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Infineon Technologies CY8C27243-12PVXE
- Part No.:
- CY8C27243-12PVXE
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 20-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
CY8C27243-12PVXE.pdf
- Description:
- IC MCU 8BIT 16KB FLASH 20SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,605
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Product details
Overview
CY8C27243-12PVXE from Cypress Semiconductor is an automotive-grade programmable mixed-signal array (PSoC) integrating an M8C 8-bit Harvard CPU, 16 KB Flash, 256 bytes SRAM, 8 digital PSoC blocks, and 12 analog PSoC blocks in a 28-pin SSOP package. It operates from 4.75–5.25 V across –40°C to +105°C, supports up to two UARTs, four 30 mA analog outputs, and rail-to-rail analog peripherals for embedded control in engine management and body electronics.
For engineers reviewing the CY8C27243-12PVXE datasheet, CY8C27243-12PVXE pinout, CY8C27243-12PVXE application, or CY8C27243-12PVXE equivalent, key selection criteria include its 12 MHz M8C core speed, configurable analog/digital blocks, ISSP support, extended temperature rating, and GPIO interrupt-on-change capability for real-time automotive sensing and actuation.
Technical Context
The CY8C27243-12PVXE implements a fully configurable mixed-signal architecture with global digital and analog interconnects enabling custom peripheral synthesis. Its M8C core executes at up to 12 MHz with 8×8 multiply/32-bit accumulate, supported by three clock sources: ±4% 24 MHz IMO, 32.768 kHz ILO, and optional ECO+PLL for crystal-accurate timing.
Digital resources include eight 8-bit blocks combinable into 8–32-bit timers, PWMs, CRC generators, and up to two full-duplex UARTs. Analog resources comprise twelve blocks supporting 6–14-bit ADCs (Delta Sigma/SAR), 6–9-bit DACs, programmable gain amplifiers (up to 93×), and filters - all routable to up to 12 analog-capable GPIO pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | M8C 8-bit Harvard architecture, 12 MHz max - enables deterministic real-time control with low-latency interrupt handling (17 vectors). |
| Memory | 16 KB Flash (4×64-byte protection blocks) + 256 bytes SRAM - supports secure firmware IP protection and small-footprint embedded code. |
| Analog Blocks | 12 configurable blocks (3 CT + 9 SC) - deliver programmable ADCs (up to 14-bit), DACs (up to 9-bit), PGAs (gain ≤93×), and active filters. |
| Digital Blocks | 8 programmable 8-bit blocks - combine into 8–32-bit timers, PWMs with dead-band, dual UARTs, SPI masters/slaves, and CRC modules. |
| GPIO | Up to 44 pins (25 mA sink, 30 mA analog output on 4 pins); 8 drive modes including open-drain and interrupt-on-change - simplifies direct sensor/actuator interfacing. |
| Operating Range | 4.75–5.25 V supply, –40°C to +105°C - certified for under-hood automotive applications per AEC-Q100 requirements. |
| Clocks | Internal 24 MHz IMO (±4%), 32.768 kHz ILO, optional ECO+PLL - provides flexible timing for RTC, PWM, and communication without external crystals. |
Pinout & Package
Package: 28-pin SSOP (0.300" wide), RoHS-compliant, lead-free, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power Supply | Main 4.75–5.25 V supply input for digital and analog systems; requires local decoupling. |
| VSS | Ground | Digital/analog common reference; separate AGND and DGND not implemented - shared ground design. |
| P0[0]–P0[7] | General-Purpose I/O | Port 0 pins support analog input (up to 12 total), interrupt-on-change, and 25 mA sink - used for sensor acquisition and switch monitoring. |
| P2[0]–P2[7] | General-Purpose I/O | Port 2 includes four pins capable of 30 mA analog output - drive solenoids, LEDs, or opamp loads directly. |
| XIN/XOUT | Crystal Oscillator Interface | Connects 32.768 kHz crystal for ECO mode; enables precise RTC and PLL-derived 24 MHz system clock. |
| RESET | Active-Low Reset Input | Asynchronous reset with internal pull-up; compatible with external watchdog or power supervisor signals. |
| SWD | Serial Wire Debug | Single-pin debug interface for ISSP programming and in-circuit emulation - eliminates need for dedicated JTAG header. |
