MC9S08SE8MRL - 8-Bit S08 MCU, 8KB Flash, 20MHz | NXP | DIP-28
Teilenummer: MC9S08SE8MRL ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $4.28 | $4,28 |
| 10 | $3.85 | $38,50 |
| 100 | $3.21 | $321,00 |
| 500 | $2.74 | $1.370,00 |
| 1.000 | $2.4 | $2.400,00 |
| 3.000 | $2.14 | $6.420,00 |
MC9S08SE8MRL Übersicht
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash/ROM), data memory (RAM), and peripheral subsystems onto one die. The S08 core used here is NXP's HCS08 8-bit CISC architecture targeting low-cost, deterministic embedded control. Within the broader taxonomy, the S08SE belongs to the 8-bit microcontroller class, sitting beneath 16-bit (S12) and 32-bit (Kinetis/ColdFire) families in NXP's portfolio, and is often chosen where simple I/O control, motor drive signaling, or LIN-bus slave communication is needed without the overhead of ARM-class silicon.
Key features of the MC9S08SE8MRL include 8KB on-chip Flash with in-application reprogrammability, 20 MHz maximum bus clock derived from an internal oscillator or external crystal, multiple low-power modes for battery-friendly designs, hardware LVD (Low-Voltage Detect) for brown-out resilience, and an integrated watchdog timer. The 28-pin PDIP form factor is also well suited to breadboarding, education kits, and legacy through-hole designs where surface-mount is impractical.
Typical applications include automotive body controllers, appliance control boards, consumer electronics user-interface modules, LIN-bus slave nodes, low-cost sensor hubs, and industrial remote/keypad modules. The wide 2.7V-5.5V supply range simplifies both 3.3V and 5V system designs.
When designing with this part, ensure your emulator/debugger (such as the P&E Multilink or USB-BDM) supports the HCS08 BDM interface for code development and Flash programming. Decouple VDD/VSS with 100nF ceramic capacitors placed within 5mm of the pins, and respect the 5V absolute-maximum rating on I/O lines even when the MCU runs at 3.3V.
This page synthesizes distributor stock data, NXP-original drop-in alternatives, and practical design notes not typically consolidated on a single supplier listing.
Drop-in-Alternativen für MC9S08SE8MRL – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Varianten dieser Serie
Modelle derselben Serie, die drop-in-kompatibel sind mit MC9S08SE8MRL (gleiche Bauform und Footprint) – abweichend in Package, Mounting Type, RoHS Status, Core Architecture, Core Processor.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
MC9S08SE4MRL
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
MC9S08SE8MRLG
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
MC9S08QE8CWL
✅ Drop-In✓ Auf Lager
$3.33 / Stück
Datenblatt ansehen →MC9S08SH8CPJ
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
MC9S08SE8MRL Grenzwerte & elektrische Eigenschaften
| Core Processor | S08 (HCS08) |
| Core Size | 8-Bit |
| Program Memory Size | 8KB (8K x 8) Flash |
| Maximum CPU Clock | 20 MHz |
| Gehäuse | 28-Pin PDIP (DIP-28) |
| Montageart | Through-Hole |
| Versorgungsspannung | 2.7V to 5.5V (3.3V / 5V) |
| Number of I/O | 22 |
| Connectivity | I2C, LINbus, SCI, SPI |
| Peripherals | LVD, PWM, WDT |
| Speichertyp | Flash |
| RoHS-Status | Compliant (per distributor listing) |
MC9S08SE8MRL Pin-Konfiguration
| Pin 1 | PTC0 — Port C bit 0 / TCLK1 / ADP0 |
| Pin 2 | PTC1 — Port C bit 1 / TCLK2 / ADP1 |
| Pin 3 | PTC2 — Port C bit 2 / ADP2 |
| Pin 4 | PTC3 — Port C bit 3 / ADP3 |
| Pin 5 | VDD — Power supply (3.3V / 5V) |
| Pin 6 | VSS — Ground |
| Pin 7 | PTB0 — Port B bit 0 / ADP0 alternative |
| Pin 8 | PTB1 — Port B bit 1 / ADP1 alternative |
| Pin 9 | PTB2 — Port B bit 2 / SDA |
| Pin 10 | PTB3 — Port B bit 3 / SCL |
| Pin 11 | PTB4 — Port B bit 4 / MOSI |
