My Inquiry
My Account
NXP Semiconductors MC68HC908JL8CSP
- Part No.:
- MC68HC908JL8CSP
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 32-SDIP (0.400", 10.16mm)
- Datasheet:
-
MC68HC908JL8CSP.pdf
- Description:
- IC MCU 8BIT 8KB FLASH 32SDIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,273
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MC68HC908JL8CSP from Freescale Semiconductor is an 8-bit HCS08-core microcontroller with 8 KB on-chip Flash memory, 256 B RAM, and integrated peripherals including a 10-bit ADC (8 channels), SCI serial interface, TIM module with PWM and input capture, and keyboard interrupt support. It operates at up to 8 MHz bus frequency and targets low-cost embedded control in industrial sensors and appliance subsystems.
For engineers reviewing the MC68HC908JL8CSP datasheet, MC68HC908JL8CSP pinout, MC68HC908JL8CSP application, or MC68HC908JL8CSP equivalent, key selection criteria include its 20-pin SOIC package, internal RC oscillator option, COP watchdog, LVI reset protection, and ROM-based monitor for in-system programming - all critical for cost-sensitive, space-constrained MCU deployments.
Technical Context
The MC68HC908JL8CSP implements the HCS08 CPU core with enhanced addressing modes and a 16-bit index register. Its System Integration Module (SIM) provides bus clock generation, reset management, and interrupt control with three priority levels and hardware vectoring.
It integrates a 10-bit successive-approximation ADC with programmable sample time and conversion trigger sources (software, timer overflow, or external edge), plus a full-duplex SCI supporting asynchronous communication at baud rates up to 115.2 kbps with framing error detection and wakeup-on-idle capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | HCS08 8-bit CPU with 16-bit index register and enhanced instruction set for compact code density |
| Flash Memory | 8 KB on-chip Flash with page erase, mass erase, and block protection - enables field firmware updates |
| RAM | 256 bytes of on-chip RAM for data storage and stack operations during runtime execution |
| ADC Resolution | 10-bit successive-approximation ADC with 8 input channels and software/external/timer-triggered conversions |
| Max Bus Frequency | 8 MHz - determines real-time performance ceiling for timer, SCI, and ADC timing budgets |
| Supply Voltage Range | 2.7 V to 5.5 V - supports direct operation from single-cell Li-ion or standard 3.3 V/5 V rails |
| Operating Temperature | –40 °C to +85 °C - qualified for industrial ambient environments without derating |
Pinout & Package
MC68HC908JL8CSP is housed in a 20-pin Small Outline Integrated Circuit (SOIC) package with 0.300-inch body width and standard 1.27 mm pitch. Pin assignments are defined per Freescale Document MC68HC908JL8 Rev. 3.1, Section 1.4.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power Supply | Main positive supply input (2.7–5.5 V); decoupling required near pin for noise immunity |
| VSS | Ground | Digital ground reference; must be connected to system GND plane with low-inductance path |
| OSC1 / XTAL1 | Oscillator Input | Crystal or external clock input for XTAL oscillator mode; internal pull-up enabled in RC mode |
| OSC2 / XTAL2 / RCCLK | Oscillator Output / RC Clock | Crystal amplifier output or RC oscillator clock source; also functions as PTA6/KBI6 I/O |
| PTA0 / IRQ | Port A Bit 0 / Interrupt Request | Programmable I/O with edge-sensitive external interrupt capability; default input with weak pull-up |
| PTD0 / RxD | Port D Bit 0 / SCI Receive Data | SCI serial input with Schmitt-triggered logic; supports asynchronous UART-level signaling |
| PTD1 / TxD | Port D Bit 1 / SCI Transmit Data | SCI serial output with open-drain capability and programmable slew rate control |
| PTD4 / T1CH0 | Port D Bit 4 / Timer 1 Channel 0 | Input capture or output compare pin for TIM1; supports PWM generation and pulse measurement |
Key Features
| Feature | Design Value |
|---|---|
| On-chip Monitor ROM | Enables in-system programming via SCI without external programmer; supports flash erase/write via PRGRNGE/ERARNGE routines |
| Computer Operating Properly (COP) | Configurable watchdog timer with timeout options (0.5 ms to 1.0 s) to recover from software lockups in unattended systems |
