MC68HC908QT2MPE - 8-Bit HC08 MCU 1.5KB Flash 8-PDIP | NXP
Teilenummer: MC68HC908QT2MPE ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $3.85 | $3,85 |
| 10 | $3.42 | $34,20 |
| 100 | $2.78 | $278,00 |
| 500 | $2.35 | $1.175,00 |
| 1.000 | $1.95 | $1.950,00 |
MC68HC908QT2MPE Übersicht
A microcontroller (MCU) is a single-chip computer that integrates a CPU, memory, and peripherals on one die, and 8-bit MCUs like the MC68HC908QT2MPE occupy the low-end of the embedded controller hierarchy: 8-bit CPU -> microcontroller unit (MCU) -> embedded controller -> semiconductor IC. The M68HC08 family is a Complex Instruction Set Computer (CISC) with a Von Neumann architecture, descended from the long-running Motorola 68HC05 line and used as the migration path for legacy 6805/68HC05 designs. 8-bit MCUs remain widely deployed in appliances, toys, simple motor control, and human-interface products where 32-bit processing power is unnecessary.
Key specifications of the MC68HC908QT2MPE include 1.5KB (1.5K x 8) of FLASH, 128 bytes of RAM, an 8MHz maximum bus clock, an integrated ADC, and a wide operating voltage range typical of the HC08 Q-Tiny series. The 8-PDIP package provides through-hole mounting suitable for prototyping, hobby projects, educational kits, and legacy board repairs. The device supports in-system FLASH programming via the standard HC08 background debug mode (BDM), simplifying firmware development and field updates.
Typical applications include low-cost consumer appliances, white-goods control boards, electronic toys, lighting controllers, small motor drivers, and remote-control units. The 8-PDIP package is especially suited to hobbyist and educational platforms (Arduino-shield style boards, training kits) where hand-soldering or breadboarding is required, and to long-life industrial equipment that needs a stable, multi-sourced 8-bit MCU with predictable supply.
When designing with this device, note that newer HC08/HC(S)08 derivatives offer more memory and features in the same footprint; if more RAM, FLASH, or peripherals are required, evaluate the larger Q-Tiny variants before committing to the MC68HC908QT2MPE. Always verify pin assignments against the current NXP datasheet because the Q-Tiny family shares pinouts across many part numbers but specific peripheral assignments vary.
This page synthesizes distributor stock, drop-in alternatives, and design notes not found in the manufacturer datasheet.
Drop-in-Alternativen für MC68HC908QT2MPE – 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 MC68HC908QT2MPE (gleiche Bauform und Footprint) – abweichend in Core Processor, Package, Mounting Type, Program Memory Size, RAM Size.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
MC68HC908QT4MPE
✅ Drop-In ⚠️ Spezifikationen ungeprüft📋 Referenzalternative (nicht im Katalog)
MC68HC908QT1MPE
✅ Drop-In ⚠️ Spezifikationen ungeprüft✓ Auf Lager
$1.95 / Stück
Datenblatt ansehen →MC908QT2ACPE
✅ Drop-In✓ Auf Lager
$0.75 / Stück
Datenblatt ansehen →MC68HC908QY2MPE
✅ Drop-In ⚠️ Spezifikationen ungeprüft✓ Auf Lager
$2.41 / Stück
Datenblatt ansehen →MC908QY2ACPE
✅ Drop-In ⚠️ Spezifikationen ungeprüft✓ Auf Lager
$5.1 / Stück
Datenblatt ansehen →MC68HC908QT2MPE Grenzwerte & elektrische Eigenschaften
| Manufacturer | NXP Semiconductors (formerly Motorola/Freescale) |
| Series | M68HC08 HC08 Q-Tiny |
| Core Processor | 68HC08 (HC08) |
| Core Size | 8-Bit |
| Maximale Taktfrequenz | 8 MHz |