| Pin 12 | PTB5 — Port B bit 5 / MISO |
| Pin 13 | PTB6 — Port B bit 6 / SPSCK |
| Pin 14 | PTB7 — Port B bit 7 / SS |
| Pin 15 | PTA0 — Port A bit 0 / TxD |
| Pin 16 | PTA1 — Port A bit 1 / RxD |
| Pin 17 | PTA2 — Port A bit 2 / PWM channel 0 |
| Pin 18 | PTA3 — Port A bit 3 / PWM channel 1 |
| Pin 19 | PTA4 — Port A bit 4 / PWM channel 2 |
| Pin 20 | PTA5 — Port A bit 5 |
| Pin 21 | PTA6 — Port A bit 6 |
| Pin 22 | PTA7 — Port A bit 7 |
| Pin 23 | RESET — Reset input (active low) |
| Pin 24 | BKGD — Background Debug Mode (BDM) |
| Pin 25 | EXTAL — External clock/crystal input |
| Pin 26 | XTAL — Crystal output |
| Pin 27 | IRQ — External interrupt request |
| Pin 28 | NC — Not connected (per datasheet) |
Typische Anwendungen
MC9S08SE8MRL ist geeignet für 6 Anwendungs: Automotive LIN-Bus Body Control, Home Appliance Control Boards, Consumer Electronics User Interface Modules, Low-Cost Sensor Hubs, Industrial Keypad and Remote Modules, Educational MCU Training Boards.
Automotive LIN-Bus Body Control
The MC9S08SE8MRL is well suited to LIN-bus slave nodes in automotive body electronics because its integrated SCI/LIN peripheral supports LIN 1.3/2.0/2.1 protocol with auto-baud detection, while the 22 GPIO lines can drive window-lift switches, mirror adjust motors, seat-position sensors, and HVAC damper signals. At 20 MHz the HCS08 core runs a typical LIN slave stack (including checksum, frame handling, and transport layer) with comfortable timing margin. Operate the part from the vehicle's 12V rail after a 5V LDO. The 28-PDIP package simplifies prototyping on early engineering builds.
Empfohlen
Home Appliance Control Boards
The MC9S08SE8MRL fits washing-machine, dishwasher, microwave, and small appliance main control boards where its 8KB Flash holds application code, 20 MHz HCS08 drives PWM-controlled motor/valve actuators, and the 2.7V-5.5V supply tolerance simplifies both 5V (legacy) and 3.3V (modern) rail designs. The 22 GPIO lines interface keypads, LED indicators, relay drivers, and triac-based AC power control. The 28-PDIP through-hole package also streamlines prototyping and rework on legacy appliance boards.
Empfohlen
Consumer Electronics User Interface Modules
For remote controls, keypads, small LCD status displays, and home audio front-panel modules, the MC9S08SE8MRL provides ample I/O and Flash for handling button scanning, LED dimming via PWM, I2C/SPI peripheral control, and communication with a host mainboard over SCI or LIN. Its 5V-tolerant I/O simplifies legacy interface bridging, while multiple low-power modes support battery-friendly designs. The 8KB Flash comfortably holds a state-machine UI plus diagnostic logging on remote-control firmware.
Empfohlen
Low-Cost Sensor Hubs
The MC9S08SE8MRL serves as a hub MCU in industrial sensor aggregators, with I2C/SPI master capability to read multiple external sensors (temperature, pressure, humidity) and SCI/UART forwarding to a gateway. Its 20 MHz HCS08 can sample 8-10 sensors at 100 Hz while running a small RTOS-style scheduler. Industrial-supply 3.3V/5V operation, watchdog timer, and LVD brown-out protection suit unattended remote deployments. The wide operating-temperature range supports outdoor cabinets with basic thermal management.
Empfohlen
Industrial Keypad and Remote Modules
Use the MC9S08SE8MRL for industrial keypad entry controllers and remote control panels where its 22 GPIO lines drive matrix keypads (up to 4x4 with software scanning), status LEDs, and piezo buzzer signaling. The hardware WDT and LVD prevent lockup in unattended installations. The on-chip PWM drives buzzer tones without external timer ICs. Through-hole 28-PDIP simplifies hand-rework in panel-mount designs with industrial mounting hardware.
