MC9S08DZ32ACLH - 8-bit 40MHz 32KB Flash CAN MCU | NXP | LQFP-64
MPN: MC9S08DZ32ACLH ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $8.94 | $8.94 |
| 10 | $7.62 | $76.20 |
| 100 | $6.45 | $645.00 |
| 500 | $5.81 | $2,905.00 |
| 1,000 | $5.32 | $5,320.00 |
MC9S08DZ32ACLH Overview
What is an 8-bit MCU with embedded CAN? An 8-bit microcontroller is a single-chip computer built around a byte-wide data path executing arithmetic and logic over 8-bit registers at modest clock rates. It belongs to the broader product hierarchy: microcontroller -> embedded processor -> semiconductor. When an MCU integrates a CAN (Controller Area Network) peripheral, it becomes a network node capable of communicating on the robust differential bus originally defined by Bosch for in-vehicle multiplexing between ECUs.
Key features include an enhanced HCS08 core with BGND instruction for background debug, up to 32 interrupt/reset sources, on-chip EEPROM emulation, a multi-channel timer/PWM module, an analog-to-digital converter (ADC), serial communication interfaces (SCI/SPI/I2C), and a segment-LCD driver supporting human-machine interface panels. The internal clock synthesis and low-power stop modes allow the part to operate in always-on systems where quiescent current is critical.
The MC9S08DZ32ACLH uses a CISC-style instruction set inherited from the HC08 family, with extensions for hardware multiply and divide assists. The 40MHz core drives a 20MHz peripheral bus, and embedded CAN hardware offloads message filtering and frame handling from the CPU. 32KB of Flash supports in-application reprogramming over the CAN or LIN physical layer for field firmware updates.
Typical applications include CAN-connected automotive body controllers (door modules, seat controllers, HVAC nodes), industrial sensor hubs with LIN or CAN backhaul, consumer white-goods user-interface boards with LCD segment displays, and remote-control units requiring onboard CAN diagnostics. Designers also use the part in motor-control peripherals and low-cost LIN slaves.
When designing with this device, allocate the 2KB RAM carefully - the CAN mailbox and stack consume a meaningful fraction in busy message loops. Decouple VDD with a 100nF ceramic capacitor close to the pins and follow the reference manual's guidance on PCB layout for the oscillator circuit to avoid jitter at startup.
Drop-in alternatives for MC9S08DZ32ACLH — 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 MC9S08DZ32ACLH (same form factor and footprint) — differing in Instruction Set, Program Memory Size, Supply Voltage, Package, EEPROM.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MC9S08DZ60ACLC
✅ Drop-In📋 Reference alternative (not in catalog)
MC9S08DZ96CLH
✅ Drop-In✓ In Stock
$6.21 / Unit
View Datasheet →MC9S08DZ32AMLH
✅ Drop-In✓ In Stock
Contact for price
View Datasheet →S9S08DZ32F2CLH
✅ Drop-In📋 Reference alternative (not in catalog)
MC9S08DV128CLH
✅ Drop-In✓ In Stock
$4.42 / Unit
View Datasheet →MC9S08DZ32ACLH Maximum Ratings & Electrical Characteristics
| Core | HCS08 (enhanced S08) |
| Data Bus Width | 8 bit |
| Maximum Clock Frequency | 40 MHz (CPU); 20 MHz bus |
| Program Memory Size | 32 KB Flash |
| RAM Size | 2 KB |
| Supply Voltage Range | 2.7 V to 5.5 V |
| Operating Temperature Range | -40 C to +85 C |
| Package | 64-LQFP (10x10 mm) |
| Mounting Type | Surface Mount |
| Connectivity | CANbus, I2C, LINbus, SCI, SPI |
| Peripherals | LCD driver, ADC, PWM, TIM, BDM |
| Number of I/Os | 54 (typical, varies by peripheral allocation) |
| MSL Level | 3 (168 Hours) |
| RoHS Status | Compliant |
| Instruction Set | HC08 with BGND extension |
| On-chip Debug | Background Debug Mode (BDM) |
MC9S08DZ32ACLH Pin Configuration
| Pin 1 | PTC0 — General-purpose I/O / timer channel |
| Pin 8 | TCLK — Timer external clock input |
| Pin 16 | VDD — Digital supply voltage |
| Pin 32 | VSS — Digital ground |
| Pin 40 | CANTX — MSCAN transmit output |
| Pin 41 | CANRX — MSCAN receive input |
| Pin 48 | RESET — Active-low external reset |
| Pin 50 | BKGD — Background Debug Mode (BDM) |
| Pin 56 | XTAL — Oscillator input |
| Pin 57 | EXTAL — Oscillator input/output |
Typical Applications
MC9S08DZ32ACLH is suitable for 7 applications: Automotive CAN Body Control Module, Industrial Sensor Hub with LIN Backhaul, White-Goods User Interface with LCD, Automotive Diagnostic and Telematics Module, Motor Control Peripheral Board (BLDC/Fan/Compressor), Low-Cost Remote-Control Unit (RCU) with RF, Battery Management Sub-Module (BMS).
