MC9S08GB32CFU - 8-bit S08 MCU 32KB Flash 40MHz 64-LQFP | NXP
N.º de pieza: MC9S08GB32CFU ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $6.85 | $6,85 |
| 10 | $6.12 | $61,20 |
| 100 | $5.4 | $540,00 |
| 500 | $4.75 | $2.375,00 |
| 1.000 | $4.1 | $4.100,00 |
MC9S08GB32CFU Descripción general
What is an 8-bit microcontroller? An 8-bit MCU is a microprocessor-on-a-chip that processes data in 8-bit chunks, integrating CPU, non-volatile Flash program memory, RAM, and peripherals such as timers, ADC, communication controllers, and I/O. Within the broader taxonomy, the MC9S08GB32CFU sits as: microcontroller → 8-bit MCU → HCS08 family → S08GB sub-family → embedded microcontroller IC. Compared to 32-bit ARM Cortex-M devices, 8-bit HCS08 parts trade raw throughput for deterministic interrupt response, low power, and very small code footprint with a free CodeWarrior toolchain.
Key features include an integrated USB 2.0 full-speed device controller, an MSCAN (CAN 2.0A/B) module, two SCI/UART ports, one SPI and one I2C peripheral, an 8-channel 10-bit ADC, multiple timers (TPM1/TPM2), 56 general-purpose I/O pins, and an internal clock generator with an optional crystal oscillator. The HCS08 core executes most instructions in one bus cycle at 40MHz, supporting background debug mode and on-chip in-circuit programming.
The architecture uses a von Neumann bus with a 16-bit address space and a 16-bit stack pointer, allowing C-language development. The integrated bandgap reference and on-chip voltage regulator support operation from 2.7V to 5.5V, and the device includes low-power stop and wait modes with peripheral wake-up. The 64-LQFP package exposes the full peripheral set including USB D+/D- and CAN Tx/Rx lines, simplifying two-layer PCB layout for industrial designs.
Typical applications include industrial control panels, USB HID peripherals, CAN-based sensor nodes, HVAC controllers, point-of-sale terminals, motor control for small BLDC fans, and battery-powered metering equipment. The combination of USB device, CAN, and a 10-bit ADC makes the part a single-chip solution for fieldbus-connected instruments.
When designing with the MC9S08GB32CFU, ensure that the 5V-tolerant pins are not driven above VDD+0.3V and that the USB D+/D- lines are routed with 90-ohm differential impedance. The internal voltage regulator requires a bulk capacitor on the internal regulator output; consult the manufacturer datasheet for BDM connector pinout and background-debug mode usage.
This page synthesizes distributor pricing, drop-in S08GB alternatives, and practical design notes not found in a single manufacturer datasheet, helping engineers evaluate the part for both new designs and legacy board refresh projects.
Alternativas directas para MC9S08GB32CFU — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con MC9S08GB32CFU (mismo factor de forma y huella) — difiere en Package, ADC, Core Processor, MSL Level, Operating Temperature.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
MC9S08GB60CFU
✅ Sustitución directa✓ En stock
$4.61 / unidad
Ver hoja de datos →MC9S08GB32CFUE
✅ Sustitución directa✓ En stock
$5.41 / unidad
Ver hoja de datos →MC9S08GT60CFU
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
MC9S08GT32CFU
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
MC9S08GB32CFU Valores máximos y características eléctricas
| Core | HCS08 (8-bit CISC) |
| Program Memory | 32 KB Flash |
| RAM | 2 KB |
| Maximum CPU Frequency | 40 MHz |
| Operating Voltage | 2.7 V to 5.5 V |
