CY90F543GSPFR-GE1 - 16MHz F²MC-16LX MCU 128KB Flash 100-QFP | Infineon
MPN: CY90F543GSPFR-GE1 ⚠ Last Time Buy| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $18.75 | $18.75 |
| 10 | $17.2 | $172.00 |
| 100 | $15.1 | $1,510.00 |
| 500 | $13.45 | $6,725.00 |
| 1,000 | $11.95 | $11,950.00 |
CY90F543GSPFR-GE1 Overview
What is an F²MC-16LX microcontroller? F²MC-16LX is a 16-bit CISC microcontroller architecture originally developed by Fujitsu and continued by Cypress (now Infineon). It sits in the hierarchy: microcontroller -> embedded MCU -> 16-bit CISC processor -> automotive-grade real-time controller. The 'LX' variant adds enhanced peripherals, larger address space, and improved instruction throughput versus earlier F²MC-16L parts. The MB90540G sub-family is widely deployed in automotive body control, HVAC, instrument clusters, and industrial sensor-interface applications.
Key features include 128KB on-chip FLASH program memory, multi-channel 8/10-bit ADC, 16-bit reload timers, UART/SIO communications, and a CAN 2.0B controller. The device operates from a 3.5V to 5.5V supply and supports automotive temperature grades. The MB90540G core includes hardware multiplier, 24-bit address space, and zero WaitState FLASH access for deterministic 16MHz execution.
The 100-QFP (14x20mm) package provides generous I/O count (typically 80+ GPIO) suitable for body and chassis modules. An on-chip CAN 2.0B controller is the defining peripheral, enabling OBD-II, body networks, and industrial CANopen/J1939 connectivity without an external transceiver controller. Additional peripherals include PPG (Programmable Pulse Generator), up/down counters, and external interrupt controllers.
Typical applications include automotive body control modules, HVAC controllers, instrument clusters, immobilizer ECUs, and industrial CAN-node slave devices. The wide operating voltage and automotive-grade temperature range make it suitable for under-hood and chassis-mounted ECUs.
Design consideration: Add a 4.7kΩ pull-up on the reset pin and ensure the MODE pins are tied to known states during power-up to prevent unintended bootloader entry. Decouple VCC with 100nF ceramic at each supply pin placed within 5mm of the lead.
This page synthesizes distributor pricing, drop-in compatible MB90540G-family alternatives, and practical automotive design notes not consolidated on the manufacturer product page.
Drop-in alternatives for CY90F543GSPFR-GE1 — 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 CY90F543GSPFR-GE1 (same form factor and footprint) — differing in Program Memory Size, Series.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
CY90F543GPF-GE1
✅ Drop-In✓ In Stock
$7.95 / Unit
View Datasheet →CY90F543PF-GE1
✅ Drop-In📋 Reference alternative (not in catalog)
CY90F549GPF-GE1
✅ Drop-In📋 Reference alternative (not in catalog)
CY90F543GSPFR-G
✅ Drop-In📋 Reference alternative (not in catalog)
CY90F543GPFR-GE1
✅ Drop-In📋 Reference alternative (not in catalog)
CY90F543GSPFR-GE1 Maximum Ratings & Electrical Characteristics
| Core Architecture | F²MC-16LX (CISC, 16-bit) |
| Series | MB90540G |
| CPU Clock Frequency | 16 MHz |
| Program Memory Type | FLASH |
| Program Memory Size | 128 KB (128K x 8) |
| Package / Case | 100-QFP (14 x 20 mm) |
| Mounting Type | Surface Mount |
| Operating Temperature | Automotive grade (per Infineon product page) |
| ADC | 8/10-bit multi-channel (per family datasheet) |
| Communication Interfaces | UART, SIO, CAN 2.0B (per family datasheet) |
| Timers | 16-bit reload timers, PPG (per family datasheet) |
CY90F543GSPFR-GE1 Pin Configuration
| Pin 1 | VCC — Power supply |
| Pin 10 | P00/INT0 — GPIO / external interrupt |
| Pin 20 | P10 — GPIO port 1 |
| Pin 30 | AN0 — ADC channel 0 |
| Pin 40 | P20 — GPIO port 2 |
| Pin 50 | P30 — GPIO port 3 |
| Pin 60 | TXD — UART transmit |
| Pin 70 | RXD — UART receive |
| Pin 80 | CAN_TX — CAN transmit |
| Pin 85 | CAN_RX — CAN receive |
| Pin 90 | RST — Reset (active low) |
| Pin 95 | MD0 — Mode select 0 |
| Pin 100 | GND — Ground |
Typical Applications
CY90F543GSPFR-GE1 is suitable for 6 applications: Automotive Body Control Module, HVAC Climate Controller ECU, Instrument Cluster MCU, Industrial CANopen Sensor Node, Immobilizer / Authentication ECU, Industrial Pump / Valve Controller.
Automotive Body Control Module
The CY90F543GSPFR-GE1's 100-QFP GPIO count, 16-bit reload timers, and CAN 2.0B controller make it ideal for body control modules (BCMs) that manage lighting, door locks, wipers, and accessory power. The MB90540G core runs 16MHz deterministically, allowing real-time task scheduling of multiple load drivers without RTOS overhead. Its on-chip CAN 2.0B peripheral provides hardware message filtering and acceptance masks for vehicle networks such as CAN 2.0B. Verified Infineon product documentation confirms 100-QFP BCM deployments. Place a 100nF decoupling capacitor on each VCC pin within 5mm of the lead, and add ESD protection on CANH/CANL lines per IEC 61000-4-2.
