My Inquiry
My Account
NXP Semiconductors P89C662HBA/00,512
.jpg)
- Part No.:
- P89C662HBA/00,512
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 44-LCC (J-Lead)
- Datasheet:
-
P89C662HBA/00,512.pdf
- Description:
- IC MCU 8BIT 32KB FLASH 44PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:2,994
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P89C662HBA/00,512 from NXP Semiconductors (formerly Philips) is an 8-bit Flash microcontroller based on the 80C51 architecture, featuring 32 KB ISP/IAP Flash program memory and 1 KB on-chip RAM. It executes instructions in 6 clock cycles (2× speed vs. standard 80C51), supports up to 20 MHz operation in 6-clock mode, and integrates four 8-bit I/O ports, three 16-bit timers, enhanced UART with framing error detection, I²C interface, and a Programmable Counter Array (PCA) for PWM and capture/compare functions - deployed in motor control and industrial embedded systems.
For engineers reviewing the P89C662HBA/00,512 datasheet, P89C662HBA/00,512 pinout, P89C662HBA/00,512 application, or P89C662HBA/00,512 equivalent, key selection criteria include its PLCC-44 package, 32 KB Flash + 1 KB RAM configuration, 6/12-clock mode flexibility, I²C-capable P1.6/P1.7 pins, and ISP/IAP programmability via UART boot loader - all critical for legacy 8051-based upgrade paths and cost-sensitive industrial control designs.
Technical Context
The P89C662HBA/00,512 implements an accelerated 80C51 CPU core with dual clock modes: default 6-clock-per-machine-cycle execution (20 MHz max) and optional factory-configured 12-clock mode (33 MHz max). Its memory subsystem includes non-volatile 32 KB Flash supporting both In-System Programming (ISP) via UART boot ROM and In-Application Programming (IAP) using ROM-resident routines.
Peripheral integration centers on a full-duplex enhanced UART with automatic address recognition and framing error detection, a 5-channel PCA supporting PWM generation and edge-triggered capture, and hardware I²C interface on open-drain P1.6/SCL and P1.7/SDA - all operating under four priority-level nested interrupts and low-power modes including Idle and Power-Down with oscillator stop capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 80C51-compatible 8-bit CPU with 100% instruction and timing compatibility; executes one instruction per 6 clocks (2× speed of legacy 80C51). |
| Flash Memory | 32 KB ISP/IAP Flash: enables field firmware updates via UART without external programmer; supports self-reprogramming during runtime. |
| RAM | 1 KB on-chip data RAM; externally expandable to 64 KB via MOVX @DPTR addressing - sufficient for real-time control stacks and buffer management. |
| Max Operating Frequency | 20 MHz at 6-clock mode (40 MHz equivalent performance); 33 MHz at 12-clock mode - validated across 4.5–5.5 V supply range. |
| I/O & Peripherals | Four 8-bit bidirectional ports (P0–P3), three 16-bit timers, enhanced UART with framing error detection, I²C interface, and 5-channel PCA with PWM/capture/compare capability. |
| Power Management | Three low-power modes: Stop Clock (0 MHz), Idle (CPU halted, peripherals active), and Power-Down (oscillator stopped, RAM retained down to 2.0 V). |
| Package & Temperature | PLCC-44 (SOT187-2), commercial temperature range (0 °C to +70 °C), 4.5–5.5 V operation - suitable for industrial control panels and legacy replacement designs. |
Pinout & Package
Package: Plastic Leaded Chip Carrier (PLCC-44), SOT187-2 footprint, lead-free compatible, commercial temperature grade (0 °C to +70 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0.0–P0.7 | Open-drain bidirectional I/O / AD0–AD7 multiplexed bus | Serves as low-order address/data bus during external memory access; requires external pull-ups for reliable digital I/O use. |
| P1.0–P1.7 | Bidirectional I/O with alternate functions | P1.0/T2 and P1.1/T2EX support Timer2 external count/reload; P1.2–P1.5 serve PCA CEX0–CEX2; P1.6/SCL and P1.7/SDA provide open-drain I²C interface. |
| P2.0–P2.7 | Bidirectional I/O / A8–A15 high-order address bus | Outputs upper address byte during 16-bit external memory accesses; retains port functionality when not used for addressing. |
| P3.0–P3.7 | Bidirectional I/O with serial/peripheral functions | P3.0/RxD and P3.1/TxD form full-duplex UART; P3.2/INT0 and P3.3/INT1 are level-sensitive external interrupts; P3.4/T0 and P3.5/T1 support timer inputs and PCA CEX3/CEX4. |
| RST, XTAL1, XTAL2, EA/VPP, ALE, PSEN | Control and timing signals | RST enables power-on reset with internal VSS resistor; XTAL1/XTAL2 support crystal/resonator or external clock; EA/VPP selects internal/external code execution and receives programming voltage during Flash write. |
Key Features
| Feature | Design Value |
|---|---|