Automotive CAN Body Control Module
The MC9S08DZ32ACLH targets automotive body controllers such as door modules, seat controllers, and HVAC nodes where reliable CAN networking and modest code size are required. Its integrated MSCAN peripheral supports CAN 2.0A/B with hardware message filtering, offloading the CPU from per-bit processing. The 40 MHz HCS08 core executes roughly 20 MIPS, sufficient for LIN-to-CAN gateway tasks. The 2 KB RAM accommodates the CAN mailbox stack plus application logic. Typical BOM cost is lowered by combining CAN, SCI/SPI, and the LCD driver on a single chip, avoiding an external display controller. Operating temperature range of -40 C to +85 C covers passenger-compartment environments. Designers should pair the device with an external CAN transceiver such as the TJA1043 or NXP's own TJA1055.
Recommended
Industrial Sensor Hub with LIN Backhaul
The MC9S08DZ32ACLH is well-matched to industrial sensor hubs that aggregate analog or digital inputs and forward them through a LIN bus toward a higher-level ECU. The on-chip ADC samples multiple channels while timer/PWM drives actuator outputs. SCI block, with firmware and an external LIN transceiver (e.g., TJA1027), delivers LIN 2.0 slave support. The wide 2.7 V-5.5 V supply accepts 3.3 V and 5 V rails common in industrial panels. Background Debug Mode enables in-circuit firmware updates during panel bring-up. The device's low-power stop modes allow always-on sensor nodes to meet factory energy budgets. Real-world designs segment the 32 KB Flash into bootloader-plus-application regions for field updates over LIN.
Recommended
White-Goods User Interface with LCD
White-goods appliances such as washing machines, dishwashers, and induction cookers pair the MC9S08DZ32ACLH with a segment-LCD front panel to deliver user feedback plus appliance control. The integrated LCD driver removes the need for an external display controller, reducing BOM cost by 30 to 50 cents per board. The 54 general-purpose I/O pins drive key matrices, LED indicators, and rotary encoders. The 40 MHz core, 2 KB RAM, and on-chip PWM give just-enough headroom for motor-control peripherals such as BLDC or universal motors. The -40 C to +85 C range addresses laundry-room and kitchen-environmental stress. Designers use the on-chip BDM port to factory-flash production firmware.
Recommended
Automotive Diagnostic and Telematics Module
Automotive telematics and OBD-II diagnostic devices rely on the MC9S08DZ32ACLH for CAN message capture, UDS-style service handling, and gateway/routing between the diagnostic port and vehicle networks. The on-chip MSCAN and a second CAN-bit-banged channel covers dual-bus OBD-II. Code space of 32 KB and 2 KB RAM are sufficient for ISO 15765 and ISO 14229 transport-layer stacks. The 64-LQFP package exposes enough pins to connect both CAN channels plus a USB-SCI bridge and a status LED. The device operates across 2.7 V-5.5 V and survives cranking transients when paired with a proper automotive voltage regulator. The HCS08 core has the BGND instruction for fast firmware provisioning at the end of the manufacturing line.
Recommended
Motor Control Peripheral Board (BLDC/Fan/Compressor)
The MC9S08DZ32ACLH handles small motor-control tasks including BLDC fans, refrigerator compressors, and small pumps where the integrated timer/PWM and ADC simplify the analog front end. The 40 MHz HCS08 core schedules the commutation state machine, current sensing, and protective shutoff within microsecond response windows. The 2 KB RAM buffers current-loop samples while the 32 KB Flash stores motor-parameter tables. CAN or SCI comms let the board report telemetry to a master controller. The 64-LQFP keeps the footprint compact in appliance and HVAC compressor stages. The on-chip PWM module supports complementary outputs with dead-time insertion for half-bridge drivers.
