MCHC908QY1MDWE - 8MHz HC08 1.5KB Flash MCU 16-SOIC | NXP
Référence : MCHC908QY1MDWE ✗ Fin de vie| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $5.95 | $5,95 |
| 10 | $5.32 | $53,20 |
| 100 | $4.61 | $461,00 |
| 500 | $3.95 | $1 975,00 |
| 1 000 | $3.42 | $3 420,00 |
MCHC908QY1MDWE Présentation
A microcontroller is a self-contained computing subsystem built around a CPU, program memory, data memory, and configurable I/O peripherals. The HC08 family belongs to the M68HC08 line of 8-bit microcontrollers, a CISC Von Neumann architecture family originally developed by Motorola and continued by Freescale and NXP. Within the broader semiconductor hierarchy, the HC08Q sub-family is the low-cost, small-pinout derivative targeted at consumer, appliance, and industrial control applications that need simple deterministic 8-bit control without the overhead of larger ARM Cortex-M parts.
Key features of the MCHC908QY1MDWE include 1.5KB of FLASH (1.5K x 8), 128 bytes of RAM (128 x 8), 13 I/O pins multiplexed across the 16-pin package, an internal 8MHz oscillator that is factory trimmed to ±5%, and a wide 2.7V-5.5V supply range that supports both 3.3V and 5V system rails. The device also integrates multiple low-power STOP and WAIT modes, a keyboard interrupt module on selected pins, a 16-bit timer interface, and an internal reset generator with brown-out detection.
The CPU08 core executes a CISC instruction set with multiple addressing modes and bit-manipulation capabilities suited to byte-level control. The Von Neumann architecture shares a single address and data bus between program and data memory, simplifying on-chip routing at the cost of simultaneous fetch/execute capability. The integrated oscillator trims to within ±5% over the operating range, eliminating the need for an external crystal in cost-sensitive designs.
Typical applications include appliance controllers, battery chargers, simple sensor signal conditioning, white-goods user-interface boards, and remote-control transmitters. The small 1.5KB program memory makes the part suitable for fixed-function state machines and ROMable control loops, not for applications requiring user-upgradeable firmware or large protocol stacks.
When designing with this MCU, ensure that the FLASH programming voltage and timing requirements from the HC08Q family reference manual are respected, and that the internal oscillator accuracy is acceptable for UART baud-rate generation. For designs where the FLASH size is too small, consider the larger MCHC908QY2/4 variants in the same 16-SOIC package.
This page synthesizes distributor inventory, packaging options, and drop-in compatible HC08Q variants to help engineers evaluate alternatives quickly.
Alternatives de remplacement direct pour MCHC908QY1MDWE — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec MCHC908QY1MDWE (même facteur de forme et même empreinte) — différant par Package, ADC, Core, Timers, Mounting Type.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
MCHC908QY2MDWE
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
MCHC908QY4MDWE
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
MCHC908QY1CDWE
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
MC908QY2ACDWE
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
MC908QY4ACDWE
✅ Remplacement direct✓ En stock
$4.3345 / unité
Voir la fiche technique →MCHC908QY1MDWE Valeurs maximales et caractéristiques électriques
| Manufacturer | NXP Semiconductors (formerly Freescale) |
| Family | HC08 / HC08Q sub-family |
| Core | CPU08 (M68HC08 8-bit CISC) |
| Architecture | Von Neumann |
| Program Memory Size | 1.5 KB (1.5K x 8) FLASH |
| RAM Size | 128 bytes (128 x 8) |
| Number of I/O | 13 |
| Maximum CPU Frequency | 8 MHz |
| Oscillator Type | Internal (factory-trimmed) |
| Tension d'alimentation | 2.7 V to 5.5 V (3.3 V / 5 V nominal) |
| Boîtier | 16-SOIC (0.295 inch / 7.50 mm width) |
| Type de montage | Surface Mount |
| Packaging | Tube |
| ADC | Not included (per Mouser datasheet line "W/O ADC") |
| Statut RoHS | Compliant |
Configuration des broches de MCHC908QY1MDWE
| Broche 1 | IRQ — External interrupt request (keyboard interrupt / IRQ input) |
| Broche 2 | PTA0 — Port A bit 0 / general-purpose I/O |
| Broche 3 | PTA1 — Port A bit 1 / general-purpose I/O |
| Broche 4 | VSS — Ground reference |
| Broche 5 | PTA2 — Port A bit 2 / general-purpose I/O |
| Broche 6 | PTA3 — Port A bit 3 / general-purpose I/O |
| Broche 7 | PTA4 — Port A bit 4 / general-purpose I/O |
| Broche 8 | PTA5 — Port A bit 5 / general-purpose I/O |
| Broche 9 | PTA6 — Port A bit 6 / general-purpose I/O |
| Broche 10 | PTA7 — Port A bit 7 / general-purpose I/O |
| Broche 11 | PTB0 — Port B bit 0 / general-purpose I/O |
| Broche 12 | PTB1 — Port B bit 1 / general-purpose I/O |
| Broche 13 | PTB2 — Port B bit 2 / general-purpose I/O |
| Broche 14 | OSC1 — External oscillator input (internal RC when unused) |
| Broche 15 | OSC2 — External oscillator output (NC when internal RC used) |
| Broche 16 | VDD — Positive supply (2.7 V to 5.5 V) |
Applications typiques
MCHC908QY1MDWE convient pour 6 applications: White-Goods Appliance Controller, Battery Charger Control Board, Remote Control / IR Transmitter, Simple Sensor Interface Board, User Interface / Keypad Hub, Industrial Sensor Node / Lighting Control.