Key Features
| Feature | Design Value |
|---|---|
| Configurable Analog System | 12 independent blocks support user-defined ADC/DAC/filter/amplifier topologies - eliminates discrete signal-conditioning components. |
| Dynamic Reconfiguration | Runtime switching between multiple PSoC block configurations - enables multi-mode operation (e.g., diagnostic vs. normal mode) without reset. |
| In-System Serial Programming | Single-pin SWD interface with partial Flash update capability - allows field firmware updates without removing device from PCB. |
| Automotive Qualification | AEC-Q100 Grade 2 qualified (–40°C to +105°C) with built-in LVD, POR, and watchdog - meets functional safety requirements for non-safety-critical ECUs. |
| Flexible Clock Architecture | Three independent clock sources plus programmable dividers - supports simultaneous high-speed PWM and low-power sleep timing. |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Monitoring throttle position, coolant temperature, and oxygen sensor signals while generating PWM for fuel injectors and idle air control valve. IC Role / Device Role / Timing Role: Mixed-signal controller performing analog sensor acquisition (12-bit Delta Sigma ADC), real-time closed-loop PWM generation (16-bit with dead-band), and CAN-adjacent serial comms via UART. Use Value: Integrates 6+ discrete analog front-ends and timer ICs into one die, reducing BOM count and PCB area by >40% versus MCU + ASIC approach. | Use Scenario: Managing door lock actuators, interior lighting dimming, window lift motors, and ambient light sensing in passenger compartment. IC Role / Device Role / Timing Role: Programmable I/O hub with 30 mA analog outputs driving LED strings, interrupt-capable GPIO for switch detection, and I²C master for sensor hub communication. Use Value: Eliminates need for external LED drivers and discrete comparators; GPIO drive strength and interrupt flexibility reduce external logic count by 3–5 ICs. |
| Transmission Control Unit (TCU) | Advanced Driver Assistance Systems (ADAS) Sensor Interface |
Use Scenario: Reading transmission fluid temperature and pressure sensors while controlling solenoid valves for gear shifting and torque converter lockup. IC Role / Device Role / Timing Role: High-reliability analog monitor and actuator driver with 14-bit SAR ADC for precision temp measurement and 30 mA analog outputs for solenoid biasing. Use Value: On-chip 1.3 V reference and rail-to-rail input buffers ensure <0.5% measurement error over full temperature range - meets ASIL-B diagnostic coverage targets. | Use Scenario: Conditioning signals from radar front-end IF stages or ultrasonic transducer receivers before digitization and preprocessing. IC Role / Device Role / Timing Role: Configurable analog front-end with programmable gain amplifier (up to 48×), 8-pole low-pass filter, and 12-bit incremental ADC - replaces opamp-filter-ADC chain. Use Value: Reduces signal path noise floor by 12 dB through integrated matched analog blocks; eliminates inter-stage coupling and layout sensitivity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar mixed-signal programmable controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C27443-12PVXE | Same core, 44-pin SSOP, adds 2 extra digital blocks and 4 additional GPIO - no change in analog block count or memory. | Supports larger I/O count and more complex digital logic (e.g., triple UART + SPI + I²C simultaneously). | Select when >28 GPIO or >8 digital blocks required; footprint incompatible with CY8C27243-12PVXE. |
| CY8C27643-12PVXE | Same package, adds 2 analog blocks and doubles SRAM to 512 bytes - Flash remains 16 KB. | Better suited for high-channel-count sensor fusion (e.g., 8+ analog inputs with simultaneous filtering). | Select when additional analog processing headroom or larger data buffers needed; identical pinout enables drop-in replacement. |
Compared with CY8C27443-12PVXE and CY8C27643-12PVXE, the CY8C27243-12PVXE offers optimal cost/performance balance for mid-complexity automotive nodes where 28-pin I/O count and baseline analog/digital resource allocation meet functional requirements without over-provisioning.
