MC9S08QG4CPAE - 8-bit HCS08 MCU, 4KB Flash, 20MHz | NXP
Teilenummer: MC9S08QG4CPAE ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $2.85 | $2,85 |
| 10 | $2.52 | $25,20 |
| 100 | $2.18 | $218,00 |
| 500 | $1.92 | $960,00 |
| 1.000 | $1.71 | $1.710,00 |
MC9S08QG4CPAE Übersicht
An 8-bit microcontroller is a small, single-chip computer built around an 8-bit data path that integrates a CPU, non-volatile program memory (typically Flash), volatile data memory (RAM), peripherals such as timers and ADC channels, and digital I/O into one package. Within the broader taxonomy, the MC9S08QG4 belongs to the HCS08 family of 8-bit MCUs, which sits under the S08 low-power family, which in turn belongs to NXP/Freescale's legacy 8-bit microcontroller portfolio. It is typically used where BOM cost, package size, and low active power are more critical than raw compute throughput.
Key features include a background debug controller (BDC) that allows single-breakpoint in-circuit debug without an external emulator, an internal clock generator that often eliminates the need for an external crystal in cost-sensitive designs, low-power run, wait and stop modes for battery-friendly operation, and an on-chip 10-bit ADC with a 4-channel input mux suitable for slow sensor sampling. The 8-pin PDIP package is friendly for hand-soldered prototypes and hobby/learning platforms.
Architecturally, the device is implemented on a low-leakage CMOS process and uses a CISC-style HCS08 instruction set (HC08 upward-compatible with added BGND). It supports 16-bit addressing via H:X index register and offers hardware multiplier via the MUL instruction, which helps in modestly accelerating integer math routines despite the 8-bit datapath.
Typical applications include consumer appliance control, low-end touch keypads, LED controllers, battery-powered handheld sensors, and educational/learning kits. It is also commonly used as a small system-management controller or as a simple I/O expander with local intelligence in larger designs.
Designers should keep in mind that the 8-pin PDIP package exposes only 6 GPIO pins, so aggressive pin multiplexing (ADC, I2C, SCI/KBI/IRQ) is required. Plan the pin map early to avoid I/O conflicts, and reserve the PTA5/RESET pin consideration if using external reset hardware.
This page consolidates distributor pricing, true drop-in alternatives within the S08 family, and practical design guidance not found in the manufacturer datasheet alone.
Drop-in-Alternativen für MC9S08QG4CPAE – 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 MC9S08QG4CPAE (gleiche Bauform und Footprint) – abweichend in Package, Mounting Type, ADC, Communication, I/O Pins.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
MC9S08QG8CPAE
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
MC9S08QA4CPAE
✅ Drop-In✓ Auf Lager
$1.6667 / Stück
Datenblatt ansehen →MC9S08QA2CPAE
✅ Drop-In✓ Auf Lager
$1.55 / Stück
Datenblatt ansehen →MC9S08QG4CPAE Grenzwerte & elektrische Eigenschaften
| Core Architecture | HCS08 (8-bit, enhanced HC08 core) |
| Maximum CPU Frequency | 20 MHz |
| Program Memory (Flash) | 4 KB (4K x 8) |
| RAM | 256 B |
| Supply Voltage Range | 1.8 V to 3.6 V |
| I/O Pins | 6 |
| ADC | 10-bit, 4-channel |
| Gehäuse | 8-pin PDIP (CPAE) |
| Montageart | Through-Hole |
| Debug Interface | Background Debug Controller (BDC), single breakpoint |
| Internal Clock | Yes (ICS with FLL, often removes need for external crystal) |
| Timers | TPM (Timer/PWM Module) |
| Communication | SCI (UART), optional I2C(2) |
| Betriebstemperatur | -40 C to +85 C (industrial) |
| RoHS-Status | Compliant |
MC9S08QG4CPAE Pin-Konfiguration
| Pin 1 | PTB5/KBI1P5/TCLK/RESET — General-purpose I/O / Keyboard interrupt / Timer clock / Reset (shared) |
| Pin 2 | PTB4/KBI1P4/ADP5 — GPIO / KBI / ADC channel 5 |
| Pin 3 | VDD — Positive supply voltage (1.8 V to 3.6 V) |
| Pin 4 | VSS — Ground |
| Pin 5 | PTA5/IRQ/TCLK/RESET — GPIO / External interrupt / Timer clock / Reset |
| Pin 6 | PTA4/ADP4 — GPIO / ADC channel 4 |
| Pin 7 | PTA3/ADP3 — GPIO / ADC channel 3 |
| Pin 8 | PTA0/ADP0 — GPIO / ADC channel 0 |
Typische Anwendungen
MC9S08QG4CPAE ist geeignet für 7 Anwendungs: Battery-powered sensor nodes, Consumer appliance control, LED lighting controllers, Remote controls / IR emitters, Educational / learning platforms, HVAC thermostat sub-controllers, Toy and hobby electronics.
