My Inquiry
My Account
NXP Semiconductors P89V662FBC,557
- Part No.:
- P89V662FBC,557
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 44-TQFP
- Datasheet:
-
P89V662FBC,557.pdf
- Description:
- IC MCU 8BIT 32KB FLASH 44TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,962
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P89V662FBC from NXP Semiconductors is an 8-bit 80C51 microcontroller with 32 kB on-chip flash, 1 kB RAM, dual I²C-bus interfaces (primary and secondary), SPI, and a 4-bit Port 4 - designed as a drop-in, software-compatible replacement for P89C662 in industrial control and sensor interface applications.
For engineers reviewing the P89V662FBC datasheet, P89V662FBC pinout, P89V662FBC application, or P89V662FBC equivalent, this device supports 0–40 MHz operation in 12x mode, 128-byte page erase for non-volatile data storage, and dual I²C/SPI peripheral coexistence - critical for multi-sensor bus arbitration and firmware-upgradable embedded systems.
Technical Context
The P89V662FBC implements a standard 80C51 CPU core with enhanced peripherals: two independent I²C-bus controllers (SCL/SDA and SCL_1/SDA_1), full-duplex SPI with master/slave support (SPICLK/MOSI/MISO/SS), and a five-channel Programmable Counter Array (PCA) supporting PWM, capture, and compare functions across CEX0–CEX4 pins.
Memory architecture includes 32 kB flash (128-byte erasable pages), 1 kB RAM (512 B internal + 512 B expanded XRAM via EXTRAM bit), dual DPTR registers, and dedicated SFRs for I²C status/control (S1CON/S2CON), SPI configuration (SPCR/SPSR), and PCA timing (CCON/CCAPMn). It operates at 5 V with −40 °C to +85 °C temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 80C51 8-bit CPU, fully software-compatible with legacy P89C662 and standard 8051 instruction set. |
| Flash Memory | 32 kB on-chip flash with 128-byte page erase (≤30 ms/page), enabling efficient non-volatile data storage alongside program code. |
| RAM | 1 kB total: 512 B internal RAM + 512 B expanded XRAM accessible via MOVX when EXTRAM=1. |
| Operating Frequency | 0–40 MHz in 12x mode; 0–20 MHz in 6x mode; selectable via ISP or parallel programmer. |
| I/O Ports | Four 8-bit ports (P0–P3) plus one 4-bit Port 4 (P4[0]–P4[3]), supporting SPI, secondary I²C, and GPIO functions. |
| Peripherals | Dual I²C-bus (100 kHz byte-wide), SPI, enhanced UART, three 16-bit timers, PCA with 5 capture/compare channels, WDT. |
| Package | TQFP44 (10 × 10 × 1.0 mm), lead-free, RoHS-compliant, with 44-pin surface-mount footprint. |
Pinout & Package
TQFP44 package: plastic thin quad flat package, 44 leads, body size 10 × 10 × 1.0 mm (SOT376-1), suitable for high-density PCB layouts and industrial reflow assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0[0]–P0[7] | Port 0 bidirectional I/O / AD0–AD7 | Multiplexed address/data bus for external memory access; open-drain with internal pull-ups; requires external pull-ups for general-purpose I/O. |
| P1[0]/T2, P1[1]/T2EX, P1[2]/ECI, P1[3]–P1[7]/CEX0–CEX2, SCL, SDA | Port 1 with timer/PCA/I²C functions | Supports Timer2 I/O, PCA channel triggers, and primary I²C interface; P1[5]–P1[7] offer 16 mA drive capability. |
| P2[0]–P2[7]/A8–A15 | Port 2 bidirectional I/O / high-order address | Provides A8–A15 during external memory access; internal pull-ups enable direct GPIO use without external components. |
| P3[0]/RXD, P3[1]/TXD, P3[2]/INT0, P3[3]/INT1, P3[4]/T0/CEX3, P3[5]/T1/CEX4, P3[6]/WR, P3[7]/RD | Port 3 with serial/external interrupt/timer/memory control | UART interface, two external interrupts, Timer0/1 inputs, and external memory read/write strobes - essential for system expansion. |
| P4[0]/SCL_1/SPICLK, P4[1]/SDA_1/MISO, P4[2]/MOSI, P4[3]/SS | Port 4 with secondary I²C and SPI | Dedicated 4-bit port enabling concurrent secondary I²C slave/master operation and full-duplex SPI - eliminates bus contention in multi-peripheral designs. |
| XTAL1, XTAL2 | Crystal oscillator inputs | Supports quartz crystal or ceramic resonator (1–20 MHz typical); internal oscillator circuit eliminates need for external clock source. |
| RST, EA, ALE/PROG, PSEN, VDD, VSS | Reset, memory select, programming, and power | Standard 8051 control signals: EA=VDD enables internal flash execution; ALE/PROG supports ISP programming; RST requires 2-machine-cycle high pulse. |