| 6-clock machine cycle mode | Doubles throughput vs. standard 80C51 - delivers 20 MHz real-time performance while maintaining full software compatibility. |
| In-System Programming (ISP) | UART-based Flash reprogramming without removing MCU from PCB; uses factory-loaded boot ROM - eliminates need for dedicated programmer hardware. |
| Programmable Counter Array (PCA) | Five independent channels support simultaneous PWM generation, input capture, and software-timed event counting - essential for motor phase control and encoder interfacing. |
| I²C serial interface | Hardware-accelerated I²C master/slave operation on P1.6/SCL and P1.7/SDA with automatic START/STOP handling and status register (S1STA) - reduces firmware overhead in sensor networks. |
| Enhanced UART | Framing error detection and automatic address recognition enable robust multi-drop communication in noisy industrial environments without additional protocol stack overhead. |
| Low EMI ALE inhibition | Software-controllable ALE disable (via AUXR.0) suppresses address latch pulses - critical for meeting EMC requirements in compact control modules. |
Applications
| Industrial Motor Control | Legacy 8051 System Upgrade |
|---|---|
|
Use Scenario: Closed-loop DC/BLDC motor control in HVAC actuators and conveyor drives requiring precise PWM timing and encoder feedback. IC Role / Device Role / Timing Role: Primary controller executing PID loops, generating 3-phase PWM via PCA channels, capturing quadrature encoder edges on CEX pins, and communicating fault status over UART. Use Value: 32 KB Flash accommodates field-upgradable motion algorithms; 6-clock mode ensures deterministic 50 µs interrupt latency for 20 kHz PWM carrier frequency. |
Use Scenario: Drop-in replacement for obsolete 87C51 or 80C51 variants in production test equipment and panel-mounted controllers. IC Role / Device Role / Timing Role: Pin- and code-compatible 80C51 derivative executing existing firmware with no source changes; leverages same development tools and debug infrastructure. Use Value: Eliminates redesign risk: identical instruction timing, SFR map, and port behavior - only Flash size and peripheral enhancements differ. |
| Smart Sensor Node | IPMI-Compliant Baseboard Management |
|
Use Scenario: Environmental monitoring node integrating temperature/humidity sensors, local display, and RS-485 backhaul in building automation systems. IC Role / Device Role / Timing Role: Central sensor aggregator reading I²C sensors, driving 7-segment display via port-mapped GPIO, and managing UART-to-RS485 translation with framing error recovery. Use Value: Integrated I²C and enhanced UART reduce BOM count; 1 KB RAM supports dual-buffered sensor logging and command queueing without external SRAM. |
Use Scenario: Baseboard Management Controller (BMC) sub-function in server motherboards performing thermal monitoring, fan speed control, and power sequencing. IC Role / Device Role / Timing Role: Dedicated IPMI slave processor handling SEL logging, sensor polling, and watchdog supervision - isolated from main CPU for reliability. Use Value: Hardware I²C and PCA-based PWM enable direct fan control; Power-Down mode extends battery-backed RTC uptime during AC loss. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT89C51RD2-RLTUM | 16 KB Flash, 1280 B RAM, 33 MHz max, PLCC-44; lacks I²C and PCA but adds SPI and EEPROM. | Preferred where SPI peripherals dominate and I²C/PCA are unnecessary; lower Flash density limits complex control firmware. | Select when migrating from AT89C51 family and SPI interface is required over I²C/PWM capability. |
| STC89C52RC-PD | 8 KB Flash, 512 B RAM, 35 MHz max, PDIP-40; includes built-in ISP via UART but no I²C or advanced PCA. | Suitable for cost-sensitive, low-complexity replacements where 32 KB Flash and hardware I²C are not needed. | Choose for budget-constrained upgrades where existing DIP layout must be preserved and feature set is minimal. |
Compared with AT89C51RD2-RLTUM and STC89C52RC-PD, the P89C662HBA/00,512 offers superior Flash capacity and integrated I²C/PCA for motor control and sensor fusion, while trading off SPI and EEPROM - making it optimal for industrial upgrades demanding PWM precision and bus-level interoperability without adding discrete logic.
Availability
P89C662HBA/00,512 is available at Aetrix Electronics and suitable for industrial motor control, legacy 8051 system upgrades, smart sensor nodes, and IPMI-compliant baseboard management requiring stable component supply and long-term obsolescence mitigation.
Supply support for P89C662HBA/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-performance mixed-signal ICs, with deep heritage in 8-bit microcontrollers and automotive/industrial system solutions.
