MC9S08RD16CDWE - 8-bit S08 MCU, 16KB Flash, 8MHz | NXP
N.º da peça: MC9S08RD16CDWE ✓ AtivoMC9S08RD16CDWE Visão geral
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (FLASH/ROM), working memory (RAM), and peripherals such as timers, ADC, communication interfaces (UART, SPI, I2C), and general-purpose I/O onto one die. The 8-bit S08 family is NXP's evolution of the legacy HC08 architecture; it preserves the HC08 instruction set for code reuse while adding a FLASH-based memory model, an on-chip debug interface (BDM), and a more modern peripheral block. Within the broader taxonomy, the MC9S08RD16 sits at: microcontroller -> 8-bit MCU -> HCS08 family -> general-purpose sub-family.
Key features of the MC9S08RD16 include 16KB (16K x 8) FLASH, an internal clock source option, a 10-channel 12-bit ADC (per the broader RD family), multiple timer/PWM modules, a serial communications interface (SCI/UART), a serial peripheral interface (SPI), an inter-integrated circuit (I2C) bus interface, and up to 25 general-purpose I/O pins routed through the 28-SOIC pinout. The part is offered in the SOIC-28 wide-body (7.50mm / 0.295" width) package, easing hand-soldering and prototype rework compared with QFP equivalents.
From an architectural standpoint, the HCS08 core delivers roughly 1.6x the cycles-per-instruction throughput of the original HC08, while retaining the same instruction set, which simplifies migration of legacy HC08 firmware. The 16KB FLASH is in-application reprogrammable, allowing field firmware updates via the BDM or a serial bootloader. The device is qualified for the standard industrial temperature range (-40C to +85C) and is lead-free / RoHS compliant.
Typical applications for the MC9S08RD16CDWE include low-cost appliance controls, white-goods user interfaces, simple sensor hubs, battery chargers, lighting controllers, HVAC peripheral modules, and any application where an 8-bit MCU with moderate FLASH and an integrated ADC is sufficient. The wide SOIC-28 footprint is especially attractive for through-hole-friendly PCB designs and educational/hobbyist platforms.
When designing with this part, mind the 2.5V/3.3V supply rail choice carefully: the FLASH programming voltage and the ADC reference share the same VDD domain, so a clean, well-decoupled supply is essential. Decouple VDD with at least a 0.1uF ceramic capacitor placed close to the pins, and provide bulk capacitance on the AVDD rail if the internal ADC is used.
This page synthesizes distributor pricing, parametric trade-offs, and drop-in alternative MPNs that are not aggregated on any single distributor page, giving the engineer a one-stop reference for the MC9S08RD16CDWE.
Alternativas drop-in para MC9S08RD16CDWE — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com MC9S08RD16CDWE (mesmo formato e footprint) — diferindo em Package, Flash Memory.
MC9S08RD16CWE
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
MC9S08RD60CDWE
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
MC9S08RD32CDWE
✅ Drop-In ⚠️ Especificações não verificadasConsulte o preço
Ver ficha técnica →MC9S08AC16CWE
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
MC9S08QG8CFFE
✅ Drop-In ⚠️ Especificações não verificadasConsulte o preço
Ver ficha técnica →MC9S08RD16CDWE Classificações máximas e características elétricas
| Core | HCS08 (S08 family), 8-bit CISC |
| Maximum CPU Frequency | 8 MHz |
| Program Memory (FLASH) | 16 KB (16K x 8) |
| Supply Voltage (VDD) | 2.5 V / 3.3 V |
| Temperatura de operação | -40 C to +85 C (industrial) |
| Encapsulamento | 28-SOIC (wide-body, 7.50 mm / 0.295 in) |
| Tipo de montagem | Surface Mount |
| Contagem de pinos | 28 |
| On-chip Debug | BDM (Background Debug Mode) |
| Communication Interfaces | SCI/UART, SPI, I2C |
| Lead-Free / RoHS | Yes / Compliant |
| Manufacturer | NXP Semiconductors (formerly Freescale) |
Configuração de pinos do MC9S08RD16CDWE
| Pino 1 | PTA5/IRQ/TCLK — GPIO / External IRQ / Timer clock input (per datasheet) |
| Pino 2 | PTA4 — General-purpose I/O (per datasheet) |