Key Features
| Feature | Design Value |
|---|---|
| Dual I²C-bus interfaces | Enables simultaneous communication with two independent I²C buses (e.g., sensor cluster + EEPROM), avoiding software arbitration overhead. |
| 128-byte flash page erase | Allows fine-grained non-volatile data logging (e.g., calibration values, event counters) without disrupting application code in adjacent pages. |
| Expanded 1 kB RAM with EXTRAM control | 512 B extended XRAM accessible via MOVX@DPTR when EXTRAM=1 - simplifies data buffering for SPI/I²C transfers without external RAM. |
| Five-channel PCA with PWM/capture | Supports precise motor control (PWM), time-of-flight measurement (capture), and encoder signal decoding (CEX0–CEX4) using dedicated hardware timers. |
| Software-selectable 6x/12x clock mode | Runtime switch between 6-clock (higher throughput) and 12-clock (legacy compatibility) modes via ISP or IAP - no hardware change required. |
| Low EMI mode (ALE inhibit) | AO bit disables ALE during normal operation, reducing electromagnetic emissions in noise-sensitive environments like medical or automotive subsystems. |
Applications
| Industrial PLC I/O Module | Sensor Fusion Hub |
|---|---|
Use Scenario: Real-time acquisition and preprocessing of analog/digital sensor inputs (temperature, pressure, position) in factory automation cabinets. IC Role / Device Role / Timing Role: Central 80C51 controller managing ADC interfacing, digital I/O scanning, and Modbus RTU over UART. Use Value: Dual I²C and SPI allow concurrent connection to local I²C sensors and remote SPI-based isolation gateways - eliminating bus bottlenecks. |
Use Scenario: Aggregating data from heterogeneous environmental sensors (I²C humidity, SPI accelerometer, UART GPS) in smart building nodes. IC Role / Device Role / Timing Role: Sensor hub MCU performing timestamped data fusion, local filtering, and buffered transmission to gateway. Use Value: 128-byte flash page erase enables reliable over-the-air calibration updates without corrupting firmware; 1 kB RAM buffers multi-sensor burst reads. |
| Legacy Equipment Retrofit Controller | Power Supply Monitor & Sequencer |
Use Scenario: Drop-in replacement for obsolete P89C662 in aging industrial HMIs and motor drives requiring minimal PCB redesign. IC Role / Device Role / Timing Role: Pin- and code-compatible upgrade path preserving existing firmware while adding SPI and secondary I²C. Use Value: Software compatibility reduces qualification effort; added peripherals enable future feature expansion (e.g., SPI-connected display driver). |
Use Scenario: Monitoring rail voltages, sequencing startup/shutdown, and triggering fault responses in telecom power shelves. IC Role / Device Role / Timing Role: Supervisor MCU executing precise timing-critical power sequencing via PCA-generated PWM and capture-triggered voltage sampling. Use Value: Five PCA channels provide independent timing for up to five power rails; WDT ensures fail-safe reset during brownout conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| P89V664FBC | 64 kB flash, 2 kB RAM, same TQFP44 package and peripheral set; higher memory capacity but identical pinout and instruction set. | Required where larger firmware image or extended non-volatile data storage (e.g., firmware OTA staging area) is needed beyond 32 kB. | Select P89V664FBC only if application firmware exceeds 32 kB or requires >1 kB persistent data space - otherwise P89V662FBC offers optimal cost/performance balance. |
| STC89C52RC | 51-compatible MCU with 8 kB flash, 512 B RAM, single I²C, no PCA; different pinout (PDIP40/LQFP44), no 128-byte page erase. | Suitable for basic control tasks without dual bus concurrency or fine-grained flash updates; lacks Port 4 and secondary I²C. | Choose STC89C52RC only for cost-sensitive, low-complexity designs where dual I²C, SPI, and 128-byte erase are unnecessary - not a drop-in replacement. |
Compared with P89V664FBC, the P89V662FBC provides identical peripherals and timing in a lower-cost 32 kB configuration; compared with STC89C52RC, it delivers true dual-bus concurrency, hardware PCA, and field-upgradable flash architecture - making it superior for industrial edge nodes requiring reliability and extensibility.
