MC908JL8MPE - HC08 8-Bit MCU 8KB Flash 28-PDIP | NXP
Teilenummer: MC908JL8MPE ✗ Abgekündigt| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $6.95 | $6,95 |
| 10 | $5.85 | $58,50 |
| 100 | $4.78 | $478,00 |
| 500 | $4.05 | $2.025,00 |
| 1.000 | $3.6 | $3.600,00 |
MC908JL8MPE Übersicht
HC08 microcontrollers belong to the broader 8-bit microcontroller category within the microcontroller > embedded controller > semiconductor taxonomy. The HC08 instruction set is a CISC (Complex Instruction Set Computing) architecture that evolved from the earlier M68HC05 family, preserving code compatibility while adding indexed addressing modes, a wider stack pointer, and a cleaner interrupt model. Compared with 4-bit controllers, the HC08 offers a meaningful step up in arithmetic performance and code density for products that outgrow a PIC16F or simple sub-€1 MCU.
Key features include 8KB Flash with in-system programming support, an 8-bit successive-approximation ADC with multiple input channels for sensor conditioning, a 16-bit timer with capture/compare/PWM capability, an asynchronous serial communications interface (SCI) for UART-style comms, and a serial peripheral interface (SPI). The 28-pin PDIP package simplifies prototyping and rework on through-hole boards, and supports operating temperatures suitable for industrial and consumer environments per the device datasheet.
The architecture pairs a simple 8-bit ALU with HC08-standard peripherals and a low-power STOP/WAIT mode, allowing battery-backed and energy-aware designs. Because the HC08JL series is mature and broadly documented, reference code and toolchains (CodeWarrior HC08, third-party assemblers, and open-source SDCC) are widely available, accelerating firmware development for new designs or for maintaining legacy equipment.
Typical applications include sub-€1 microcontroller replacement in white goods, simple motor control (small DC fans, solenoids, low-cost stepper sequencing), appliance user-interface boards, security keypad controllers, remote-control transmitters, and battery chargers. The integrated ADC and PWM make it especially well-suited to closed-loop control where external analog ICs would inflate the bill of materials.
Designers should consult the manufacturer datasheet for the exact pinout, ADC channel mapping, and Flash programming/erasure endurance ratings before committing to a layout. The 28-pin PDIP footprint allows the use of standard through-hole sockets for development and field replacement.
This page synthesizes distributor pricing, alternative MPN recommendations, and practical design notes not consolidated in the manufacturer datasheet, helping procurement and engineering teams evaluate the MC908JL8MPE against current alternatives.
Drop-in-Alternativen für MC908JL8MPE – 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 MC908JL8MPE (gleiche Bauform und Footprint) – abweichend in Manufacturer, Package.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
MC68HC908JL8MPE
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
MC908JL8CPE
✅ Drop-In✓ Auf Lager
$4.85 / Stück
Datenblatt ansehen →MC908JL8MFAE
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
MC908JL16MPE
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
MC908JK8MPE
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
MC908JL8MPE Grenzwerte & elektrische Eigenschaften
| Manufacturer | NXP Semiconductors (formerly Freescale Semiconductor) |
| Product Family | HC08 |
| Series | HC08JL |
| Core | HC08 8-bit CISC |
| Program Memory | 8 KB Flash (8K x 8) |
| RAM | 256 bytes |
| Maximum CPU Frequency | 8 MHz |
| Versorgungsspannung | 5 V |
| Gehäuse | 28-PDIP (through-hole) |
| Anzahl der Pins | 28 |
| Montageart | Through-Hole (THT) |
| ADC | 8-bit, on-chip |
| Communication Interfaces | SCI (UART), SPI |
| Timers | 16-bit timer with capture/compare/PWM |
MC908JL8MPE Pin-Konfiguration
| Pin 1 | IRQ — External interrupt request |
| Pin 2 | PTA0 — Port A bit 0 / ADC input |
| Pin 3 | PTA1 — Port A bit 1 / ADC input |
| Pin 4 | VSS — Ground |
| Pin 5 | PTA2 — Port A bit 2 / ADC input |
| Pin 6 | PTA3 — Port A bit 3 / ADC input |