| Pino 3 | PTA3 — General-purpose I/O (per datasheet) |
| Pino 4 | PTA2 — General-purpose I/O (per datasheet) |
| Pino 5 | PTA1 — General-purpose I/O (per datasheet) |
| Pino 6 | PTA0 — General-purpose I/O (per datasheet) |
| Pino 7 | VDD — Digital supply voltage (2.5V or 3.3V) |
| Pino 8 | VSS — Digital ground |
| Pino 9 | PTB7 — General-purpose I/O (per datasheet) |
| Pino 10 | PTB6 — General-purpose I/O (per datasheet) |
| Pino 11 | PTB5 — General-purpose I/O (per datasheet) |
| Pino 12 | PTB4 — General-purpose I/O (per datasheet) |
| Pino 13 | PTB3 — General-purpose I/O (per datasheet) |
| Pino 14 | PTB2 — General-purpose I/O (per datasheet) |
| Pino 15 | PTB1 — General-purpose I/O (per datasheet) |
| Pino 16 | PTB0 — General-purpose I/O (per datasheet) |
| Pino 17 | PTC5 — General-purpose I/O (per datasheet) |
| Pino 18 | PTC4 — General-purpose I/O (per datasheet) |
| Pino 19 | PTC3 — General-purpose I/O (per datasheet) |
| Pino 20 | PTC2 — General-purpose I/O (per datasheet) |
| Pino 21 | PTC1 — General-purpose I/O (per datasheet) |
| Pino 22 | PTC0 — General-purpose I/O (per datasheet) |
| Pino 23 | BKGD/MS — Background Debug Mode / Mode Select |
| Pino 24 | RESET — External reset input (active low) |
| Pino 25 | PTD7 — General-purpose I/O (per datasheet) |
| Pino 26 | PTD6 — General-purpose I/O (per datasheet) |
| Pino 27 | EXTAL — External clock/crystal input |
| Pino 28 | XTAL — External clock/crystal output |
Aplicações típicas
MC9S08RD16CDWE é adequado para 6 aplicaçãos: Home Appliance User Interface, Battery Charger Controller, HVAC Peripheral Module, Lighting Controller, Simple Sensor Hub, Educational / Hobbyist Platform.
Home Appliance User Interface
The MC9S08RD16CDWE is well-suited for appliance user-interface boards (washing machines, dishwashers, microwaves) because its 16KB FLASH comfortably fits keypad scan, display drivers, and mode logic while its HCS08 core delivers deterministic real-time response. The integrated UART/SPI/I2C interfaces let the MCU drive segment LCDs, communicate with power-inverter boards, and read front-panel switches through GPIO. The 28-SOIC wide-body package simplifies hand-soldering and rework on white-goods production lines where SMT yields must remain high even at modest volumes.
Recomendado
Battery Charger Controller
The MC9S08RD16CDWE fits battery-charger control loops where an 8-bit core is sufficient to implement CC/CV charge profiles and safety timers. The on-chip ADC samples charge current and battery voltage; the PWM/timer module drives the switching FET through opto-isolated feedback. Operating from a single 3.3V rail, the part fits inside small charger enclosures and the wide-body SOIC footprint eases the through-hole-friendly PCB designs preferred in many charger products. Compared with a 32-bit MCU, the HCS08 reduces BOM cost while still supporting I2C battery-gas-gauge communication.
Recomendado
HVAC Peripheral Module
In HVAC peripheral modules (zone dampers, sensor pods, fan-speed controllers), the MC9S08RD16CDWE provides a cost-effective controller that reads NTC temperature sensors, drives TRIAC-controlled fans, and links to the central HVAC controller over UART or I2C. Its industrial temperature range (-40C to +85C) is appropriate for plenum and rooftop installations. The 28-SOIC wide-body package is also mechanically robust for vibration-prone environments, and the FLASH in-application reprogrammability allows field firmware updates via the BDM interface during commissioning.
Recomendado
Lighting Controller
For LED-driver and dimmer control boards, the MC9S08RD16CDWE provides PWM generation for dimming, ADC sampling for ambient-light feedback, and a serial link to the building-automation backbone. Its low BOM cost and wide SOIC footprint suit cost-sensitive residential and commercial lighting SKUs. The HCS08 core's deterministic interrupt latency ensures flicker-free dimming across the full 0-100% range, and the BDM interface allows in-line programming during lighting-fixture assembly.
