MC9S08QE64CLC - 8-Bit 64KB Flash 50MHz MCU | NXP
MPN: MC9S08QE64CLC ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.1211 | $6.12 |
| 10 | $6.1211 | $61.21 |
| 100 | $6.1211 | $612.11 |
| 500 | $6.1211 | $3,060.55 |
| 1,000 | $6.1211 | $6,121.10 |
MC9S08QE64CLC Overview
A microcontroller is a programmable system-on-chip that executes firmware, coordinates digital inputs and outputs, and integrates memory and peripherals into one compact device. The S08 MCU belongs to the broader 8-bit microcontroller hierarchy, where an enhanced HCS08 CISC core provides a straightforward architecture for cost-sensitive control systems. Its integrated flash stores application code, while RAM supports working data and the stack.
Verified features include 64 KB of internal flash, 4 KB of internal RAM, 26 general-purpose I/O pins, a 10-channel 12-bit A/D converter, and an integrated LCD driver. These resources support mixed digital and analog products without requiring a separate ADC in designs that operate within the device's documented electrical limits. The S08 family description also identifies flexible clock options, although exact clock-tree limits were not supplied in the verified data.
The MC9S08QE64CLC is positioned for automotive and consumer applications where compact integration, 8-bit control, and LCD support are useful. Potential uses include instrument-cluster sub-systems, small motor controllers, appliance interfaces, meter electronics, and low-cost embedded control panels. The 32-LQFP package exposes more I/O than a small leadless package and remains easy to assemble and inspect at prototype and repair stages.
Designers should resolve the 20 MHz versus 50 MHz listing discrepancy before setting the final clock configuration. They should also confirm the exact pin functions, memory map, electrical limits, temperature grade, and package drawing from the official datasheet. Because the NXP product page labels the device End of Life, new production should be conditioned on lifecycle, availability, and last-time-buy review rather than treated as an unrestricted active part.
This data page combines verified distributor specifications, lifecycle information, sourcing context, and engineering cautions. It distinguishes confirmed values from unavailable electrical details and does not infer missing pin assignments, timing margins, temperature limits, or certification claims. That distinction is especially important for a discontinued MCU, where hardware reuse must be validated at both software and schematic levels.
Drop-in alternatives for MC9S08QE64CLC — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with MC9S08QE64CLC (same form factor and footprint) — differing in Package, ADC, LCD Driver, Maximum CPU Frequency, Supply Voltage.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MC9S08QE32CLCR
✅ Drop-In✓ In Stock
$2.2 / Unit
View Datasheet →MC9S08QE64CLD
✅ Drop-In📋 Reference alternative (not in catalog)
MC9S08QE64CLH
✅ Drop-In✓ In Stock
$9.25 / Unit
View Datasheet →MC9S08DN32CLC
✅ Drop-In✓ In Stock
$4.25 / Unit
View Datasheet →MC9S08GW64CLK
✅ Drop-In✓ In Stock
$3.21 / Unit
View Datasheet →MC9S08QE64CLC Maximum Ratings & Electrical Characteristics
| Product Type | 8-bit microcontroller |
| Series | S08QE |
| CPU Core | Enhanced HCS08 CISC core |
| Maximum Frequency | 50 MHz |
| NXP Product-Page Operation Statement | Up to 20 MHz |
| Flash Memory | 64 KB internal flash |
| RAM Memory | 4 KB internal RAM |
| General-Purpose I/O | 26 pins |
| A/D Converter | 10-channel, 12-bit |
| LCD Driver | Integrated LCD driver |
| Architecture | CISC |
| Package | 32-pin LQFP, 7 x 7 mm |
| Mounting Type | Surface mount |
| Supply Voltage | 2.5 V to 3.3 V |
| Temperature Grade | Industrial |
| Debug Support | Background debugging system with breakpoint capability |
MC9S08QE64CLC 32-pin lqfp, 7 x 7 mm Pin Configuration Guide
Pin configuration for MC9S08QE64CLC (32-pin lqfp, 7 x 7 mm package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for MC9S08QE64CLC.
Refer to the datasheet for full pin configuration.
Typical Applications
MC9S08QE64CLC is suitable for 6 applications: Automotive Control Modules, Instrument and Meter Electronics, Small Motor and Actuator Control, Consumer Appliance Interfaces, Industrial Sensor Conditioning, Cost-Sensitive Embedded Control.
Automotive Control Modules
The MC9S08QE64CLC fits cost-sensitive automotive control modules where 64 KB of flash provides more code headroom than a 32 KB S08QE option. Its 26 general-purpose I/O pins can support switches, indicators, and discrete actuators, while the 10-channel, 12-bit A/D converter can supervise mixed analog signals. The device must be qualified against the exact electrical and automotive-quality requirements before release; the supplied data does not confirm AEC-Q100 status. Firmware timing also requires reconciliation of the cataloged 50 MHz maximum with NXP's up-to-20-MHz product-page statement.