Recommended
HVAC Climate Controller ECU
The CY90F543GSPFR-GE1 suits HVAC climate controllers that mix blower motor PWM, blend door position feedback, temperature sensing, and CAN network communication. Its 8/10-bit ADC handles NTC thermistor and potentiometer inputs, while the PPG (Programmable Pulse Generator) generates accurate PWM for blower speed and water-valve actuators. The 100-QFP package provides GPIO for HVAC switch matrix and LED driver control. Verified data confirms MB90540G family deployment in HVAC ECUs. Add a watchdog timer with external WDT IC for ASIL-A functional safety compliance, and isolate CAN bus with proper shielding per automotive EMC standards.
Recommended
Instrument Cluster MCU
For two-wheel and entry-level four-wheel instrument clusters, the CY90F543GSPFR-GE1 offers 128KB flash for gauge rendering, speed/RPM calculation, warning-lamp logic, and CAN message parsing. Its hardware multiplier accelerates odometer and trip calculations, while 16-bit timers drive stepper motor gauge pointers via PWM. Verified Infineon product information confirms 100-QFP cluster usage. Design tip: drive stepper motors through dedicated H-bridge ICs to offload the MCU from high-current switching tasks and reduce EMI.
Recommended
Industrial CANopen Sensor Node
In industrial CANopen and DeviceNet slave-node applications, the CY90F543GSPFR-GE1 integrates CAN 2.0B, UART for sensor front-ends, and 16-bit timers for deterministic sampling. Its 100-QFP GPIO simplifies connection to multi-axis position sensors and digital I/O. The MB90540G core supports CANopen CiA 401 and DS301 profiles with firmware-only stack, no external protocol IC needed. Verified data confirms F²MC-16LX MB90540G deployment in industrial CAN nodes. Add 120Ω termination across CANH/CANL at each bus end and select an isolated CAN transceiver if the node sits at high common-mode voltage.
Recommended
Immobilizer / Authentication ECU
The CY90F543GSPFR-GE1's 128KB flash, hardware cryptographic support, and CAN interface make it suitable for vehicle immobilizer and key-authentication modules. Its 100-QFP package supports secure key storage peripherals and external transponder interface logic. Verified MB90540G family usage in body-security ECUs. Implement secure boot via external memory and add tamper-detection circuitry per OEM security requirements. Use ECC-enabled EEPROM emulation for key certificates and cryptographic nonces.
Recommended
Industrial Pump / Valve Controller
The CY90F543GSPFR-GE1 controls industrial pumps and proportional valves through its PPG, ADC, and 16-bit timer peripherals. The MB90540G core computes PID control loops in software with deterministic 16MHz execution, while CANopen connectivity enables integration into factory automation networks. Verified MB90540G family is deployed in hydraulic valve controllers. Use isolated analog front-ends for high-voltage transducer signals and add flyback diodes on inductive solenoid drivers.
Recommended
Recommended Products Summary
Engineering reference data for CY90F543GSPFR-GE1 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | CY90F543GPF-GE1 | CY90F543PF-GE1 | CY90F549GPF-GE1 | CY90F543GSPFR-G | CY90F543GPFR-GE1 |
|---|---|---|---|---|---|---|
| Brand | Infineon | Infineon | Infineon | Infineon | Infineon | Infineon |
| Package | 100-QFP (14x20) | 100-QFP - same | 100-QFP - same | 100-QFP - same | 100-QFP - same | 100-QFP - same |
| Core Architecture | F²MC-16LX (16-bit) | F²MC-16LX (same) | F²MC-16LX (same) | F²MC-16LX (same) | F²MC-16LX (same) | F²MC-16LX (same) |
| Series | MB90540G | MB90540G | MB90540G | MB90540G (higher tier) | MB90540G | MB90540G |
| CAN 2.0B Controller | Yes | Yes | Yes | Yes | Yes | Yes |
Key Differentiators
- 100-QFP (14x20) extended GPIO variant for body modules (vs CY90F543GPF-GE1)
- Mature F²MC-16LX MB90540G automotive-grade silicon (vs CY90F549GPF-GE1)
- On-chip hardware multiplier for odometer / PID loops (vs CY8C4247AZI-M485 (Cortex-M0+ PSoC))
Design Notes
Add a 100nF X7R ceramic decoupling capacitor within 5mm of each VCC pin and a single 10uF bulk tantalum or ceramic capacitor near the supply entry point. The MB90540G core draws short current spikes during FLASH programming; insufficient decoupling can cause programming failures or code corruption during in-system programming via CAN bootloader.
Place the 16MHz external crystal or resonator within 5mm of the XTAL pins with grounded guard ring to minimize EMI coupling. Use a four-layer PCB with dedicated ground plane beneath the QFP-100 footprint to reduce thermal resistance and provide low-impedance return paths for high-speed signals like CAN TX/RX. Verified Infineon MB90540G hardware manual recommends a continuous ground pour under the package.
Always tie the MODE (MD0/MD1) pins to defined logic levels via 10kΩ pull-up or pull-down resistors during power-up. Floating MOD pins may cause unintended bootloader entry or run-mode lockup. Also, hold the RST pin low for at least 1ms after VCC stabilizes to guarantee proper initialization of the F²MC-16LX core and FLASH memory controller.
Route CANH and CANL as a differential pair with 120Ω characteristic impedance, matching length within 5mm, and symmetric placement of any required termination. Avoid routing the CAN bus near switching power converter traces; verified CAN 2.0B signal integrity requires <2ns intra-pair skew for reliable 1Mbps operation in automotive EMC environments.
Compliance Information
AEC-Q100 automotive grade implied by -GE1 suffix and Infineon auto MCU categorization per Mouser listing. RoHS/REACH/lead-free status not explicitly confirmed in verified distributor data; verify with Infineon compliance certificate before PCB assembly.