Recommended
Low-Cost Remote-Control Unit (RCU) with RF
Cost-sensitive remote-control units, from industrial key fobs to building-control remotes, take advantage of the MC9S08DZ32ACLH's interrupt-driven I/O and low-power stop modes. The device wakes on a button interrupt, performs an action, then returns to sub-mA sleep. The SCI or SPI peripheral pairs with an external RF transceiver for one-way or two-way links. 32 KB Flash accommodates rolling-code encryption or addressing tables; 2 KB RAM holds the transmit buffer. The 64-LQFP allows generous I/O for key matrices and LED indicators. BDM programming simplifies fleet provisioning. Designers keep the clock on the internal reference at low frequencies and switch to FLL only for active transmissions.
Recommended
Battery Management Sub-Module (BMS)
The MC9S08DZ32ACLH plays a useful role in battery-management sub-modules where cell monitoring, passive balancing, and fault logging are required but the main controller is reserved for pack-level control. The device's ADC reads individual cell voltages while timer pins drive balance resistors. CAN and SCI allow the sub-module to report cell health to the pack controller and accept configuration updates. The 2.7 V-5.5 V supply is compatible with 3.3 V LDO regulators after a pre-regulator clamps the high-voltage pack. The integrated LCD driver helps drive status displays on service tools. The 32 KB Flash stores cell-lookup tables and balancing algorithms.
Recommended
Recommended Products Summary
Engineering reference data for MC9S08DZ32ACLH — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MC9S08DZ60ACLC | MC9S08DZ96CLH | MC9S08DZ32AMLH | S9S08DZ32F2CLH | MC9S08DV128CLH |
|---|---|---|---|---|---|---|
| Package | 64-LQFP (10x10 mm) | 64-LQFP - same | 64-LQFP - same | 64-LQFP - same | 64-LQFP - same | 64-LQFP - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Core | HCS08 8-bit | HCS08 8-bit | HCS08 8-bit | HCS08 8-bit | HCS08 8-bit | HCS08 8-bit |
| Flash Memory | 32 KB | 60 KB | 96 KB | 32 KB | 32 KB | 128 KB |
| CPU Clock | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz |
| CAN Peripheral | Yes (MSCAN) | Yes (MSCAN) | Yes (MSCAN) | Yes (MSCAN) | Yes (MSCAN) | Yes (MSCAN) |
| LCD Driver | Yes | Yes | Yes | Yes | Yes | Yes |
| Lifecycle Status | NRND | Active | Active | Active | Active | Active |
Key Differentiators
- Integrated CAN, LCD driver, and 32 KB Flash in a 64-LQFP single-chip solution (vs Generic 8-bit MCU without CAN)
- Drop-in 60 KB Flash upgrade on the same 64-LQFP footprint (vs MC9S08DZ60ACLC)
- On-chip Background Debug Mode (BDM) interface (vs Pre-programmed only MCUs from competitors)
Design Notes
Decouple each VDD pin with a 100 nF ceramic capacitor placed within 5 mm of the IC, and add a 1-10 uF bulk capacitor on the supply rail. The S08DZ family can reset unpredictably during high-current transients if decoupling is inadequate, especially when driving segmented LCD or firing CAN frames. Estimated: based on typical HCS08 decoupling recommendations; consult the device's reference manual for the precise capacitor count.
Place the oscillator crystal or resonator near the XTAL/EXTAL pins and route it over a continuous ground pour to minimize EMI pickup. Avoid routing high-speed signals (CAN, SCI, SPI clock) directly under or near the oscillator trace. Use a guard ring around the oscillator components to shield against radiated coupling from switching regulators on the same board. Reference: Freescale/NXP application note on oscillator PCB layout for S08 family MCUs.
Do not forget to configure the MSCLK and the CAN timing segment registers for the actual oscillator frequency in your board - many bootloading failures on legacy HCS08 designs stem from incorrect CAN baud-rate calculations. The 32 KB Flash is segmented: reserve the last 1-2 KB for the bootloader region if you plan in-application reprogramming. The 2 KB RAM must be split between stack, CAN message buffers, and application data; monitor usage at link time to avoid silent overflow.
Compliance Information
RoHS-compliant per NXP product page. Standard 8-bit industrial-grade MCU; not AEC-Q100 qualified. Halogen-free status not explicitly stated in the manufacturer datasheet we reviewed.