NXP Semiconductors MC9S08PL32CQH

Overview

MC9S08PL32CQH from NXP Semiconductors is an 8-bit S08 core microcontroller with 32 KB flash, 4 KB RAM, and 256-byte EEPROM, operating up to 20 MHz across –40 °C to +85 °C. It integrates a 16-channel 10-bit ADC, three FlexTimer modules (6+2+2 channels), three LIN-capable SCI UARTs, I²C, RTC, CRC, analog comparator, and keyboard interrupt modules - deployed in industrial motor control and automotive body electronics.

For engineers reviewing the MC9S08PL32CQH datasheet, MC9S08PL32CQH pinout, MC9S08PL32CQH application, or MC9S08PL32CQH equivalent, this page delivers verified electrical specs, package mapping to 64-pin QFP, validated peripheral timing, low-power stop3 mode current (1.45 µA @ 5 V), and confirmed alternative part selection guidance for migration or sourcing continuity.

Technical Context

The MC9S08PL32CQH implements an enhanced HCS08 CPU core with four-level nested interrupt support and up to 40 interrupt/reset sources. Its clock system combines an external crystal oscillator (31.25 kHz–20 MHz) and an internal frequency-locked-loop (FLL) with factory-trimmed reference enabling ±2% accuracy over –40 °C to +85 °C.

System protection includes independent watchdog timer, selectable low-voltage detect (LVD) with four warning thresholds, illegal opcode/address detection, and flash/RAM access protection. Peripheral clock gating via PMC allows selective module disablement to reduce active current in wait and stop3 modes.

Key Specifications

Pinout & Package

MC9S08PL32CQH is housed in a 64-pin Quad Flat Package (QFP) with 0.5 mm pitch and exposed thermal pad. Pin assignments follow the MC9S08PL60/PL32 family layout; all 57 GPIOs-including two true open-drain outputs (PTA2, PTA3)-are multiplexed with peripherals per signal function.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 8-bit microcontroller applications.

Compared with MC9S08PL32CQH, S9KEAZN32ACLH offers modern ARM architecture but requires board revision, while MC9S08AC60CLD retains S08 compatibility and increases flash capacity at the expense of RTC and GPIO count - making it suitable only for non-RTC applications with tighter I/O requirements.

Availability

MC9S08PL32CQH is available at Aetrix Electronics and suitable for industrial motor control, automotive body electronics, and smart sensor node applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for MC9S08PL32CQH 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 delivering secure, scalable solutions for automotive, industrial, IoT, and communication infrastructure markets.

The MC9S08PL32CQH belongs to the S08PL family - engineered for cost-sensitive, low-power embedded control in harsh environments, emphasizing robust peripheral integration, flash endurance, and extended temperature operation.

FAQ

What is the maximum operating frequency and voltage range for the MC9S08PL32CQH?

The MC9S08PL32CQH operates at up to 20 MHz bus frequency across a supply voltage range of 2.7 V to 5.5 V, fully specified over the industrial temperature range of –40 °C to +85 °C. This rating applies to all core and peripheral functions including ADC, FTM, and SCI modules as confirmed in the MC9S08PL60 Series Data Sheet Rev. 4.

Does the MC9S08PL32CQH support in-circuit debugging, and what interface is used?

Yes, the MC9S08PL32CQH supports single-wire background debug (BDM) via the PTA4/BKGD pin. It provides full in-circuit emulation with three hardware breakpoints and on-chip ICE debug logic, enabling real-time code execution control and memory inspection without requiring dedicated debug pins beyond BKGD.

What low-power modes does the MC9S08PL32CQH offer, and what is the lowest current draw?

The MC9S08PL32CQH supports multiple low-power states including Wait and Stop3 modes. In Stop3 mode with only the 1 kHz LPO active, it draws 1.45 µA at 5 V and 1.4 µA at 3 V over –40 °C to +85 °C - verified in Table 5 of the datasheet. Peripheral clocks can be selectively disabled via the PMC register to further reduce active current.

How many ADC channels and what resolution does the MC9S08PL32CQH provide?

The MC9S08PL32CQH integrates a 16-channel, 10-bit successive-approximation ADC with 2.5 µs conversion time, internal bandgap reference, optional hardware trigger, and operation capability in Stop3 mode. Channel count and resolution are identical to the MC9S08PL60 variant per Table 1 in the datasheet.

Is the MC9S08PL32CQH pin-compatible with other members of the S08PL family?

The MC9S08PL32CQH shares the same 64-pin QFP package and pin assignment as the MC9S08PL60CQH, including identical GPIO count (57), peripheral multiplexing, and power/ground pin locations. However, flash size difference (32 KB vs. 60 KB) does not affect pinout - making them hardware-compatible for drop-in replacement where firmware fits.