Battery-powered sensor nodes
Why MC9S08QG4CPAE fits: the device's 1.8 V to 3.6 V supply range and sub-microamp stop-mode currents let it run directly from a single-cell Li-ion or 2x AA battery, while the 4-channel 10-bit ADC samples temperature, light, or other low-bandwidth sensors without an external analog front end. How it is used: the firmware wakes on ADC completion or KBI interrupt, takes a reading, and returns to stop mode; the 256-byte RAM is sufficient for sliding-window sensor averaging. Trade-off vs alternatives: the PIC12F1822 in PDIP-8 offers a more sophisticated ADC with auto-acquisition but at higher cost; the MC9S08QG4CPAE wins on BOM cost and toolchain maturity for simple sensor duty cycles.
Empfohlen
Consumer appliance control
Why MC9S08QG4CPAE fits: its 20 MHz HCS08 core executes small control loops (PWM, sensor polling, button handling) with deterministic timing; 4 KB Flash covers typical washing-machine or microwave UI logic, and the 8-pin PDIP through-hole package supports hand-soldered low-volume assembly. How it is used: the TPM drives TRIAC or MOSFET control, KBI pins handle front-panel buttons, and SCI connects to a main board MCU. Trade-off vs alternatives: the larger QG8 (8 KB Flash) variant supports richer UI; the QG4 wins on cost when the UI is minimal.
Empfohlen
LED lighting controllers
Why MC9S08QG4CPAE fits: the TPM provides PWM channels suitable for LED dimming control, while the 6 GPIOs can drive indicator LEDs, sense a photosensor via ADC, and read a tactile button. How it is used: firmware uses the TPM PWM channel to dim a constant-current LED driver; the ADC samples a light sensor and closes a daylight-harvesting loop. Trade-off vs alternatives: the S08 core's deterministic interrupt latency simplifies zero-crossing detection versus higher-end Cortex-M0 parts.
Empfohlen
Remote controls / IR emitters
Why MC9S08QG4CPAE fits: the 8-bit core can sustain IR carrier generation via timer interrupts at low power; the 256-byte RAM holds short IR command buffers, and the 1.8 V minimum supply works directly with a single CR2032 coin cell. How it is used: KBI wakes the MCU on key press, the TPM modulates a 38 kHz carrier on a GPIO, and stop mode drops current to sub-1 uA between keystrokes. Trade-off vs alternatives: PIC12F1822 offers PWM-dedicated peripherals; the QG4 wins on NXP ecosystem familiarity.
Empfohlen
Educational / learning platforms
Why MC9S08QG4CPAE fits: the 8-pin PDIP form factor drops directly into a breadboard and is hand-solderable, while CodeWarrior for S08 and the on-chip BDC provide a low-cost debug entry point. How it is used: instructors teach register-level GPIO, ADC, and timer programming without the toolchain overhead of ARM Cortex. Trade-off vs alternatives: PIC and AVR have larger hobby followings, but the QG4's on-chip BDC debug and free NXP tools remain attractive.
Empfohlen
HVAC thermostat sub-controllers
Why MC9S08QG4CPAE fits: it can read a thermistor via the 10-bit ADC, drive a relay or TRIAC via GPIO, and communicate to a main thermostat board over UART (SCI), all in a small 8-pin PDIP that fits behind the wall plate. How it is used: firmware samples temperature periodically, applies hysteresis, and toggles a heat-call relay; SCI links to the main UI MCU for setpoint updates. Trade-off vs alternatives: MCUs with more GPIO would skip external muxing; the QG4 is ideal for one-zone thermostats.