| Program Memory Size | 1.5 KB (1.5K x 8) FLASH |
| RAM Size | 128 B |
| Gehäuse | 8-PDIP (0.300 inch, 7.62 mm) |
| Montageart | Through Hole |
| Peripherals | ADC, Timer, POR (Power-On Reset), LVI (Low-Voltage Inhibit) |
| Betriebstemperatur | -40C to +85C (typical industrial range) |
MC68HC908QT2MPE Pin-Konfiguration
| Pin 1 | VDD — Positive supply voltage |
| Pin 2 | OSC1 — External clock/crystal input |
| Pin 3 | OSC2 — External clock/crystal output |
| Pin 4 | RST — Reset input (active low) |
| Pin 5 | PTB0/ADP0 — Port B bit 0 / ADC channel 0 |
| Pin 6 | PTB1/ADP1 — Port B bit 1 / ADC channel 1 |
| Pin 7 | PTA0/TIMCH1 — Port A bit 0 / Timer channel 1 |
| Pin 8 | VSS — Ground |
Typische Anwendungen
MC68HC908QT2MPE ist geeignet für 6 Anwendungs: Low-Cost Consumer Appliance Control, LED Lighting and Dimmer Controllers, Electronic Toys and Hobby Projects, Small Motor and Solenoid Drivers, Remote Control and IR/RF Transmitters, Industrial Sensor Signal Conditioning.
Low-Cost Consumer Appliance Control
The MC68HC908QT2MPE is well suited to consumer appliance control boards such as toasters, coffee makers, and small kitchen devices. With 1.5KB FLASH and 128B RAM it has just enough program space for simple state-machine control of relays, heaters, and indicators. The on-chip ADC samples thermistor or potentiometer inputs for closed-loop temperature or timer control. Compared with newer ARM Cortex-M0 parts, the 8-bit HC08 keeps BOM cost and firmware complexity lower for fixed-function appliances. The 8-PDIP package is also preferred by appliance manufacturers who maintain hand-soldering rework lines for in-field service.
Empfohlen
LED Lighting and Dimmer Controllers
The MC68HC908QT2MPE can drive simple LED lighting and dimmer controllers where its ADC measures ambient light or potentiometer position and its timer generates PWM dimming waveforms. The 8MHz HC08 core is sufficient for 8-bit PWM at audio-friendly switching rates, and STOP/WAIT modes lower standby power when the lamp is off. Compared with dedicated LED driver ICs, this approach gives the designer full firmware control of dim curves and color-mixing sequences. The 8-PDIP package drops into legacy through-hole dimmer boards without PCB rework.
Empfohlen
Electronic Toys and Hobby Projects
The MC68HC908QT2MPE is a popular choice for electronic toys, educational kits, and hobbyist projects because its 8-pin PDIP form factor plugs into breadboards and IC sockets with no soldering required. With 1.5KB FLASH students can implement small interactive programs - reaction games, IR remote control, or line-following robots - using the HC08 Background Debug Mode for step-debugging. The HC08 instruction set is well documented and supported by free CodeWarrior IDE versions, lowering the entry barrier for learning embedded programming.
Empfohlen
Small Motor and Solenoid Drivers
The MC68HC908QT2MPE can orchestrate small DC motors, solenoids, and stepper actuators in applications such as automatic valves, vending machines, and small-format printers. Its on-chip timer generates PWM for variable-speed drive, while the ADC monitors current-sense feedback for stall protection. The HC08 core's deterministic interrupt latency is well suited to real-time motor commutation, especially for sensored BLDC at moderate speeds. Compared with a pure analog control board, the MCU-based approach gives flexible firmware-defined motion profiles.
