MC908JL16CSPE - 8-bit HC08 MCU, 16KB Flash, 32-SDIP | NXP
MPN: MC908JL16CSPE ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $9.95 | $9.95 |
| 10 | $9.1 | $91.00 |
| 100 | $8.2 | $820.00 |
| 500 | $7.45 | $3,725.00 |
| 1,000 | $6.95 | $6,950.00 |
MC908JL16CSPE Overview
What is an 8-bit microcontroller? An 8-bit microcontroller unit (MCU) is a small self-contained computer-on-a-chip that combines an 8-bit CPU, program memory (ROM/Flash), data memory (RAM), and peripheral interfaces (timers, ADC, I/O, communication ports) on a single die. In the broader hierarchy, this places the MC908JL16CSPE as: microcontroller -> 8-bit MCU -> M68HC08 family -> Freescale/NXP low-cost Flash MCU class -> embedded controller. 8-bit MCUs remain dominant in cost-sensitive and timing-deterministic applications such as motor control, white goods, and sensor interfacing.
Key features of the MC908JL16CSPE include 16KB of in-application re-programmable Flash with security features, an internal oscillator that eliminates the need for an external crystal in many designs, low-power stop and wait modes for battery-friendly operation, a fully static CMOS design, and an enhanced serial communications interface (SCI) plus a serial peripheral interface (SPI). The device is fully upward object-code compatible with the M6805, M146805, and M68HC05 families.
The HC08 CPU uses a 16-bit stack pointer and a 16-bit index register (H:X) to provide fast context switching and C-friendly addressing. The integrated 12-channel 8-bit ADC has a conversion time under 17 µs and is suitable for monitoring sensors such as thermistors, potentiometers, and battery voltage. Two 16-bit timer modules each support input capture, output compare, and PWM generation up to 8-bit resolution, making the MCU suitable for simple closed-loop control loops.
Typical applications include appliance control boards (washing machines, microwave ovens, HVAC control panels), battery chargers, remote controls, industrial sensor interfaces, low-end motor drives, and educational/evaluation boards. Designers choose the JL16 for its combination of Flash re-programmability (simplifying firmware revisions), small package, and low unit cost in production volumes of 10K and above.
When designing with the MC908JL16CSPE, ensure that the reset pin is properly decoupled with a 1 µF capacitor and that the IRQ pin is either pulled high or driven by the system controller. The internal oscillator accuracy is sufficient for asynchronous serial communications up to 9600 baud but is not suitable for CAN, USB, or higher-speed UART links without external oscillator options.
This page synthesizes distributor pricing, drop-in 32-SDIP compatible alternatives, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for MC908JL16CSPE — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MC68HC908JL16CPE
✅ Drop-In📋 Reference alternative (not in catalog)
MC68HC908JK8CPE
✅ Drop-In📋 Reference alternative (not in catalog)
MC68HC908JK1CPE
✅ Drop-In📋 Reference alternative (not in catalog)
MC68HC908GP32CPE
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
MC68HC08JK1CP
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
MC908JL16CSPE Maximum Ratings & Electrical Characteristics
| Core | M68HC08 (HC08) |
| Data Bus Width | 8 bit |
| Maximum Internal Bus Frequency | 8 MHz |
| Program Memory Size | 16 KB (16K x 8) Flash |
| RAM Size | 512 B (512 x 8) |
| Number of I/O Pins | 26 |
| ADC | 12-channel, 8-bit |
| Timers | 2 x 16-bit (TIM1, TIM2) |
| Communication Interfaces | SCI (UART), SPI |
| Oscillator Type | Internal |
| Supply Voltage | 2.7 V to 5.5 V |