Availability
CY8C27243-12PVXE is available at Aetrix Electronics and suitable for engine control units, body control modules, transmission control units, and ADAS sensor interfaces requiring stable component supply across automotive production lifecycles.
Supply support for CY8C27243-12PVXE 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
Cypress Semiconductor (now part of Infineon Technologies) designs programmable mixed-signal and digital ICs for automotive, industrial, and consumer applications, with focus on integration, configurability, and system-level optimization.
The CY8C27x43 family targets cost-sensitive automotive electronic control units needing single-chip analog/digital programmability, AEC-Q100 qualification, and field-upgradable firmware - bridging legacy ASIC and general-purpose MCU architectures.
FAQ
What development tools are required to program the CY8C27243-12PVXE?
PSoC Designer IDE (v5.4 or later) is mandatory for configuration and code generation; it provides graphical user module placement, automatic register setup, and C-language framework generation. Programming requires a MiniProg1 or MiniProg3 programmer/debugger connected via SWD; no external JTAG adapter is needed.
Does the CY8C27243-12PVXE support hardware-based functional safety features?
It includes built-in watchdog timer, power-on reset with brown-out detection, and configurable low-voltage detect interrupts - sufficient for ASIL-B diagnostic coverage in non-safety-critical functions. No hardware lockstep CPU or memory ECC is present; external safety monitors are required for ASIL-C/D systems.
Can analog and digital blocks operate simultaneously without interference?
Yes - global analog and digital interconnects are electrically isolated; analog blocks use dedicated reference and ground routing, while digital switching noise is suppressed via internal decoupling and programmable slew-rate control on GPIO outputs.
Is the 24 MHz internal oscillator accurate enough for UART communication?
At ±4% tolerance over voltage and temperature, the IMO supports UART baud rates up to 115.2 kbps with acceptable error margin (<2%) when using integer dividers; for higher accuracy (e.g., 1 Mbps CAN FD), the ECO+PLL path with 32.768 kHz crystal is recommended.
CY8C27243-12PVXE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 20-SSOP (0.209", 5.30mm Width)
- Series:
- PSOC™1 CY8C27xxx
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- M8C
- Core Size:
- 8-Bit
- Speed:
- 12MHz
- Connectivity:
- I2C, SPI, UART/USART
- Peripherals:
- POR, PWM, WDT
- Number of I/O:
- 16
- Program Memory Size:
- 16KB (16K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 256 x 8
- Voltage - Supply (Vcc/Vdd):
- 3V ~ 5.25V
- Data Converters:
- A/D 4x14b; D/A 4x9b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C27243-12PVXE FAQ
1.How can I place an order for CY8C27243-12PVXE through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C27243-12PVXE on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for CY8C27243-12PVXE reliable?
The price and inventory of CY8C27243-12PVXE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C27243-12PVXE is usually 5 days.
3.What payment methods are accepted for CY8C27243-12PVXE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C27243-12PVXE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C27243-12PVXE?
CY8C27243-12PVXE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C27243-12PVXE order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for CY8C27243-12PVXE?
For technical support, including CY8C27243-12PVXE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C27243-12PVXE requirements.
6.How does Aetrix verify that CY8C27243-12PVXE is sourced from the original manufacturer or authorized distributors?
All CY8C27243-12PVXE products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that CY8C27243-12PVXE meets industry standards.
7.What is the process for return or replacement of CY8C27243-12PVXE?
All CY8C27243-12PVXE units undergo pre-shipment inspection (PSI). If there is an issue with CY8C27243-12PVXE, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The CY8C27243-12PVXE part is unused and in its original packaging.
Return procedure for CY8C27243-12PVXE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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