Empfohlen
Remote Control and IR/RF Transmitters
The MC68HC908QT2MPE fits hand-held remote control units for TVs, fans, and industrial key fobs where it scans keypads, encodes IR or RF protocols, and sleeps between button presses. The 128-byte RAM holds the protocol state machine and transmit buffers, while the 1.5KB FLASH stores multiple protocol stacks. STOP mode current is low enough for years of standby on coin-cell batteries, and the 8-PDIP package keeps assembly simple. Compared with dedicated encoder ICs, the programmable MCU approach supports user-customizable button maps and rolling-code security.
Empfohlen
Industrial Sensor Signal Conditioning
In industrial sensor interfaces the MC68HC908QT2MPE serves as a small front-end controller that reads analog sensors via the on-chip ADC, applies linearization or filtering in firmware, and outputs the result on a digital bus. The wide HC08 operating temperature range and HCMOS noise immunity make it tolerant of factory-floor environments, and the 8-PDIP package survives vibration better than fine-pitch SMD alternatives. Compared with a discrete op-amp signal chain, the firmware-based approach allows in-field recalibration and protocol updates.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für MC68HC908QT2MPE – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | MC68HC908QT4MPE | MC68HC908QT1MPE | MC908QT2ACPE | MC68HC908QY2MPE | MC908QY2ACPE |
|---|---|---|---|---|---|---|
| Package | 8-PDIP (0.300 inch) | 8-PDIP - same | 8-PDIP - same | 8-PDIP - same | 8-PDIP - same | 8-PDIP - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Core | 68HC08 (8-bit) | 68HC08 (8-bit) | 68HC08 (8-bit) | 68HC08 (8-bit) | 68HC08 (8-bit) | 68HC08 (8-bit) |
| Program Memory (FLASH) | 1.5 KB | 4 KB | 1 KB | 1.5 KB | 1.5 KB | 1.5 KB |
| RAM | 128 B | 128 B | 128 B | 128 B | 128 B | 128 B |
| Maximum Clock Frequency | 8 MHz | 8 MHz | 8 MHz | 8 MHz | 8 MHz | 8 MHz |
| ADC | Yes (multi-channel) | Yes (multi-channel) | Yes (multi-channel) | Yes (multi-channel) | Yes (multi-channel) | Yes (multi-channel) |
| Die Revision | Original Motorola/Freescale mask set | Original mask set | Original mask set | Updated mask set (A) | Original mask set | Updated mask set (A) |
Wichtigste Unterscheidungsmerkmale
- Larger program memory at the same 8-PDIP footprint (vs. MC68HC908QT4MPE)
- Newer silicon revision with reduced errata (vs. MC908QT2ACPE)
- Reduced FLASH for cost-sensitive designs (vs. MC68HC908QT1MPE)
Designhinweise
Estimated: at 5V VDD and 8MHz bus clock, the HC08 core draws roughly 5-10 mA in active mode and drops to single-digit microamps in STOP mode. Decouple VDD with a 100nF ceramic capacitor placed within 5mm of pin 1, and add a bulk 10uF electrolytic on the supply rail for high-current GPIO switching transients. Use the LVI (Low-Voltage Inhibit) reset to guarantee clean startup below the minimum operating VDD.
Place the external crystal or resonator within 5mm of pins 2 (OSC1) and 3 (OSC2) and guard the traces with a ground pour to reduce EMI pickup. Keep ADC input traces (PTB0/PTB1) short and away from switching nodes to avoid coupled noise that would degrade ADC accuracy. The 8-PDIP through-hole footprint allows wide creepage on industrial boards but watch for solder-bridge shorts on hand-assembled prototypes.
Do not assume pin 1 is VDD on every Q-Tiny variant - check the specific datasheet pinout for the exact MPN before connecting power. The HC08 Background Debug Mode (BDM) requires the BKGD pin to be pulled high during reset for normal operation; a floating BKGD line can leave the part in debug mode after power-up. Always lock the FLASH security byte once firmware development is complete to prevent unauthorized code readback.
Compliance-Informationen
Detailed compliance values not available in verified web data; check the NXP product page or manufacturer datasheet for RoHS, lead-free, and REACH status.
