My Inquiry
My Account
NXP Semiconductors P87C554SBAA,512
- Part No.:
- P87C554SBAA,512
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 68-LCC (J-Lead)
- Datasheet:
-
P87C554SBAA,512.pdf
- Description:
- IC MCU 8BIT 16KB OTP 68PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:4,075
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P87C554SBAA,512 from Philips Semiconductors is an 80C51-compatible 8-bit microcontroller with 16 KB OTP program memory, 512-byte RAM, eight-channel 10-bit ADC, I²C interface, dual PWM outputs, and capture/compare timer T2 - used in industrial sensor nodes and embedded control systems requiring mixed-signal integration and low-power operation.
For engineers reviewing the P87C554SBAA,512 datasheet, P87C554SBAA,512 pinout, P87C554SBAA,512 application, or P87C554SBAA,512 equivalent, key selection criteria include OTP-based firmware immutability, PLCC-68 package compatibility, 16 MHz max clock at 2.7–5.5 V supply, ADC channel count, and I²C master/slave support in resource-constrained designs.
Technical Context
The P87C554SBAA,512 implements a static CMOS 80C51 core with 12-clock-per-instruction cycle architecture, supporting full binary/BCD arithmetic and bit manipulation. It integrates two standard 16-bit timers (T0/T1), a third 16-bit timer (T2) with four capture latches and three compare registers, and a watchdog timer (T3) with internal reset pulse generation.
Its analog subsystem includes an 8-input multiplexed 10-bit successive-approximation ADC with dedicated AVDD/AVSS pins and programmable reference inputs (AVREF+/AVREF−), while digital I/O features five bidirectional ports (P0–P4) plus an 8-bit input-only port (P5) shared with ADC channels - all configurable per-pin via mode registers (e.g., P1M1/P1M2).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 80C51-compatible 8-bit CPU with 12-clock instruction cycle; enables legacy 8051 code reuse without timing revalidation. |
| Memory | 16 KB on-chip OTP EPROM + 512 × 8 RAM; supports external expansion to 64 KB via standard address/data bus (P0/P2/ALE/PSEN). |
| ADC | 8-channel, 10-bit SAR ADC with dedicated analog power/ground and programmable reference; enables direct sensor interfacing without external signal conditioning. |
| I²C Interface | Byte-oriented master/slave I²C-bus port (SCL/SDA on P1.6/P1.7); supports standard-mode (100 kbps) communication with external EEPROMs or sensors. |
| PWM Outputs | Dual 8-bit resolution PWM outputs (PWM0/PWM1); provides precise duty-cycle control for motor speed or LED dimming without external DACs. |
| Power Modes | Idle mode (CPU halted, peripherals active) and Power-down mode (oscillator stopped, RAM retained down to 2.0 V); reduces system power to µA-level during standby. |
| Operating Voltage | 2.7–5.5 V at 0–16 MHz; allows single-supply operation across battery-powered and industrial 3.3 V/5 V systems. |
| Package | PLCC-68 (SOT188–3); surface-mount compatible with standard reflow profiles and manual rework accessibility. |
Pinout & Package
Package: Plastic Leaded Chip Carrier (PLCC), 68-pin, SOT188–3 footprint - suitable for high-reliability industrial PCBs with thermal cycling requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0.0–P0.7 (57–50) | Port 0 / AD0–AD7 / A0–A7 / D0–D7 | Multiplexed low-order address/data bus; open-drain I/O with strong pull-ups during external memory access - requires external latch for time-multiplexed addressing. |
| P1.0–P1.3 (16–19) | CT0I–CT3I | Capture timer inputs for T2; enable edge-triggered timestamping of external events (e.g., encoder pulses or fault signals). |
| P1.6/P1.7 (22/23) | SCL/SDA | I²C-bus clock/data lines; open-drain configuration mandates external pull-up resistors for bus arbitration and level translation. |
| P5.0–P5.7 (1,68–62) | ADC0–ADC7 | Analog input channels mapped directly to Port 5 pins; require AVDD/AVSS decoupling and reference stability for <±1 LSB integral nonlinearity. |
| STADC (3) | ADC Start Trigger | Hardware start signal for ADC conversion; complements software-initiated conversions for deterministic sampling timing. |
| EW (6) | Watchdog Enable | Active-high input enabling T3 watchdog timer and disabling Power-down mode - critical for fail-safe system recovery logic. |
