NXP Semiconductors MC68HC908LV8CPBE

Overview

MC68HC908LV8CPBE from NXP (formerly Freescale) is an 8-bit HCS08 microcontroller with 8 KB on-chip Flash, 512 B RAM, integrated LCD driver (up to 4×24 segments), 10-bit ADC (8 channels), and programmable periodic interrupt (PPI). It operates from 2.7–5.5 V and supports low-power Wait/Stop modes - designed for battery-powered instrumentation and portable LCD-based control panels.

For engineers reviewing the MC68HC908LV8CPBE datasheet, MC68HC908LV8CPBE pinout, MC68HC908LV8CPBE application, or MC68HC908LV8CPBE equivalent, key selection criteria include its integrated LCD segment drive capability, single-supply operation down to 2.7 V, Flash endurance (100k erase/write cycles), COP watchdog, and PPI timer for precise wake-up intervals in energy-constrained systems.

Technical Context

The MC68HC908LV8CPBE implements the HCS08 CPU core with 16-bit address space, supporting indexed, extended, and relative addressing. Its Clock Generator Module (CGM) includes a crystal oscillator input (OSC1/OSC2), PLL circuit for internal clock multiplication, and selectable base clock sources including internal RC and external crystal.

System integration includes a System Integration Module (SIM) managing reset sources (POR, LVI, COP, illegal opcode), exception handling, and low-power mode entry/exit sequencing. The LCD driver supports static, 2-, 3-, and 4-mux configurations with programmable contrast control and fast-charge circuitry for stable segment biasing.

Key Specifications

Pinout & Package

MC68HC908LV8CPBE is housed in a 64-pin QFP (Quad Flat Package) with 0.5 mm pitch, measuring 10 mm × 10 mm. The package supports fine-pitch PCB assembly and provides full I/O access for LCD, ADC, TIM, and serial interfaces.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with MC9RS08KA8CPBE and MC9S08LG32CPBE, the MC68HC908LV8CPBE uniquely combines Flash-based programmability, ultra-low-voltage operation, and hardware LCD segment driving - making it the only option among the three that eliminates external display bias circuitry while maintaining full functionality at 2.7 V.

Availability

MC68HC908LV8CPBE is available at Aetrix Electronics and suitable for portable medical devices, industrial panel meters, smart thermostats, and appliance control panels requiring stable component supply and long-term production continuity.

Supply support for MC68HC908LV8CPBE 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

NXP Semiconductors is a global semiconductor leader focused on secure connectivity solutions for automotive, industrial, and IoT applications.

The MC68HC908LV8CPBE belongs to the legacy HCS08 microcontroller family, engineered specifically for cost-sensitive, low-power embedded systems requiring integrated analog peripherals and human-interface elements like LCDs.

FAQ

What is the maximum operating frequency of the MC68HC908LV8CPBE?

The MC68HC908LV8CPBE supports a maximum bus frequency of 8 MHz, derived from its internal CGM with PLL multiplication. This frequency is achievable when using an external 4 MHz crystal with 2× PLL multiplier, or internal RC oscillator trimmed to 8 MHz. The actual system performance depends on VDD level and temperature, with guaranteed operation across the full –40°C to +85°C range at 8 MHz only above 4.5 V.

Does the MC68HC908LV8CPBE support in-circuit programming?

Yes, the MC68HC908LV8CPBE supports in-circuit programming via the Background Debug Mode (BDM) interface using a standard BDM pod. Flash memory can be reprogrammed without removing the device from the target board, enabling field firmware updates and development iteration. Programming requires the VDD, BKGD, and RESET pins, with no need for high-voltage VPP.

How many LCD segments can the MC68HC908LV8CPBE drive?

The MC68HC908LV8CPBE drives up to 96 segments (4 backplanes × 24 frontplanes) in 4-mux configuration. Segment mapping is fixed per pin assignment: BP0–BP3 are dedicated backplane outputs, while FP0–FP24 are assigned across Port A and Port B pins. Static (1-mux) and 2-/3-mux modes are also supported, adjusting segment count accordingly.

What is the resolution and accuracy of the ADC in the MC68HC908LV8CPBE?

The MC68HC908LV8CPBE features a 10-bit successive-approximation ADC with 8 single-ended input channels. Typical integral nonlinearity (INL) is ±1 LSB and differential nonlinearity (DNL) is ±1 LSB over the full temperature range. Accuracy depends on reference stability - using internal 2.5 V reference yields ±10 mV absolute error; external VREFH/VREFL improves precision to ±2 mV with proper decoupling.

Is the MC68HC908LV8CPBE RoHS compliant?

Yes, the MC68HC908LV8CPBE is RoHS compliant and meets EU Directive 2011/65/EU requirements. The "PBE" suffix in the part number denotes lead-free (Pb-free) packaging and halogen-free molding compound. Full compliance documentation, including material declarations and test reports, is available through NXP's official product page and authorized distributors.