Recommended
Instrument and Meter Electronics
The integrated LCD driver and 10-channel, 12-bit A/D converter make the MC9S08QE64CLC relevant to meters, instrument clusters, and compact display controllers. Sixteen or more I/O lines can be allocated among display segments, keys, indicators, and communication interfaces without requiring a separate display driver. The 64 KB flash capacity allows display formatting, calibration, diagnostics, and interface logic to coexist. Engineers should budget I/O after reserving MCU supply, ground, reset, clock, programming, and debug functions, then verify LCD segment mapping in the package pinout.
Recommended
Small Motor and Actuator Control
The MC9S08QE64CLC can serve as the supervisory controller in small motor, solenoid, valve, or actuator modules because it combines 64 KB of program memory, 26 GPIO pins, and a 12-bit ADC in one 32-LQFP device. Firmware can read position or current feedback, apply debouncing and fault logic, and coordinate external driver circuitry. The MCU does not directly replace a power MOSFET or motor driver, so switching devices, protection networks, flyback paths, and current ratings must be designed separately around the measured load.
Recommended
Consumer Appliance Interfaces
For appliances and compact consumer products, the MC9S08QE64CLC provides enough flash for a user interface, state machine, diagnostics, and communication routines while consuming only one 32-LQFP device. Its ADC channels support analog controls or sensing, and its LCD driver is useful in products with simple segment displays. The verified 2.5 V to 3.3 V supply description supports low-voltage designs, although exact I/O limits, analog accuracy, clock configuration, and timing margins remain datasheet-dependent and must be reviewed before schematic approval.
Recommended
Industrial Sensor Conditioning
The 10-channel, 12-bit A/D converter makes MC9S08QE64CLC suitable as a controller for low-speed industrial sensing, threshold detection, and diagnostic logging rather than high-speed signal processing. Firmware can digitize several sensor channels, apply filtering, compare limits, and update a display or external communications link. Analog front-end design still requires careful reference, grounding, filtering, input-range, and acquisition-time analysis because those electrical parameters were not included in the supplied verified excerpts.
Recommended
Cost-Sensitive Embedded Control
The MC9S08QE64CLC is appropriate for compact embedded controllers whose requirements fit an 8-bit CISC architecture and 64 KB flash budget. Its S08 platform can consolidate several discrete functions into one device, reducing board area while retaining LCD and analog-conversion resources. For new development, lifecycle risk is the principal concern: NXP lists the MCU as End of Life, so production teams should freeze a tested last-time-buy strategy or redesign to a supported MCU while preserving only those interfaces that can be validated as electrically and software compatible.
Recommended
Recommended Products Summary
Engineering reference data for MC9S08QE64CLC — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MC9S08QE32CLCR | MC9S08QE64CLD | MC9S08QE64CLH | MC9S08DN32CLC | MC9S08GW64CLK |
|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
Key Differentiators
- Twice the program memory of the lower-capacity S08QE option (vs MC9S08QE32CLCR)
- Integrated mixed-signal and display resources (vs MC9S08QE64CLD)
- Compact 7 x 7 mm surface-mount integration (vs MC9S08DN32CLC)
Design Notes
Resolve the verified-source discrepancy between the distributor-listed 50 MHz maximum and the NXP search statement of up to 20 MHz before assigning bus, timer, or communications timing. Configure clocks conservatively until the official datasheet confirms each mode. Also validate the verified 2.5 V to 3.3 V supply description against core, I/O, and analog operating ranges; do not infer that every peripheral has the same limits.
Design the 32-LQFP footprint from the official NXP package drawing rather than a generic 32-pin square LQFP footprint. Verify pin-1 orientation, lead pitch, solder-mask clearance, and courtyard against the exact ordering code. Because this is an End-of-Life MCU, preserve the footprint and pin labels in the schematic and assembly documentation so a qualified supported replacement can be assessed without treating package-name similarity as proof of pin compatibility.
Do not substitute MC9S08QE32CLCR solely because it is in the S08QE family. Its verified 32 KB flash capacity is half the target's 64 KB and may overflow code, bootloader, lookup tables, or calibration storage. Even if the binary fits, assess reset vectors, timers, interrupts, ADC sequencing, LCD mapping, and peripheral registers before treating firmware compatibility as established.
Place decoupling structures at the supply pins using the capacitance and placement required by the official datasheet; those values were not supplied in the verified excerpts. Keep analog and LCD routes away from noisy switching nodes, preserve a quiet ground return for the ADC, and use the LCD-driver routing guidance from the manufacturer documentation. These steps are especially important when the MCU controls relays, motor drivers, or multiplexed display nodes on the same compact board.
Compliance Information
The verified excerpts identify automotive and consumer positioning but do not explicitly state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. No compliance claim is assumed.