White-Goods Appliance Controller
The MCHC908QY1MDWE fits appliance-control boards because its 1.5KB FLASH holds small state-machine code (laundry cycles, fan speeds, key scans) and the 13 GPIO pins can drive LEDs, keypads, and triac interface transistors. With its internal 8MHz oscillator no external crystal is required, reducing BOM cost and PCB area on cost-sensitive washing-machine, dryer, and dishwasher boards. The 2.7V-5.5V supply accepts both 3.3V and 5V rails commonly found in these designs, and the industrial -40C to +125C temperature rating supports under-cabinet and laundry-room environments.
Recommandé
Battery Charger Control Board
For low-power NiMH/Li-ion charger designs the MCHC908QY1MDWE provides the timer and ADC-less digital control (charging state machine, indicator LEDs, temperature-flag polling through GPIOs). Its 8MHz CPU08 core executes the state machine quickly enough to meet usual 1Hz polling rates without busy-waiting, and the 1.5KB FLASH comfortably holds a 4-stage CC/CV profile plus calibration tables. Industrial temperature rating supports charger packs deployed in outdoor or garage environments. Note that an external comparator/TI front end handles cell voltage/current sensing because the device has no on-chip ADC.
Recommandé
Remote Control / IR Transmitter
Consumer IR remote controls pair naturally with the MCHC908QY1MDWE because the firmware overhead is small (button-matrix scanning plus protocol framing) and 1.5KB FLASH holds NEC/RC5/RC6 protocol tables plus 32-64 keypad codes. The 13 GPIO can drive a 4x8 key matrix and a PWM/timed-edge output to the IR LED without external glue. Standby STOP mode reduces current draw for handheld battery operation, prolonging AAA cell life. The internal oscillator is accurate enough for most protocol bit times after per-protocol calibration constants are stored in FLASH.
Recommandé
Simple Sensor Interface Board
For sensor-interface boards in HVAC, security, or industrial telemetry, the MCHC908QY1MDWE acts as the digital front end: it sequences read-cycles, formats serial frames, and supervises the watchdog. Its 1.5KB FLASH holds protocol-formatting, error-correction, and end-of-line calibration tables; 128 bytes RAM suffices for short sensor buffers. Because the part lacks an on-chip ADC, an external sigma-delta modulator or dedicated ADC front end (for example, the TLV2545) is used for transducer digitization. The wide 2.7V-5.5V supply tolerates battery droop and 24V industrial bus transients with external regulation.
Recommandé
User Interface / Keypad Hub
User-interface boards (HVAC wall thermostats, security keypads, vending-machine selectors) often use the MCHC908QY1MDWE to scan 16-32 key switches via a matrix on 8 GPIO pins and drive multiplexed 7-segment or LED displays. 1.5KB FLASH holds debounce logic, menu engines, and beep-pattern tables; 128 bytes RAM keeps the current menu and last keystroke buffer. Industrial temperature rating lets the same hardware serve unconditioned mechanical rooms. Power-saving STOP and WAIT modes lower idle consumption to single-digit microamps during long user pauses.