| Operating Temperature | -40 C to +85 C (industrial) |
| Package | 32-SDIP (0.400 inch, 10.16 mm) |
| Mounting Type | Through-Hole |
| Packaging | Tube |
| Object-Code Compatibility | M6805, M146805, M68HC05 Families |
| Low-Power Modes | Stop and Wait |
MC908JL16CSPE Pin Configuration
| Pin 1 | IRQ — External interrupt request (active low) |
| Pin 2 | RST — Reset input (active low) |
| Pin 3 | PTA0 — Port A bit 0 / TCLK |
| Pin 4 | PTA1 — Port A bit 1 / ECHO |
| Pin 5 | PTA2 — Port A bit 2 |
| Pin 6 | PTA3 — Port A bit 3 |
| Pin 7 | VDD — Power supply (2.7 V to 5.5 V) |
| Pin 8 | VSS — Ground |
| Pin 9 | PTA4 — Port A bit 4 / TCLK2 |
| Pin 10 | PTA5 — Port A bit 5 |
| Pin 11 | PTA6 — Port A bit 6 |
| Pin 12 | PTA7 — Port A bit 7 |
| Pin 13 | PTB0 — Port B bit 0 / ADC0 |
| Pin 14 | PTB1 — Port B bit 1 / ADC1 |
| Pin 15 | PTB2 — Port B bit 2 / ADC2 |
| Pin 16 | PTB3 — Port B bit 3 / ADC3 |
| Pin 17 | PTB4 — Port B bit 4 / ADC4 |
| Pin 18 | PTB5 — Port B bit 5 / ADC5 |
| Pin 19 | PTB6 — Port B bit 6 / ADC6 |
| Pin 20 | PTB7 — Port B bit 7 / ADC7 |
| Pin 21 | PTC0 — Port C bit 0 / ADC8 |
| Pin 22 | PTC1 — Port C bit 1 / ADC9 |
| Pin 23 | PTC2 — Port C bit 2 / ADC10 |
| Pin 24 | PTC3 — Port C bit 3 / ADC11 |
| Pin 25 | PTC4 — Port C bit 4 / SS |
| Pin 26 | PTC5 — Port C bit 5 / MOSI |
| Pin 27 | PTC6 — Port C bit 6 / MISO |
| Pin 28 | PTC7 — Port C bit 7 / SPSCK |
| Pin 29 | PTD0 — Port D bit 0 / TxD |
| Pin 30 | PTD1 — Port D bit 1 / RxD |
| Pin 31 | OSC1 — Oscillator input |
| Pin 32 | OSC2 — Oscillator output |
Typical Applications
MC908JL16CSPE is suitable for 6 applications: White Goods and Appliance Control, Battery Charger and Power Management Controllers, Industrial Sensor and Instrumentation Interfaces, Remote Control and Consumer Handheld Devices, HVAC Fan and Pump Motor Control, Educational MCU Trainer and Evaluation Boards.
White Goods and Appliance Control
Use this MPN
Recommended
Battery Charger and Power Management Controllers
The MC908JL16CSPE's 12-bit accurate internal oscillator and 12-channel ADC make it suitable as a supervisory MCU in 6-12 cell NiMH and Li-ion charging boards. With 16 KB Flash, designers can implement CC/CV charging curves, cell-balancing routines, and safety timers without external memory. The 8 MHz bus frequency is sufficient for low-speed PWM generation at 15 kHz switching, well below audible noise. Use the 16-bit timer PWM channels to drive a high-side n-MOSFET pair and the ADC to monitor cell voltage via a precision resistor divider.
Recommended
Industrial Sensor and Instrumentation Interfaces
The MC908JL16CSPE integrates a 12-channel 8-bit ADC with sub-17 µs conversion time, ideal for multi-sensor monitoring in industrial process control and building automation panels. With 26 I/O pins, designers can interface the MCU directly to 4-20 mA loop front-ends, thermocouple amplifier outputs, and digital flow-meter pulse trains. The 16 KB Flash program space supports MODBUS RTU protocol stacks and local diagnostic logging. Operate at industrial -40 to +85 C ambient to satisfy DIN-rail mounted control cabinet requirements.
Recommended
Remote Control and Consumer Handheld Devices
The MC908JL16CSPE's low-power stop and wait modes (sub-µA quiescent current) suit it to battery-powered remote-control designs including TV/STB remote handsets, garage-door openers, and RF keyfobs. The integrated 8 MHz CPU keeps the part responsive to button events, while 16 KB Flash is enough to encode multi-protocol IR transmission tables (RC5, NEC, SIRC) and address-binding logic. A 32-SDIP form factor is friendly for through-hole hobbyist prototype boards using hand-soldered construction.