Key Features
| Feature | Design Value |
|---|---|
| Second DPTR register | Enables simultaneous access to two external data memory regions - accelerates block copy and DMA-like operations in firmware. |
| ADC active in Idle mode | Allows background analog monitoring (e.g., temperature sensing) while CPU sleeps - extends battery life in portable instrumentation. |
| ALE inhibit for EMI reduction | Disables Address Latch Enable during external memory cycles - lowers radiated emissions in EMC-sensitive medical or automotive applications. |
| ONCE mode | On-Chip Emulation mode enables real-time debugging via external JTAG-like interface - eliminates need for ICE hardware during development. |
| Four-priority nested interrupt | 15 interrupt sources with priority levels managed by IP0/IP1 registers - ensures deterministic response to time-critical events (e.g., PWM fault detection). |
| Programmable I/O pin modes | Per-pin configuration (pseudo-bidirectional, push-pull, open-drain, high-Z) via P1M1/P1M2 registers - simplifies interface to diverse peripherals (relays, optocouplers, sensors). |
Applications
| Industrial Motor Control | Smart Sensor Node |
|---|---|
Use Scenario: Closed-loop DC motor speed regulation using feedback from hall-effect encoder and current sense. IC Role / Device Role / Timing Role: Main controller executing PID algorithm, generating PWM0/PWM1 for H-bridge drive, sampling ADC0–ADC3 for current/voltage feedback, and managing I²C comms with host MCU. Use Value: Integrated capture/compare (T2) precisely measures encoder edges; dual PWM outputs eliminate external gate drivers; 10-bit ADC resolves <0.1% torque ripple. | Use Scenario: Battery-powered environmental monitor measuring temperature, humidity, and CO₂ via analog and I²C sensors. IC Role / Device Role / Timing Role: System-on-chip managing sensor polling, ADC conversion, I²C slave interface to host, and low-power sleep/wake scheduling. Use Value: ADC active in Idle mode enables periodic wake-up for sensor reads; Power-down mode draws <10 µA; OTP prevents firmware tampering in field-deployed units. |
| Legacy Industrial PLC I/O Module | Embedded Power Supply Monitor |
Use Scenario: Retrofit I/O expansion module adding analog input capability to existing 8051-based PLC backplane. IC Role / Device Role / Timing Role: Peripheral controller interfacing 8 analog channels to main PLC CPU via parallel bus (P0/P2) and handling local interrupt-driven event capture. Use Value: Pin-compatible with 80C51 bus protocol; OTP memory stores calibration coefficients; PLCC-68 eases replacement on legacy PCBs. | Use Scenario: Real-time monitoring of AC/DC converter rail voltages and temperatures in telecom power shelves. IC Role / Device Role / Timing Role: Dedicated supervisor IC performing ADC sampling, overvoltage/overtemperature flagging, and watchdog reset assertion via RST pin. Use Value: Hardware STADC trigger synchronizes sampling to switching cycle; T3 watchdog ensures recovery from firmware lockup; AVDD/AVSS isolation minimizes noise coupling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT89C55WD | 16 KB Flash (not OTP), no integrated I²C, no capture/compare T2, only one PWM output. | Lacks hardware I²C and advanced timer features; requires external I²C transceiver and timer logic for equivalent functionality. | Select when field firmware updates are required and I²C/capture features are not needed. |
| P89C668 | Same Philips 80C51 core, 64 KB Flash, enhanced UART, but no integrated ADC or PWM outputs. | Requires external ADC and PWM ICs; better suited for communication-centric designs than mixed-signal control. | Select when larger program memory and serial throughput are prioritized over on-chip analog peripherals. |
Compared with AT89C55WD and P89C668, the P87C554SBAA,512 delivers unique integration of OTP security, 10-bit ADC, dual PWM, and I²C in a single PLCC-68 package - reducing BOM count and board area in cost-sensitive industrial controllers where firmware immutability is mandatory.
Availability
P87C554SBAA,512 is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, legacy PLC I/O modules, and embedded power supply monitors requiring stable component supply across extended product lifecycles.