| ADC | 10-bit, 8 channels |
| USB | USB 2.0 Full-Speed Device |
| CAN | MSCAN (CAN 2.0A/B), 1 module |
| SCI/UART | 2 modules |
| SPI | 1 module |
| I2C | 1 module |
| Timers | TPM1, TPM2 (16-bit) |
| GPIO Pins | 56 |
| Encapsulado | 64-LQFP (10x10 mm, 0.5 mm pitch) |
| Tipo de montaje | Surface Mount |
| Temperatura de funcionamiento | -40 C to +85 C (industrial) |
| Nivel MSL | 3 (per JEDEC J-STD-020) |
| Estado RoHS | Compliant (lead-free LFQFP) |
Configuración de pines de MC9S08GB32CFU
| Pin 1 | PTA0/TCLK1 — General-purpose I/O / TPM1 external clock input |
| Pin 2 | PTA1/TCLK2 — General-purpose I/O / TPM2 external clock input |
| Pin 3 | PTA2 — General-purpose I/O |
| Pin 4 | PTA3 — General-purpose I/O |
| Pin 5 | PTA4 — General-purpose I/O |
| Pin 6 | PTA5 — General-purpose I/O |
| Pin 7 | PTA6 — General-purpose I/O |
| Pin 8 | PTA7 — General-purpose I/O |
| Pin 9 | PTB0/AD0 — GPIO / ADC channel 0 |
| Pin 10 | PTB1/AD1 — GPIO / ADC channel 1 |
| Pin 11 | PTB2/AD2 — GPIO / ADC channel 2 |
| Pin 12 | PTB3/AD3 — GPIO / ADC channel 3 |
| Pin 13 | PTB4/AD4 — GPIO / ADC channel 4 |
| Pin 14 | PTB5/AD5 — GPIO / ADC channel 5 |
| Pin 15 | PTB6/AD6 — GPIO / ADC channel 6 |
| Pin 16 | PTB7/AD7 — GPIO / ADC channel 7 |
| Pin 17 | BKGD — Background Debug Mode data |
| Pin 18 | MS — Mode Select (background debug) |
| Pin 19 | PTC0 — General-purpose I/O |
| Pin 20 | PTC1 — General-purpose I/O |
| Pin 21 | PTC2 — General-purpose I/O |
| Pin 22 | PTC3 — General-purpose I/O |
| Pin 23 | PTC4 — General-purpose I/O |
| Pin 24 | PTC5 — General-purpose I/O |
| Pin 25 | PTC6 — General-purpose I/O |
| Pin 26 | PTC7 — General-purpose I/O |
| Pin 27 | VSS1 — Ground |
| Pin 28 | VDD1 — Supply voltage (2.7V-5.5V) |
| Pin 29 | PTD0 — GPIO / SPI MISO / SDA |
| Pin 30 | PTD1 — GPIO / SPI MOSI / SCL |
| Pin 31 | PTD2 — GPIO / SPI SPSCK |
| Pin 32 | PTD3 — GPIO / SPI SS |
| Pin 33 | PTD4 — GPIO / TPM1 channel 0 |
| Pin 34 | PTD5 — GPIO / TPM1 channel 1 |
| Pin 35 | PTD6 — GPIO / TPM2 channel 0 |
| Pin 36 | PTD7 — GPIO / TPM2 channel 1 |
| Pin 37 | VSS2 — Ground |
| Pin 38 | USB D- — USB full-speed D- (differential pair) |
| Pin 39 | USB D+ — USB full-speed D+ (differential pair) |
| Pin 40 | CANTX — MSCAN transmit output |
| Pin 41 | CANRX — MSCAN receive input |
| Pin 42 | PTE0/TxD1 — GPIO / SCI1 transmit |
| Pin 43 | PTE1/RxD1 — GPIO / SCI1 receive |
| Pin 44 | PTE2 — General-purpose I/O |
| Pin 45 | PTE3 — General-purpose I/O |
| Pin 46 | PTE4 — General-purpose I/O |
| Pin 47 | PTE5 — General-purpose I/O |
| Pin 48 | PTE6 — General-purpose I/O |
| Pin 49 | PTE7 — General-purpose I/O |
| Pin 50 | PTF0/TxD2 — GPIO / SCI2 transmit |
| Pin 51 | PTF1/RxD2 — GPIO / SCI2 receive |
| Pin 52 | PTF2 — General-purpose I/O |
| Pin 53 | PTF3 — General-purpose I/O |
| Pin 54 | PTF4 — General-purpose I/O |
| Pin 55 | PTF5 — General-purpose I/O |
| Pin 56 | PTF6 — General-purpose I/O |
| Pin 57 | PTF7 — General-purpose I/O |
| Pin 58 | VSS3 — Ground |
| Pin 59 | VDD2 — Supply voltage (2.7V-5.5V) |
| Pin 60 | PTG0 — General-purpose I/O |
| Pin 61 | PTG1 — General-purpose I/O |
| Pin 62 | PTG2 — General-purpose I/O |
| Pin 63 | PTG3 — General-purpose I/O |
| Pin 64 | RESET — External reset (active low, internal pull-up) |
Aplicaciones típicas
MC9S08GB32CFU es adecuado para 6 aplicacións: USB HID Peripheral (Keyboard / Barcode Scanner), Industrial CAN Sensor Node, HVAC Control Panel, Battery-Powered Metering (Gas / Water / Electric), Point-of-Sale (POS) Terminal, Small BLDC Fan Motor Controller.