Recommended
HVAC Fan and Pump Motor Control
The MC908JL16CSPE's two 16-bit timers generate hardware PWM up to 8-bit resolution, ideal for single-phase brushless DC fan drives and small induction-pump speed controllers. The MCU's 8 MHz CPU runs the algorithm loop within tens of microseconds, leaving headroom for a soft-start ramp and overcurrent trip logic. The 26 digital I/Os let the MCU read tachometer feedback, multiple push-button inputs, and drive a 7-segment LED display via external shift registers. Industrial temperature grade supports residential attic and boiler-room environments.
Recommended
Educational MCU Trainer and Evaluation Boards
The MC908JL16CSPE is widely used in 8-bit microcontroller textbooks and university labs for HC08 assembly programming instruction. Its generous 32-SDIP package yields a comfortable 0.100 inch row pitch that is breadboard-friendly, and the HC08 ISA is the canonical example for studying accumulator-plus-index addressing modes. 16 KB Flash allows full semester projects (audio player, line-following robot, alarm system) without external memory expansion. The P&E Micro MON08 BDM interface provides single-step debug and watch-point registers for laboratory teaching.
Recommended
Recommended Products Summary
Engineering reference data for MC908JL16CSPE — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MC68HC908JL16CPE | MC68HC908JK8CPE | MC68HC908JK1CPE |
|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 32-SDIP (0.400 inch) | 32-SDIP (0.400 inch) - same | 32-SDIP (0.400 inch) - same | 32-SDIP (0.400 inch) - same |
| Core | HC08 8-bit | HC08 8-bit | HC08 8-bit | HC08 8-bit |
| Program Flash | 16 KB | 16 KB | 8 KB (-50%) | 1.5 KB (-91%) |
| RAM | 512 B | 512 B | 1 KB (+100%) | 128 B (-75%) |
| Max Bus Frequency | 8 MHz | 8 MHz | 8 MHz | 8 MHz |
| I/O Pins | 26 | 26 | 15 (-42%) | 13 (-50%) |
| ADC Channels | 12 ch / 8-bit | 12 ch / 8-bit | 12 ch / 8-bit | 12 ch / 8-bit |
| Timers | 2 x 16-bit | 2 x 16-bit | 2 x 16-bit | 2 x 16-bit |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
| Lifecycle Status | NRND | NRND | Obsolete | Obsolete |
Key Differentiators
- Largest Flash in JL family SDIP-32 footprint (vs MC68HC908JK8CPE)
- Industry-standard 32-SDIP through-hole form factor (vs MC908JL16CFAE (LQFP))
- Mature HC08 ISA with full M68HC05 object-code compatibility (vs PIC16F877A)
Design Notes
Estimated: at Vdd=5 V and 8 MHz active current approx 9 mA, the MC908JL16CSPE dissipates about 45 mW. Add a 4.7 µF bulk + 0.1 µF ceramic decoupling pair on each Vdd/Vss pin pair to suppress switching noise from internal core transients. In STOP mode the MCU draws under 10 µA; power may be removed from analog peripherals to extend battery life.
Place the 0.1 µF Vdd bypass cap within 50 mil of pins 7-8 and route a single-point ground via to a copper pour. Keep the OSC1/OSC2 traces short and symmetric to reduce stray capacitance; avoid routing high-speed digital traces parallel to the OSC pair. For the SDIP package, keep vias outside the 0.600 inch lead span to ease hand-soldering rework.
The RST pin must be held low during power ramp until Vdd reaches 2.7 V; failure to do so may leave the Flash controller in an indeterminate state. Do not enable the internal oscillator AND connect a crystal simultaneously - select exactly one clock source in the CONFIG register. Stop and Wait modes require interrupts to be cleared before WAI, otherwise the part will not wake.
Compliance Information
The MC908JL16CSPE was originally released with Pb-bearing SDIP package. NXP/Freescale offers Pb-free variants by specific order code suffix (e.g., -ND). Confirm RoHS/REACH status with the manufacturer or with your distributor's shipping carton label. Part is not AEC-Q100 qualified; for automotive use select an AEC-Q100 S08 or Kinetis E-series equivalent.