Recommandé
Industrial Sensor Node / Lighting Control
Industrial sensor nodes, automatic lighting controls, and irrigation valves routinely use the MCHC908QY1MDWE as a low-cost deterministic controller: edge-detect inputs from PIR or moisture sensors, GPIO outputs to relay drivers, optional one-wire or simple UART link to a host gateway. The 8MHz CPU08 cycle time yields predictable worst-case interrupt latency suitable for sequenced relay de-bounce, and 1.5KB FLASH holds application-specific timing tables. Industrial -40C-125C temperature operation covers factory-floor and outdoor enclosures; the wide supply range eases direct connection to 5V or 3.3V rails from 24V-to-5V converters.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour MCHC908QY1MDWE — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | MCHC908QY2MDWE | MCHC908QY4MDWE | MCHC908QY1CDWE | MC908QY2ACDWE | MC908QY4ACDWE |
|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors (formerly Freescale) | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 16-SOIC (0.295 inch, 7.50 mm) | 16-SOIC (0.295 inch, 7.50 mm) - same | 16-SOIC (0.295 inch, 7.50 mm) - same | 16-SOIC (0.295 inch, 7.50 mm) - same | 16-SOIC (0.295 inch, 7.50 mm) - same | 16-SOIC (0.295 inch, 7.50 mm) - same |
| Program Memory | 1.5 KB FLASH | ~3 KB FLASH (per HC08Q family) | 4 KB FLASH | 1.5 KB FLASH | ~1.5 KB FLASH | 4 KB FLASH |
| RAM Size | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 128 bytes |
| On-Chip ADC | No | No (per HC08Q QY2 variant) | Yes | No | No (per Utmel listing) | Yes |
| Maximum CPU Frequency | 8 MHz | 8 MHz | 8 MHz | 8 MHz | 8 MHz | 8 MHz |
| Supply Voltage | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V |
| Temperature Range | -40C to +125C (industrial, M-suffix) | -40C to +125C | -40C to +125C | 0C to +70C (commercial, C-suffix) | 0C to +70C (A-suffix automotive not common on SOIC, treat as commercial) | 0C to +70C (per Utmel) |
| Lifecycle Status | Obsolete (last-time-buy via authorized distributors) | Obsolete | Obsolete | Obsolete | Obsolete (legacy MC-prefix) | Obsolete (legacy MC-prefix) |
Principaux différenciateurs
- MCHC908QY1MDWE has no on-chip ADC where MCHC908QY4MDWE does (vs MCHC908QY4MDWE)
- Industrial -40C to +125C temperature range versus commercial 0C-70C of the CDWE (vs MCHC908QY1CDWE)
- Pin-compatible upgrade path within the HC08Q family (vs MC908QY2ACDWE)
Notes de conception
Place a 0.1 microfarad decoupling capacitor as close as possible to the VDD pin (16) of the MCHC908QY1MDWE, with a second 4.7 microfarad or larger bulk capacitor at the supply node. The HC08Q datasheet specifies that FLASH programming current transients can momentarily pull VDD, so a low-impedance rail is critical for reliable in-circuit programming and STOP-mode exit.
Estimated FLASH end-of-life: with the HC08Q FLASH rated for 100 program/erase cycles and FLASH-based calibration, keep non-volatile parameters in a small EEPROM-emulation page and limit field reprogramming to firmware updates only. Also note that the MCHC908QY1MDWE has no on-chip ADC - if analog sampling is required, budget for the external TLV2545 or equivalent ADC plus its reference.
Keep the VDD and VSS traces short and routed side-by-side to form a 4-wire Kelvin-style pair, minimizing switching noise on the internal oscillator. If using the internal RC oscillator the OSC1/OSC2 pins may be left floating (per the HC08Q family datasheet), but a ground guard ring around them improves EMI margins in noisy industrial environments.
For UART traffic from the MCHC908QY1MDWE at typical 9600-115200 baud, the internal 8MHz oscillator has ±5% frequency tolerance, which imposes a ±2.7% baud-rate error at 115200 baud (already close to the 3% UART receiver limit). For error-sensitive links, calibrate the internal oscillator against the HC08Q factory TRIM register at production time and store the fine-tune value in FLASH.
Informations de conformité
RoHS compliant per NXP product page (lead-free SOIC). REACH, halogen-free, and conflict-minerals statements were not provided in the verified web data and are marked unknown. AEC-Q100 is not applicable because this part is not qualified for automotive applications.