Availability
P89V662FBC is available at Aetrix Electronics and suitable for industrial control systems, sensor interface modules, and legacy equipment retrofits requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for P89V662FBC 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, with deep expertise in 8-bit microcontrollers and embedded security.
The P89V662FBC belongs to NXP's legacy 80C51 family, engineered specifically for industrial retrofit, sensor aggregation, and resource-constrained embedded control - emphasizing software compatibility, peripheral richness, and robust flash programming.
FAQ
What is the maximum operating frequency of the P89V662FBC?
The P89V662FBC supports up to 40 MHz in 12x mode and 20 MHz in 6x mode. Frequency selection is programmable via ISP or parallel programmer and persists across resets. The internal oscillator accepts crystals or resonators from 1 MHz to 20 MHz, with timing stability meeting industrial-grade requirements across −40 °C to +85 °C.
Does the P89V662FBC support In-System Programming (ISP)?
Yes, the P89V662FBC fully supports ISP via UART using the on-chip bootloader. It requires no external programming hardware - only a serial interface and proper reset sequence. ISP enables field firmware updates and eliminates the need for socketed programming, making it ideal for deployed industrial systems where the P89V662FBC serves as the main controller.
How does the dual I²C-bus interface work on the P89V662FBC?
The P89V662FBC integrates two independent I²C-bus controllers: primary (P1[6]/SCL, P1[7]/SDA) and secondary (P4[0]/SCL_1, P4[1]/SDA_1), each with dedicated SFRs (S1CON/S2CON) and status registers. They operate concurrently without shared resources, allowing simultaneous communication with separate I²C devices - for example, reading a temperature sensor on bus 1 while writing calibration data to EEPROM on bus 2.
What is the purpose of Port 4 on the P89V662FBC?
Port 4 is a dedicated 4-bit I/O port (P4[0]–P4[3]) that provides hardware-mapped functions for the secondary I²C-bus (SCL_1/SDA_1) and SPI (SPICLK/MOSI/MISO/SS). Unlike multiplexed ports, P4 pins are functionally fixed - enabling true peripheral coexistence without software-managed pin switching, which improves real-time determinism in applications relying on the P89V662FBC for sensor hub or communication gateway roles.
Can the P89V662FBC execute code from external memory?
No - the P89V662FBC executes exclusively from its 32 kB on-chip flash memory. The EA pin must be tied to VDD to enable internal code execution; connecting EA to VSS forces external program fetches, but the device lacks external program bus support (no PSEN-controlled external ROM interface). External data memory access (XDATA) is supported via MOVX, but code execution remains strictly internal to preserve security and performance of the P89V662FBC.
P89V662FBC,557 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 44-TQFP
- Series:
- 89V
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- 8051
- Core Size:
- 8-Bit
- Speed:
- 40MHz
- Connectivity:
- I2C, SPI, UART/USART
- Peripherals:
- POR, PWM, WDT
- Number of I/O:
- 36
- 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
P89V662FBC,557 FAQ
1.How can I place an order for P89V662FBC,557 through Aetrix?
Please submit a Request for Quotation (RFQ) for P89V662FBC,557 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 P89V662FBC,557 reliable?
The price and inventory of P89V662FBC,557 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P89V662FBC,557 is usually 5 days.
3.What payment methods are accepted for P89V662FBC,557?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P89V662FBC,557 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P89V662FBC,557?
P89V662FBC,557 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P89V662FBC,557 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 P89V662FBC,557?
For technical support, including P89V662FBC,557 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P89V662FBC,557 requirements.
6.How does Aetrix verify that P89V662FBC,557 is sourced from the original manufacturer or authorized distributors?
All P89V662FBC,557 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 P89V662FBC,557 meets industry standards.
7.What is the process for return or replacement of P89V662FBC,557?
All P89V662FBC,557 units undergo pre-shipment inspection (PSI). If there is an issue with P89V662FBC,557, 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 P89V662FBC,557 part is unused and in its original packaging.
Return procedure for P89V662FBC,557:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P89V662FBC,557 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…