Empfohlen
Educational MCU Training Boards
The MC9S08SE8MRL's low cost, breadboard-friendly 28-PDIP package, and standard HCS08 BDM debug interface make it a strong choice for university embedded systems labs and starter kits. Students can program GPIO, PWM timers, ADC, and serial peripherals with the free NXP CodeWarrior IDE or GCC-HCS08 toolchain. The 8KB Flash accommodates introductory projects, and migrating to larger S08 family members is straightforward when projects scale. P&E Multilink BDM debuggers provide a familiar, repeatable lab experience.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für MC9S08SE8MRL – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | MC9S08SE4MRL | MC9S08SE8MRLG | MC9S08QE8CWL | MC9S08SH8CPJ |
|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 28-PDIP (DIP-28) | 28-PDIP (DIP-28) - same | 28-PDIP (DIP-28) - same | 28-PDIP/SOIC source | 28-PDIP (DIP-28) - same |
| Core | S08 HCS08 (8-bit CISC) | S08 HCS08 (8-bit) | S08 HCS08 (8-bit) | S08 HCS08 (8-bit) | S08 HCS08 (8-bit) |
| Max Clock Speed | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| Program Flash | 8KB | 4KB (-50%) | 8KB | 8KB | 8KB |
| Peripherals | I2C, LINbus, SCI, SPI, PWM, WDT, LVD | I2C, LINbus, SCI, SPI, PWM, WDT, LVD (same) | Same (parametrically identical) | I2C, LINbus, SCI, SPI, PWM, WDT, LVD | I2C, SCI, SPI, PWM, WDT, LVD (no LIN) |
Wichtigste Unterscheidungsmerkmale
- Through-hole 28-PDIP package for breadboard/legacy compatibility (vs. MC9S08QE8CWL)
- Wider supply-voltage range including 5V industrial buses (vs. MC9S08QE8CWL)
- On-chip LIN-bus peripheral for automotive body-electronics (vs. MC9S08SH8CPJ)
- Larger Flash than SE4 family member (vs. MC9S08SE4MRL)
Designhinweise
Place a 100nF (0.1uF) ceramic decoupling capacitor within 5mm of each VDD pin, plus a bulk 10uF tantalum or aluminum electrolytic at the regulator output. The S08SE family operates from 2.7V to 5.5V; ensure your upstream regulator has adequate headroom and includes a power-on-reset, since the MCU also has an internal LVD. For battery-powered designs, leverage the STOP and WAIT low-power modes - CPU core current drops dramatically in STOP with the RTI running.
Keep the BDM (Background Debug Mode) lines BKGD and RESET routed so they are accessible in-circuit for programming, even on production boards. Long traces on these lines can cause programming failures due to capacitance - keep them under 10cm if possible. Add a pull-up on RESET to VDD (typically 10k) and a small capacitor (~100nF) to RESET for noise immunity in noisy industrial/automotive environments. Avoid routing high-frequency switching signals near the oscillator pins.
Do not apply signals to any I/O pin before power is applied - this can latch-up the part through the ESD protection diodes. Always ensure VDD rises monotonically on power-up. The Flash has an endurance of typically 10k write cycles per block - implement wear-leveling in your EEPROM emulation scheme. Watchdog timer must be refreshed periodically or the MCU resets; configure WDT in long-timeout mode for noisy environments and avoid long ISR-disabled sections. Estimated: minimum WDT refresh interval is one full instruction cycle at 20 MHz (50ns), but practical timeouts should be hundreds of ms.
When using the SCI/LIN peripheral at high baud rates, place a series resistor (10-100 ohm) at the TX/RX lines to reduce ringing into the bus transceivers. The SPI bus clock can run up to the bus clock divided by 2 (effectively 10 MHz at 20 MHz CPU); in multi-device SPI buses, ensure CS-to-clock timing meets the slowest slave's setup requirement. I2C requires 4.7k pull-ups on SDA/SCL for standard-mode (100 kHz); use 2.2k for fast-mode (400 kHz) and verify against the slave's pin-cap spec.
Compliance-Informationen
RoHS compliance inferred from distributor listing ('Rohs: Compliant' per Heisener). REACH, halogen-free, and conflict-minerals status not explicitly stated in provided data; AEC-Q100 not qualified at base part number. For automotive-grade variants, look for Q1-suffixed NXP MPNs.