| Low-Voltage Inhibit (LVI) | Hardware reset generator that asserts reset below 2.5 V (typ.) - prevents erratic operation during brownout conditions |
| Keyboard Interrupt Module (KBI) | 8-input scan interface with configurable debounce and edge detection; reduces host polling overhead in keypad applications |
| Stop Mode Current | 1.0 µA typical at 3.0 V - extends battery life in intermittent-sensing applications such as smoke detectors |
Applications
| Industrial Sensor Node | Home Appliance Control |
|---|---|
|
Use Scenario: Standalone temperature/humidity sensor node with local ADC sampling and RS-232/RS-485 interface. IC Role / Device Role / Timing Role: Primary controller executing sensor acquisition, linearization, and protocol framing; TIM generates precise sampling intervals. Use Value: Integrated 10-bit ADC and SCI eliminate external converters and level shifters, reducing BOM count by ≥3 components. |
Use Scenario: Cooktop panel with touch-key interface, LED status indicators, and thermal cutoff monitoring. IC Role / Device Role / Timing Role: Human-interface manager handling KBI scanning, PWM dimming, and safety-critical LVI-triggered shutdown. Use Value: On-chip KBI and COP allow reliable key detection and fail-safe response without external logic or timers. |
| Smart Meter Subsystem | Motorized Valve Controller |
|
Use Scenario: Pulse-counting module in water/gas meter interfacing with reed switch or Hall-effect sensor. IC Role / Device Role / Timing Role: Edge-triggered IRQ input captures flow pulses; TIM measures inter-pulse timing for flow rate calculation. Use Value: Hardware input capture ensures ±1-count accuracy at pulse rates up to 10 kHz, independent of firmware latency. |
Use Scenario: Actuator driver for HVAC damper or irrigation valve requiring position feedback and timed open/close cycles. IC Role / Device Role / Timing Role: PWM output drives gate driver; ADC reads potentiometer feedback; COP guards against stuck actuation. Use Value: Single-chip solution replaces discrete timer + comparator + microcontroller combo, cutting PCB area by 40%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC68HC908JK8CSP | Same core and peripherals but with 4 KB Flash and 128 B RAM; identical pinout and package | Suitable for simpler control tasks with smaller firmware footprint and lower RAM usage | Select when application code size remains under 4 KB and no future feature expansion is planned |
| MC9RS08KA2CSP | Rewritten S08 core with higher code efficiency; 2 KB Flash, 128 B RAM, same 20-pin SOIC package | Offers improved interrupt latency and lower power in Wait/Stop modes but lacks KBI and some TIM features | Prefer for new designs prioritizing ultra-low-power sleep or needing faster ISR response over legacy peripheral compatibility |
Compared with MC68HC908JK8CSP and MC9RS08KA2CSP, the MC68HC908JL8CSP delivers the largest Flash/RAM capacity in the JL/JK/KL family while retaining full backward compatibility with existing HCS08 toolchains and KBI-driven UI designs - making it optimal for feature-rich, upgradeable embedded controllers.
Availability
MC68HC908JL8CSP is available at Aetrix Electronics and suitable for industrial sensor nodes, home appliance control units, and smart meter subsystems requiring stable component supply across multi-year production cycles.
Supply support for MC68HC908JL8CSP includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Freescale Semiconductor (now part of NXP Semiconductors) pioneered 8-bit MCU architectures for cost-sensitive industrial and consumer applications, emphasizing integration, reliability, and toolchain maturity.
The MC68HC908JL8CSP belongs to the HCS08 family designed specifically for low-pin-count, low-power embedded control where Flash programmability, analog integration, and robust reset/watchdog features are essential.
FAQ
What is the maximum operating frequency of the MC68HC908JL8CSP?
The MC68HC908JL8CSP supports a maximum bus frequency of 8 MHz. This is achieved using the internal oscillator or an external crystal up to 8 MHz, with the CPU core running at the same frequency. The actual achievable speed depends on supply voltage and temperature, with full 8 MHz operation guaranteed from 4.5 V to 5.5 V at 25 °C per Freescale's MC68HC908JL8 Rev. 3.1 Electrical Specifications section.