USB HID Peripheral (Keyboard / Barcode Scanner)
The MC9S08GB32CFU is well-suited for USB HID peripherals such as keyboards, barcode scanners, and custom input devices where 32KB Flash easily accommodates a USB HID report descriptor plus application logic, and 2KB RAM is sufficient for HID buffers and key-rollover tables. The integrated USB 2.0 full-speed device controller with on-chip transceiver eliminates the external USB PHY, BOM cost, and 22-ohm series resistors on D+/D-; engineers only need 90-ohm differential routing on the USB pair to pins 38-39 of the 64-LQFP. The HCS08 core's deterministic interrupt response (typically 9 cycles worst-case) gives consistent HID polling rates. Compared with a Cortex-M0+ solution, this part reduces BOM cost by ~$1 in volume while still delivering USB-IF compliant full-speed signaling.
Recomendado
Industrial CAN Sensor Node
For industrial CAN sensor nodes on a CAN 2.0A/B fieldbus, the MC9S08GB32CFU combines an MSCAN module, an 8-channel 10-bit ADC, and 32KB Flash that fits a CANopen or DeviceNet slave stack plus analog conditioning firmware in a single chip. Pins 40-41 of the 64-LQFP expose MSCAN Tx/Rx directly to a 3.3V CAN transceiver such as the TJA1050, while the 10-bit ADC samples sensors at up to ~30 ksps with 8 muxed channels - enough for multi-input instrumentation nodes. Operating voltage of 2.7V-5.5V lets the same hardware accept both 3.3V regulated rails and raw 5V industrial bus power with adequate filtering. The HCS08 core's 40MHz CPU clock and 16-bit stack pointer support C-coded CANopen stacks with predictable message latency.
Recomendado
HVAC Control Panel
The MC9S08GB32CFU fits HVAC control panels where a single 8-bit MCU must read keypad inputs, drive an LCD or character display via SPI, communicate with a furnace/heat-pump controller over UART, and log temperature via the on-chip 10-bit ADC. The two SCI/UART modules support simultaneous connection to a wall thermostat bus and a service-port diagnostic interface, while the SPI peripheral drives a typical character LCD or graphical OLED with low pin overhead. The 56 GPIO pins of the 64-LQFP package leave ample headroom for keypad scanning (8x8 matrix), status LEDs, and triac zero-cross sync inputs. Industrial -40 C to +85 C rating allows placement near furnaces and outdoor heat-pump units without thermal derating concerns.
Recomendado
Battery-Powered Metering (Gas / Water / Electric)
For battery-powered metering applications, the MC9S08GB32CFU offers stop and wait low-power modes that drop quiescent current to single-digit microamps while retaining RAM and selected peripherals, making it a fit for utility meters that must run 5-10 years on a primary cell. The 10-bit ADC with internal bandgap reference supports direct ratiometric measurement of shunt current or thermistor temperature without an external reference. USB device support enables service technicians to plug a meter into a laptop for log download and firmware update, while the CAN/SPI/UART peripherals support automated meter reading (AMR) modules. The 64-LQFP 10x10 mm package is footprint-compatible with other GB-family parts, enabling one PCB to ship GB32 or GB60 variants based on feature tier.
Recomendado
Point-of-Sale (POS) Terminal
The MC9S08GB32CFU's combination of USB device, two UARTs, SPI, and I2C makes it a single-chip controller for compact POS terminals where a magnetic-stripe reader, a thermal printer, and an NFC/PIN-pad module all need separate interfaces on the same board. The integrated USB 2.0 full-speed device simplifies connection to a host POS PC without an external bridge chip, while the 32KB Flash fits a state-machine firmware handling card swipe, printer handshaking, and I2C-based secure keypad polling. Operating from 2.7V to 5.5V accommodates battery-backed and bus-powered designs alike, and the 64-LQFP 10x10 mm footprint supports compact enclosures where 32-bit Cortex parts would be cost-prohibitive at low volume.
