loops, generating 3-phase PWM via PCA channels, and monitoring hall-effect feedback. Use Value: 6-clock execution mode delivers 40 MHz-equivalent throughput for sub-100 µs loop cycles; PCA hardware offloads timing-critical PWM generation from CPU. |
Use Scenario: Embedded baseboard management controller (BMC) in server motherboards implementing IPMI 1.5 protocol stack. IC Role / Device Role / Timing Role: Dedicated IPMI processor handling sensor polling, watchdog supervision, and FRU data storage via I²C and UART interfaces. Use Value: On-chip 32 KB Flash stores full IPMI firmware; enhanced UART supports KCS/SMIC interfaces; I²C manages temperature/voltage sensors and EEPROMs. |
| Smart Energy Metering | Industrial PLC I/O Module |
|
Use Scenario: Residential smart meter with tamper detection, pulse counting, and HAN communication via UART-to-PLC bridge. IC Role / Device Role / Timing Role: System controller managing metrology IC SPI interface, optical pulse input capture, and RS-485 HAN gateway. Use Value: PCA CEX inputs capture meter pulses with microsecond accuracy; 1 KB RAM buffers time-synchronized consumption logs before transmission. |
Use Scenario: DIN-rail mounted digital I/O expansion module for programmable logic controllers with isolated inputs/outputs. IC Role / Device Role / Timing Role: Local intelligence node performing debounce filtering, status reporting, and cyclic redundancy checks on fieldbus packets. Use Value: Four priority-level interrupts handle fast-response input events; ISP capability enables field firmware upgrades without module replacement. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit Flash microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT89C51ED2-RLTUM | 20 KB Flash, 1.25 KB RAM, built-in USB interface, no PCA; 6-clock mode only | Lacks PCA and I²C - unsuitable for motor PWM or sensor networks; USB simplifies PC-hosted firmware loading | Select when USB host connectivity is required and PWM/timing features are handled externally |
| STC89C52RC-PD | 8 KB Flash, 512 B RAM, 12-clock-only, no I²C, no PCA; lower cost, wider voltage range (3.3–5.5 V) | Missing PCA and I²C limits use in multi-peripheral or precision timing applications; suitable for basic control tasks | Select for cost-sensitive, low-complexity designs where advanced peripherals are unnecessary |
Compared with AT89C51ED2-RLTUM and STC89C52RC-PD, the P89C662HFA/00,512 provides superior real-time control capability through its five-channel PCA and integrated I²C, while maintaining full 8051 software compatibility - making it optimal for industrial motion control and embedded management where hardware-accelerated timing and peripheral integration are critical.
Availability
P89C662HFA/00,512 is available at Aetrix Electronics and suitable for industrial motor control, IPMI baseboard management, smart energy metering, and PLC I/O modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for P89C662HFA/00,512 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 (formerly Philips Semiconductors) is a global leader in high-reliability automotive, industrial, and secure connectivity solutions, with deep heritage in 8-bit microcontroller innovation.
The P89C662HFA/00,512 belongs to NXP's legacy 80C51 Flash MCU family, designed specifically for industrial control applications demanding robust in-field programmability, deterministic real-time response, and mixed-signal peripheral integration.
FAQ
What is the maximum operating frequency of the P89C662HFA/00,512 and how does clock mode affect performance?
The P89C662HFA/00,512 operates up to 20 MHz in its default 6-clock mode (delivering 40 MHz-equivalent instruction throughput) or up to 33 MHz in optional 12-clock mode. Clock mode is factory-configured and irreversible; 6-clock mode doubles execution speed versus standard 80C51 devices. The P89C662HFA/00,512 requires no external clock divider and supports direct crystal (1–20 MHz) or external clock input on XTAL1.
Does the P89C662HFA/00,512 support In-System Programming (ISP), and what interface is required?
Yes, the P89C662HFA/00,512 supports ISP via its UART interface using a default boot loader stored in ROM - no external programmer or parallel interface is needed. The P89C662HFA/00,512 enters ISP mode automatically on power-up if the EA/VPP pin is held low, allowing firmware download over RS-232 or TTL-level UART links without modifying the target PCB layout.
How many PCA channels does the P89C662HFA/00,512 provide, and which pins are assigned to them?
The P89C662HFA/00,512 provides five PCA channels: CEX0–CEX2 on P1.3–P1.5, and CEX3–CEX4 on P3.4–P3.5. Each channel supports independent PWM generation, input capture, or software-timed compare operations. All five channels are accessible simultaneously and can be configured via SFR registers CCAPM0–CCAPM4 without CPU intervention.
Is the I²C interface on the P89C662HFA/00,512 implemented in hardware, and what are its electrical characteristics?
Yes, the P89C662HFA/00,512 includes full hardware I²C support on P1.6 (SCL) and P1.7 (SDA), compliant with standard-mode (100 kbps) and fast-mode (400 kbps) specifications. Both pins are open-drain and require external pull-ups; no internal pull-ups exist. The SIO1 module handles START/STOP, arbitration, and ACK/NACK autonomously - freeing the CPU from bit-banging overhead.
What power management modes does the P89C662HFA/00,512 support, and how do they impact RAM retention?
The P89C662HFA/00,512 supports Idle Mode (CPU halted, peripherals active) and Power-Down Mode (oscillator stopped). In both modes, on-chip RAM and SFRs retain their values down to 2.0 V. Power-Down mode draws <10 µA typical; wake-up occurs via hardware reset or level-sensitive INT0/INT1. The P89C662HFA/00,512 includes a Power-On Flag (POF) bit to distinguish cold start from wake-up events.
P89C662HFA/00,512 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 44-LCC (J-Lead)
- Series:
- 89C
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- 8051
- Core Size:
- 8-Bit
- Speed:
- 33MHz
- Connectivity:
- I2C, UART/USART
- Peripherals:
- POR, PWM, WDT
- Number of I/O:
- 32
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 1K x 8
- Voltage - Supply (Vcc/Vdd):
- 4.75V ~ 5.25V
- Data Converters:
- -
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
P89C662HFA/00,512 FAQ
1.How can I place an order for P89C662HFA/00,512 through Aetrix?
Please submit a Request for Quotation (RFQ) for P89C662HFA/00,512 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 P89C662HFA/00,512 reliable?
The price and inventory of P89C662HFA/00,512 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P89C662HFA/00,512 is usually 5 days.
3.What payment methods are accepted for P89C662HFA/00,512?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P89C662HFA/00,512 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P89C662HFA/00,512?
P89C662HFA/00,512 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P89C662HFA/00,512 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 P89C662HFA/00,512?
For technical support, including P89C662HFA/00,512 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P89C662HFA/00,512 requirements.
6.How does Aetrix verify that P89C662HFA/00,512 is sourced from the original manufacturer or authorized distributors?
All P89C662HFA/00,512 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 P89C662HFA/00,512 meets industry standards.
7.What is the process for return or replacement of P89C662HFA/00,512?
All P89C662HFA/00,512 units undergo pre-shipment inspection (PSI). If there is an issue with P89C662HFA/00,512, 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 P89C662HFA/00,512 part is unused and in its original packaging.
Return procedure for P89C662HFA/00,512:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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