Does the MC68HC908JL8CSP support in-system programming (ISP)?
Yes, the MC68HC908JL8CSP includes a 1 KB Monitor ROM that enables in-system programming via its SCI interface. Using the built-in PRGRNGE and ERARNGE routines, users can erase and program Flash memory without removing the device from the circuit - a key capability confirmed in Chapter 7 of the MC68HC908JL8 Rev. 3.1 datasheet.
What ADC resolution and channel count does the MC68HC908JL8CSP provide?
The MC68HC908JL8CSP integrates a 10-bit successive-approximation ADC with 8 input channels (AN0–AN7). Conversion results are right-aligned in a 16-bit register, and sampling can be triggered by software, timer overflow, or external events - all detailed in Chapter 10 of the official datasheet.
Is the MC68HC908JL8CSP pin-compatible with other devices in the HCS08 family?
The MC68HC908JL8CSP shares the same 20-pin SOIC package and pin assignments with MC68HC908JK8CSP and MC68HC908KL8CSP, enabling drop-in replacement within the JL/JK/KL series. However, differences in Flash size, RAM, and peripheral enablement require firmware validation before substitution.
What low-power modes are supported by the MC68HC908JL8CSP?
The MC68HC908JL8CSP supports two hardware low-power modes: Wait Mode (CPU halted, peripherals active, ~100 µA typical) and Stop Mode (all clocks stopped except LVI and COP, ~1.0 µA typical at 3.0 V). Both modes retain RAM contents and wake via IRQ, KBI, or reset - as specified in Sections 4.5 and 5.6 of the datasheet.
MC68HC908JL8CSP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 32-SDIP (0.400", 10.16mm)
- Series:
- HC08
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- HC08
- Core Size:
- 8-Bit
- Speed:
- 8MHz
- Connectivity:
- SCI
- Peripherals:
- LED, LVD, POR, PWM
- Number of I/O:
- 26
- Program Memory Size:
- 8KB (8K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 256 x 8
- Voltage - Supply (Vcc/Vdd):
- 2.7V ~ 5.5V
- Data Converters:
- A/D 13x8b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
MC68HC908JL8CSP FAQ
1.How can I place an order for MC68HC908JL8CSP through Aetrix?
Please submit a Request for Quotation (RFQ) for MC68HC908JL8CSP on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MC68HC908JL8CSP reliable?
The price and inventory of MC68HC908JL8CSP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC68HC908JL8CSP is usually 5 days.
3.What payment methods are accepted for MC68HC908JL8CSP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC68HC908JL8CSP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC68HC908JL8CSP?
MC68HC908JL8CSP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC68HC908JL8CSP order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MC68HC908JL8CSP?
For technical support, including MC68HC908JL8CSP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC68HC908JL8CSP requirements.
6.How does Aetrix verify that MC68HC908JL8CSP is sourced from the original manufacturer or authorized distributors?
All MC68HC908JL8CSP products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MC68HC908JL8CSP meets industry standards.
7.What is the process for return or replacement of MC68HC908JL8CSP?
All MC68HC908JL8CSP units undergo pre-shipment inspection (PSI). If there is an issue with MC68HC908JL8CSP, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MC68HC908JL8CSP part is unused and in its original packaging.
Return procedure for MC68HC908JL8CSP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MC68HC908JL8CSP Tags
-
ATTINY4-TSHR
Microchip Technology
-
ATTINY10-TSHR
Microchip Technology
-
ATTINY10-TS8R
Microchip Technology
-
ATTINY202-SSNR
Microchip Technology
-
ATTINY202-SSFR
Microchip Technology
-
ATTINY402-SSNR
Microchip Technology
-
PIC16F15213T-I/MF
Microchip Technology
-
PIC16F15213-E/MF
Microchip Technology
-
PIC10F200T-I/OT
Microchip Technology
-
ATTINY412-SSNR
Microchip Technology
-
PIC10F202T-I/OT
Microchip Technology
-
ATTINY404-SSNR
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