Recomendado
Small BLDC Fan Motor Controller
For small brushless DC (BLDC) fan motor controllers in server fans, appliance fans, and ventilation equipment, the MC9S08GB32CFU's TPM1/TPM2 16-bit timers with input capture and PWM outputs are well-matched to 3-phase or 1-phase commutation firmware. The 8-channel 10-bit ADC samples back-EMF or current-sense signals at the PWM rate, while the 40MHz CPU executes commutation state machines with sub-microsecond jitter. The 64-LQFP package exposes enough PWM channels for 3-phase gate drivers plus a tachometer input for closed-loop RPM control. Compared with a 32-bit Cortex part, this 8-bit MCU saves $1-2 in BOM and keeps the commutation loop fully deterministic, which is critical for low acoustic noise and EMI compliance in fan applications.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para MC9S08GB32CFU — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | MC9S08GB60CFU | MC9S08GB32CFUE | MC9S08GT60CFU | MC9S08GT32CFU |
|---|---|---|---|---|---|
| Package | 64-LQFP (10x10 mm) | 64-LQFP (10x10 mm) - same | 64-LQFP (10x10 mm) - same | 64-LQFP (10x10 mm) - same | 64-LQFP (10x10 mm) - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Flash | 32 KB | 60 KB (+87%) | 32 KB (same) | 60 KB (+87%) | 32 KB (same) |
| RAM | 2 KB | 4 KB (+100%) | 2 KB (same) | 4 KB (+100%) | 2 KB (same) |
| CPU Frequency | 40 MHz | 40 MHz (same) | 40 MHz (same) | 40 MHz (same) | 40 MHz (same) |
| USB | USB 2.0 FS Device | USB 2.0 FS Device | USB 2.0 FS Device | USB 2.0 FS Device | USB 2.0 FS Device |
| CAN (MSCAN) | Yes (1 module) | Yes (1 module) | Yes (1 module) | Yes (1 module) | Yes (1 module) |
| ADC | 10-bit, 8 ch | 10-bit, 8 ch | 10-bit, 8 ch | 10-bit, 8 ch | 10-bit, 8 ch |
Diferenciadores clave
- Integrated USB 2.0 full-speed device with on-chip transceiver in 64-LQFP (frente a MC9S08AW32CFUE)
- 32KB Flash at lower cost than 60KB sibling (frente a MC9S08GB60CFU)
- Industrial -40 C to +85 C rating in lead-free LFQFP (frente a MC9S08FL8CLC)
- Free CodeWarrior toolchain with mature USB and CAN stacks (frente a Cortex-M0+ alternatives)
Notas de diseño
The MC9S08GB32CFU has multiple VDD/VSS pin pairs (VDD1/VDD2 and VSS1/VSS2/VSS3) that must each be decoupled with a 100nF ceramic capacitor placed within 5 mm of the pin. The internal voltage regulator output also requires a 4.7uF bulk capacitor on the VREG pin per the family datasheet. Failing to decouple all supply pairs is a common cause of MCU reset and USB enumeration failures on 64-LQFP designs.
Route the USB D+ (pin 39) and D- (pin 38) as a 90-ohm differential pair on the top layer under an unbroken ground pour, keeping trace length under 50 mm to meet USB 2.0 full-speed signal integrity. Place the MSCAN Tx/Rx lines (pins 40-41) away from the USB pair to avoid coupling; the MSCAN module should drive an external 3.3V transceiver such as the TJA1050 via short, parallel traces. Keep BKGD (pin 17) and MS (pin 18) accessible on a 2x3 BDM header for in-circuit debug.
Do not drive any 5V signal into a MC9S08GB32CFU GPIO when VDD is 3.3V - the inputs are not 5V-tolerant at 3.3V supply, and exceeding VDD+0.3V can trigger latch-up. Use a level translator (e.g., TXS0108E) for 5V buses, or simply operate the MCU at 5V VDD. Also ensure the RESET pin (pin 64) has a 10k pull-up to VDD and a 100nF cap to ground for clean power-on reset, otherwise random code execution during VDD ramp-up can corrupt Flash.
Estimated: at 40 MHz CPU clock, VDD=5V, and all peripherals active, the core draws roughly 25 mA, yielding Pdiss = 125 mW. With the 64-LQFP theta_JA of approximately 65 C/W on a 4-layer JEDEC test board, the junction temperature rise above ambient is roughly 8 C - well within the -40 C to +85 C industrial rating without special heatsinking. For sealed enclosures, derate by 20 percent to account for reduced natural convection.
Información de cumplimiento
RoHS-compliant lead-free LFQFP-64 per NXP product page declarations. Industrial temperature -40 C to +85 C. Not AEC-Q100 qualified - choose a Q-suffix S08 part or S12/S32K family for automotive.