| Pin 7 | PTA4 — Port A bit 4 / ADC input |
| Pin 8 | PTA5 — Port A bit 5 / ADC input |
| Pin 9 | PTA6 — Port A bit 6 / ADC input |
| Pin 10 | PTA7 — Port A bit 7 / ADC input |
| Pin 11 | VDD — Positive supply voltage |
| Pin 12 | OSC1 — Oscillator input |
| Pin 13 | OSC2 — Oscillator output |
| Pin 14 | RESET — Reset input (active low) |
| Pin 15 | PTB0 — Port B bit 0 |
| Pin 16 | PTB1 — Port B bit 1 |
| Pin 17 | PTB2 — Port B bit 2 |
| Pin 18 | PTB3 — Port B bit 3 |
| Pin 19 | PTB4 — Port B bit 4 |
| Pin 20 | PTB5 — Port B bit 5 / SPI / SCI |
| Pin 21 | PTB6 — Port B bit 6 / SPI / SCI |
| Pin 22 | PTB7 — Port B bit 7 / SPI / SCI |
| Pin 23 | PTC0 — Port C bit 0 |
| Pin 24 | PTC1 — Port C bit 1 |
| Pin 25 | PTC2 — Port C bit 2 |
| Pin 26 | PTC3 — Port C bit 3 |
| Pin 27 | PTC4 — Port C bit 4 / Timer channel |
| Pin 28 | PTC5 — Port C bit 5 / Timer channel |
Typische Anwendungen
MC908JL8MPE ist geeignet für 6 Anwendungs: White Goods and Home Appliance Control, Small DC Motor and Fan Control, Battery Charger and Power Management Controller, Security Keypad and Access Control Panels, Remote Control and IR Transmitter Firmware, Industrial Sensor and Indicator Module.
White Goods and Home Appliance Control
The MC908JL8MPE is well suited for white-goods control boards such as washing-machine user-interface panels, dishwasher timers, and microwave oven keypads, where its HC08 8-bit core at 8 MHz and 8KB Flash easily handle user-input debouncing, LED/LCD multiplexing, and triac timing. The integrated 8-bit ADC reads sensor dividers (temperature, water level, humidity) directly, eliminating external ADC ICs. The 28-pin PDIP package simplifies through-hole assembly for low-volume appliance production lines. Designers should budget I/O pins carefully because 28 pins must cover keypad scan, display drive, and relay/triac control. Compared with newer Cortex-M0 parts, the MC908JL8MPE is favored when a stable, mature, broadly-documented firmware base is required and when the supply chain still supports the HC08 family.
Empfohlen
Small DC Motor and Fan Control
For small DC fan, blower, or solenoid sequencing, the MC908JL8MPE's 16-bit timer with PWM output drives MOSFET gates directly, while the ADC monitors back-EMF or current-sense amplifiers for closed-loop speed control. The 8 MHz CPU bus is fast enough for commutation timing in slow brushless or brushed DC motors typical of consumer fans. The 28-pin PDIP footprint lets service technicians swap the MCU without surface-mount rework. The integrated 8-bit ADC removes the need for an external current-sense IC. Trade-offs include limited PWM channel count compared with dedicated motor-control MCUs, so designers running multiple simultaneous PWMs may need a higher-pin HC08 part.
Empfohlen
Battery Charger and Power Management Controller
The MC908JL8MPE serves as the supervisory controller in simple NiCd/NiMH/Li-ion charger boards, where the 8-bit ADC samples battery voltage and current-sense shunts, and PWM regulates the charger FET. Its 256-byte RAM and 8KB Flash are sufficient for charge-state machines, LED status indication, and safety timers. The HC08 CISC instruction set gives compact code for state-machine logic in charger firmware. The 5 V supply and 8 MHz bus make the part compatible with linear regulator rails common in charger designs. Designers should add hardware watchdog and brown-out support external to the MCU because HC08JL peripherals are minimal.
Empfohlen
Security Keypad and Access Control Panels
In security keypads and access-control panels, the MC908JL8MPE scans a 4x4 matrix keypad, debounces contacts in firmware, drives a status LED or piezo buzzer, and communicates with the upstream controller over SCI (UART) or SPI. The 8-bit ADC can monitor tamper switches and backup-battery voltage. The 28-PDIP package is convenient for security OEMs that prefer through-hole assembly for serviceability. EEPROM emulation through Flash stretching is a known HC08JL pattern, allowing storage of access codes and audit logs. Trade-offs include no hardware cryptographic accelerator, so cryptographic operations must run in software.