The P89C662HBA/00,512 belongs to NXP's legacy 80C51 Flash microcontroller family, designed specifically to extend the life of 8051-based industrial control systems with ISP/IAP, enhanced peripherals, and drop-in compatibility - bridging legacy infrastructure and modern firmware maintainability.
FAQ
What is the maximum operating frequency of the P89C662HBA/00,512?
The P89C662HBA/00,512 supports up to 20 MHz in its default 6-clock-per-machine-cycle mode (delivering 40 MHz equivalent performance) and up to 33 MHz in the optional 12-clock mode. Both frequencies are validated across the full 4.5–5.5 V supply range and commercial temperature range (0 °C to +70 °C). The device ships pre-configured for 6-clock operation; 12-clock mode requires factory OTP programming and cannot be reverted.
Does the P89C662HBA/00,512 support In-System Programming (ISP) without external hardware?
Yes, the P89C662HBA/00,512 supports UART-based ISP using its factory-loaded boot ROM. No external programmer is required: a simple serial connection to P3.0/RxD and P3.1/TxD allows full Flash reprogramming in-system. The boot loader handles address decoding, checksum verification, and sector erase - enabling field firmware updates without removing the P89C662HBA/00,512 from the target board.
What I/O capabilities does the P89C662HBA/00,512 offer for PWM and motor control?
The P89C662HBA/00,512 provides five-channel Programmable Counter Array (PCA) hardware supporting simultaneous PWM generation, input capture, and software-timed events. Channels CEX0–CEX4 (mapped to P1.3–P1.7 and P3.4–P3.5) deliver precise, jitter-free PWM outputs with configurable duty cycle and frequency - directly enabling 3-phase motor gate drive, fan speed control, and encoder position tracking without CPU intervention.
Is the I²C interface on the P89C662HBA/00,512 hardware-accelerated or bit-banged?
The P89C662HBA/00,512 features a fully hardware-accelerated I²C interface (SIO1) on P1.6/SCL and P1.7/SDA. It includes dedicated registers (S1CON, S1STA, S1DAT, S1ADR), automatic START/STOP generation, address recognition, and interrupt-driven transaction handling - eliminating bit-banging overhead and ensuring reliable communication at standard (100 kHz) and fast (400 kHz) I²C speeds.
What package and pin count does the P89C662HBA/00,512 use?
The P89C662HBA/00,512 uses a 44-pin Plastic Leaded Chip Carrier (PLCC) package, designated SOT187-2. It is a surface-mount, square-outline package with J-leads, rated for commercial temperature operation (0 °C to +70 °C) and 4.5–5.5 V supply. This footprint matches legacy 80C51 PLCC variants, enabling direct PCB replacement in existing designs.
P89C662HBA/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):
- 4.5V ~ 5.5V
- Data Converters:
- -
- Oscillator Type:
- Internal
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
P89C662HBA/00,512 FAQ
1.How can I place an order for P89C662HBA/00,512 through Aetrix?
Please submit a Request for Quotation (RFQ) for P89C662HBA/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 P89C662HBA/00,512 reliable?
The price and inventory of P89C662HBA/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 P89C662HBA/00,512 is usually 5 days.
3.What payment methods are accepted for P89C662HBA/00,512?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P89C662HBA/00,512 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P89C662HBA/00,512?
P89C662HBA/00,512 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P89C662HBA/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 P89C662HBA/00,512?
For technical support, including P89C662HBA/00,512 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P89C662HBA/00,512 requirements.
6.How does Aetrix verify that P89C662HBA/00,512 is sourced from the original manufacturer or authorized distributors?
All P89C662HBA/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 P89C662HBA/00,512 meets industry standards.
7.What is the process for return or replacement of P89C662HBA/00,512?
All P89C662HBA/00,512 units undergo pre-shipment inspection (PSI). If there is an issue with P89C662HBA/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 P89C662HBA/00,512 part is unused and in its original packaging.
Return procedure for P89C662HBA/00,512:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P89C662HBA/00,512 Tags
-
ATTINY4-TSHR
Microchip Technology
-
ATTINY10-TSHR
Microchip Technology
-
ATTINY10-TS8R
Microchip Technology
-
ATTINY202-SSNR
Microchip Technology
-
ATTINY202-SSFR
Microchip Technology
-
ATTINY402-SSNR
Microchip Technology
-
PIC16F15213T-I/MF
Microchip Technology
-
PIC16F15213-E/MF
Microchip Technology
-
PIC10F200T-I/OT
Microchip Technology
-
ATTINY412-SSNR
Microchip Technology
-
PIC10F202T-I/OT
Microchip Technology
-
ATTINY404-SSNR
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