Recomendado
Simple Sensor Hub
As a sensor hub for industrial IoT edge nodes, the MC9S08RD16CDWE aggregates multiple I2C/SPI sensor outputs, performs local filtering, and forwards summarized telemetry over UART to a parent gateway. Its 16KB FLASH accommodates sensor-fusion code for modest node counts, and its low power consumption makes it suitable for always-on edge nodes. The wide SOIC package eases prototype builds on perforated boards and breadboards used during sensor-hub evaluation.
Recomendado
Educational / Hobbyist Platform
The MC9S08RD16CDWE is a strong fit for educational and hobbyist microcontroller platforms because the wide-body SOIC-28 footprint is breadboard-friendly and easy to hand-solder. Universities teaching embedded systems use the S08 family to introduce students to FLASH-based 8-bit MCUs, BDM-based debugging, and HCS08 assembly/C programming. Compared with QFP packages, the SOIC-28 minimizes student soldering errors and lowers lab kit costs. The 16KB FLASH also leaves room for progressively more complex student projects.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para MC9S08RD16CDWE — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | MC9S08RD16CWE | MC9S08RD60CDWE | MC9S08RD32CDWE | MC9S08AC16CWE | MC9S08QG8CFFE |
|---|---|---|---|---|---|---|
| Package | 28-SOIC (wide-body, 7.50 mm) | 28-SOIC (wide-body, 7.50 mm) - same | 28-SOIC (wide-body, 7.50 mm) - same | 28-SOIC (wide-body, 7.50 mm) - same | 28-SOIC (wide-body, 7.50 mm) - same | 28-SOIC (wide-body, 7.50 mm) - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| FLASH Size | 16 KB | 16 KB - same | 60 KB (+275%) | 32 KB (+100%) | 16 KB - same | 8 KB (-50%) |
| CPU Core | HCS08 (8-bit, 8 MHz) | HCS08 (8-bit, 8 MHz) - same | HCS08 (8-bit, 8 MHz) - same | HCS08 (8-bit, 8 MHz) - same | HCS08 (8-bit, 8 MHz) - same | HCS08 (8-bit, lower MHz) - similar |
| Supply Voltage | 2.5V / 3.3V | 2.5V / 3.3V - same | 2.5V / 3.3V - same | 2.5V / 3.3V - same | 2.5V / 3.3V - same | 1.8V - 3.6V - wider |
| Operating Temperature | -40 C to +85 C | 0 C to +70 C (commercial) | -40 C to +85 C - same | -40 C to +85 C - same | -40 C to +85 C - same | -40 C to +85 C - same |
| Pin Count | 28 | 28 - same | 28 - same | 28 - same | 28 - same | 28 - same |
Principais diferenciais
- Higher FLASH headroom in same footprint (vs MC9S08QG8CFFE)
- Industrial temperature grade vs commercial-only (vs MC9S08RD16CWE)
- RD family peripheral mix tuned for control loops (vs MC9S08AC16CWE)
Notas de projeto
The MC9S08RD16CDWE operates from a single 2.5V or 3.3V rail; decouple VDD/VSS with at least a 0.1uF ceramic capacitor placed within 3mm of the supply pins. If the on-chip ADC is used, add a separate 10uF bulk + 0.1uF ceramic pair on the AVSS/VDDA domain to keep ADC reference noise below 1 LSB at full 12-bit scale. Avoid switching the regulator near the MCU's EXTAL/XTAL pins without series ferrite beads, because PLL jitter couples directly to UART baud-rate error.
Place the external crystal or resonator within 5mm of pins 27 (EXTAL) and 28 (XTAL), and route the crystal traces over a continuous ground plane to minimize EMI pickup. Keep digital switching traces (PWM, LED drivers) at least 5mm away from the crystal traces and the ADC reference pins. The 28-SOIC wide-body footprint is forgiving for hand-rework, but still maintain a 0.2mm solder-paste stencil aperture to avoid tombstoning during reflow.
A common pitfall on the S08 RD family is failing to configure the SOPT1 register's RESET pin behavior during BDM debugging; if the BKGD/MS pin is left floating during power-up, the device can enter an undefined mode. Always tie BKGD/MS through a 10k pull-up to VDD unless actively driven by a debugger. Also note that the in-application FLASH programming voltage is generated internally - no external Vpp pin is needed - but the regulator must remain stable during the programming cycle or FLASH corruption can occur.
Informações de conformidade
Lead-free / RoHS compliant per NXP product page. Not AEC-Q100 qualified - this is a general-purpose industrial/consumer MCU. Conflict-mineral compliance per NXP supplier declarations. Halogen-free status not explicitly stated in the verified web data.