Empfohlen
Toy and hobby electronics
Why MC9S08QG4CPAE fits: the 4 KB Flash stores complex motion sequences or sound-effect triggers, and the HCS08 core runs small motor-control loops for servo or DC-motor toys. How it is used: a 6-pin GPIO bank connects to servos, an ADC input reads a potentiometer or simple sensor, and stop mode powers the toy down between interactions. Trade-off vs alternatives: cheaper 8-bit parts exist but lack BDC debug; the QG4's on-chip debug cuts prototype iteration time significantly.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für MC9S08QG4CPAE – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | MC9S08QG4MDTE | MC9S08QG8CPAE | MC9S08QG8MDTE | MC9S08QA4CPAE | MC9S08QA2CPAE |
|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | PDIP-8 (CPAE) | TSSOP-8 (cross-package) | PDIP-8 (CPAE) - same | TSSOP-8 (cross-package) | PDIP-8 (CPAE) - same | PDIP-8 (CPAE) - same |
| Core | HCS08 | HCS08 | HCS08 | HCS08 | S08QA | S08QA |
| Max CPU Frequency | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| Flash Memory | 4 KB | 4 KB | 8 KB (+100%) | 8 KB (+100%) | 4 KB | 2 KB (-50%) |
| RAM | 256 B | 256 B | 512 B | 512 B | 256 B | 128 B |
| ADC | 10-bit, 4-ch | 10-bit, 4-ch | 10-bit, 4-ch | 10-bit, 4-ch | 10-bit, 4-ch | 10-bit, 4-ch |
| Supply Voltage | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V |
| I/O Pins | 6 | 6 | 6 | 6 | 6 | 6 |
| Approx. Unit Price (USD) | $2.85 (qty 1) | ~$2.85 | ~$3.20 | ~$3.20 | ~$2.40 | ~$2.10 |
Wichtigste Unterscheidungsmerkmale
- Smaller Flash than QG8 in the same package (vs. MC9S08QG8CPAE)
- Lower-power family option (vs. MC9S08QA4CPAE)
- Through-hole PDIP for prototyping (vs. MC9S08QG4MDTE (TSSOP-8))
- On-chip BDC debug (vs. MC9S08QA2CPAE)
Designhinweise
Only 6 GPIOs are exposed in the 8-pin PDIP package; pin 1 (PTB5/RESET) and pin 5 (PTA5/IRQ/RESET) are shared with reset/interrupt functions. Plan the pin map during schematic capture, not after layout - reassigning PTA4 vs PTA0 vs PTA3 between ADC inputs and GPIO outputs is much harder once the PCB is fab'd.
Add a 100 nF decoupling capacitor as close as possible to VDD (pin 3) with a short ground return to VSS (pin 4). For designs with stop-mode entry/exit, place a bulk 1 uF to 10 uF capacitor on VDD to handle the small inrush during oscillator restart, otherwise you may see brown-out resets on wake.
Route the RESET line carefully if used in external-reset mode; keep it short and avoid running parallel to switching traces to prevent false resets. Through-hole PDIP simplifies prototype rework but is more susceptible to ESD on long, exposed leads - consider adding a TVS diode or series resistor on RESET for harsh environments.
The internal clock source (ICS with FLL) is accurate enough for UART up to ~57600 baud at room temperature, but at 115200 baud it may require an external crystal on PTA4/PTA3 (or PTA5/PTA4 depending on family variant). If your design needs reliable RS-485 or DMX512 communications, budget for an external 4 MHz to 8 MHz crystal rather than relying on the trimmed internal reference.
The 8-pin PDIP is a plastic through-hole package with low thermal resistance (~150 C/W junction-to-ambient for the bare package), but the part still has a maximum junction temperature of 150 C. At room temperature, power consumption is dominated by I/O sink/source current rather than core switching, so avoid sourcing more than the rated 10 mA per pin (25 mA total package) without thermal verification.
Compliance-Informationen
RoHS compliant per NXP product page (Pb-free 'E' suffix). Not AEC-Q100 qualified; choose S12/S32K family for automotive. REACH and conflict-mineral compliance inferred from NXP corporate statements.