Supply support for P87C554SBAA,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
Philips Semiconductors (now NXP Semiconductors) is a pioneer in mixed-signal microcontrollers, delivering robust, industry-qualified ICs for automotive, industrial, and consumer applications since the 1980s.
The P87C554SBAA,512 belongs to Philips' 80C51 derivative family designed specifically for embedded control systems demanding analog integration, low-power operation, and OTP-based firmware security in harsh environments.
FAQ
What is the maximum operating frequency and voltage range for the P87C554SBAA,512?
The P87C554SBAA,512 operates up to 16 MHz across a supply voltage range of 2.7 V to 5.5 V. At this frequency, it maintains full static operation with guaranteed timing margins. The device also supports 4.5–5.5 V operation up to 33 MHz, but the P87C554SBAA,512 variant is rated for 16 MHz only per its ordering code ('S' suffix) and temperature grade (0°C to +70°C).
Does the P87C554SBAA,512 support in-system programming or field firmware updates?
No, the P87C554SBAA,512 uses OTP (One-Time Programmable) EPROM memory, which cannot be erased or rewritten after initial programming. Firmware must be verified and finalized before programming; subsequent updates require hardware replacement. This design ensures firmware integrity in safety-critical or tamper-resistant applications.
How many analog input channels does the P87C554SBAA,512 ADC support, and what is its resolution?
The P87C554SBAA,512 integrates an 8-channel, 10-bit successive-approximation ADC. Channels ADC0–ADC7 map directly to Port 5 pins (P5.0–P5.7). Its resolution provides 1,024 discrete steps, enabling precise measurement of sensor outputs such as thermistors, potentiometers, or current shunts within ±1 LSB accuracy under specified conditions.
Can the P87C554SBAA,512 operate in low-power modes while maintaining ADC functionality?
Yes, the P87C554SBAA,512 supports ADC operation in Idle mode - allowing analog conversions to proceed while the CPU is halted. This enables energy-efficient periodic sampling (e.g., every 100 ms) without waking the core, reducing average system power consumption significantly compared to full-active operation.
What package type and pin count does the P87C554SBAA,512 use, and is it RoHS-compliant?
The P87C554SBAA,512 uses a 68-pin Plastic Leaded Chip Carrier (PLCC) package per drawing SOT188–3. While the original 2002 datasheet predates RoHS legislation, current Aetrix Electronics inventory complies with EU RoHS Directive 2011/65/EU and REACH SVHC requirements, with lead-free terminations and halogen-free molding compound.
P87C554SBAA,512 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 68-LCC (J-Lead)
- Series:
- 87C
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- 8051
- Core Size:
- 8-Bit
- Speed:
- 16MHz
- Connectivity:
- EBI/EMI, I2C, UART/USART
- Peripherals:
- POR, PWM, WDT
- Number of I/O:
- 40
- Program Memory Size:
- 16KB (16K x 8)
- Program Memory Type:
- OTP
- EEPROM Size:
- -
- RAM Size:
- 512 x 8
- Voltage - Supply (Vcc/Vdd):
- 2.7V ~ 5.5V
- Data Converters:
- A/D 8x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
P87C554SBAA,512 FAQ
1.How can I place an order for P87C554SBAA,512 through Aetrix?
Please submit a Request for Quotation (RFQ) for P87C554SBAA,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 P87C554SBAA,512 reliable?
The price and inventory of P87C554SBAA,512 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P87C554SBAA,512 is usually 5 days.
3.What payment methods are accepted for P87C554SBAA,512?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P87C554SBAA,512 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P87C554SBAA,512?
P87C554SBAA,512 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P87C554SBAA,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 P87C554SBAA,512?
For technical support, including P87C554SBAA,512 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P87C554SBAA,512 requirements.
6.How does Aetrix verify that P87C554SBAA,512 is sourced from the original manufacturer or authorized distributors?
All P87C554SBAA,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 P87C554SBAA,512 meets industry standards.
7.What is the process for return or replacement of P87C554SBAA,512?
All P87C554SBAA,512 units undergo pre-shipment inspection (PSI). If there is an issue with P87C554SBAA,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 P87C554SBAA,512 part is unused and in its original packaging.
Return procedure for P87C554SBAA,512:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P87C554SBAA,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…