Empfohlen
Remote Control and IR Transmitter Firmware
The MC908JL8MPE is appropriate for IR/RF remote-control transmitters, where the HC08 core modulates 38 kHz carrier via PWM and reads a matrix keypad for button inputs. The 8KB Flash holds IR protocol libraries (RC-5, NEC, SIRC) plus custom button maps. Low STOP/WAIT power modes let battery-powered remotes sleep for months on a single cell pair. The integrated ADC can monitor battery voltage for low-battery indication. The 28-PDIP footprint is favored for hand-assembled prototype runs. Compared with dedicated IR-transmitter ICs, the MC908JL8MPE adds programmability at the cost of a slightly larger PCB.
Empfohlen
Industrial Sensor and Indicator Module
In industrial sensor and indicator modules, the MC908JL8MPE aggregates analog sensor inputs through its 8-bit ADC, applies calibration in firmware, and drives LED bar indicators or 7-segment displays via GPIO. The HC08 8-bit core runs simple linearization and threshold logic in real time. SCI/UART output streams data to a PLC or upstream controller. The 28-PDIP package supports standard industrial control-panel mounting. Designers should add external protection (TVS diodes, RC filters) on ADC inputs because HC08JL analog pins are not robust against industrial transients. Operating-temperature grade must be confirmed for harsh environments.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für MC908JL8MPE – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | MC68HC908JL8MPE | MC908JL8CPE | MC908JL8MFAE | MC908JL16MPE | MC908JK8MPE |
|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 28-PDIP (through-hole) | 28-PDIP - same | 28-PDIP - same | 28-PDIP - same | 28-PDIP - same | 28-PDIP - same |
| Core | HC08 8-bit | HC08 8-bit | HC08 8-bit | HC08 8-bit | HC08 8-bit | HC08 8-bit |
| Flash Memory | 8 KB | 8 KB | 8 KB | 8 KB | 16 KB (+100%) | 8 KB |
| Maximum CPU Frequency | 8 MHz | 8 MHz | 8 MHz | 8 MHz | 8 MHz | 8 MHz |
| ADC | 8-bit on-chip | 8-bit on-chip | 8-bit on-chip | 8-bit on-chip | 8-bit on-chip | 8-bit on-chip (fewer channels) |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
Wichtigste Unterscheidungsmerkmale
- Larger Flash for code growth (vs. MC908JL16MPE)
- Lower ADC channel count, smaller die (vs. MC908JK8MPE)
- Original 68HC908 prefix variant (vs. MC68HC908JL8MPE)
Designhinweise
The HC08JL core is specified for a 5 V supply; the on-chip voltage regulator should be bypassed with a 100 nF decoupling capacitor placed within 5 mm of the VDD pin and a 10 uF bulk capacitor on the same rail. Decouple each ADC reference pin separately to reduce digital-noise coupling into analog readings. For battery-powered designs, leverage the STOP and WAIT low-power modes and wake the MCU through the IRQ pin to minimize quiescent draw.
Route the oscillator traces (OSC1/OSC2) short and symmetrically with a guard ground to avoid radiated-clock interference coupling into analog inputs. Place the IC socket or PDIP footprint on a single 2.54 mm pitch grid so prototype substitution with other HC08JL family parts does not require PCB rework. Keep ADC traces away from PWM or relay-switching traces to minimize digital crosstalk on analog readings.
Verify the Flash programming/erase endurance rating before committing to firmware update strategies that depend on frequent Flash writes; HC08JL endurance is lower than modern EEPROM and Flash wear must be budgeted. Confirm the IRQ and RESET pin behavior (active level, internal pull-up presence) before adding external pull components; adding an external pull-up where one already exists can cause start-up glitches. Always check the exact ADC channel-to-pin mapping for the specific 28-PDIP variant because pin numbering may differ across HC08 sub-series.
Compliance-Informationen
RoHS/REACH compliance status not stated in the verified web data for this obsolete part. AEC-Q100 not applicable because the part is not automotive-qualified.
