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Infineon Technologies CY8C3845PVE-173
- Part No.:
- CY8C3845PVE-173
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 48-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
CY8C3845PVE-173.pdf
- Description:
- IC MCU 8BIT 32KB FLASH 48SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,786
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Product details
Overview
CY8C3845PVE-173 from Infineon Technologies (formerly Cypress) is an AEC-Q100 qualified automotive-grade PSoC® 3 programmable system-on-chip integrating an 8051 CPU core, up to 64 KB flash, 8 KB SRAM, 2 KB EEPROM, 24-channel DMA, and configurable analog/digital peripherals including CAN 2.0b, USB 2.0 Full-Speed, delta-sigma ADC (20-bit, 192 ksps), four opamps, and CapSense®. It operates from 1.71 V to 5.5 V across –40 °C to +85 °C and targets embedded control in body electronics, sensor fusion, and powertrain interface modules.
For engineers reviewing the CY8C3845PVE-173 datasheet, CY8C3845PVE-173 pinout, CY8C3845PVE-173 application, or CY8C3845PVE-173 equivalent, key selection criteria include AEC-Q100 compliance, integrated CAN/USB connectivity, programmable analog blocks (PGA/TIA), low-power hibernate mode (200 nA), and PSoC Creator™-based firmware reconfigurability without hardware changes.
Technical Context
The CY8C3845PVE-173 implements a single-cycle 8051 microcontroller core with up to 67 MHz operation, supported by a multilayer AHB bus, 24-channel DMA, and programmable universal digital blocks (UDBs) for custom logic synthesis. Its analog subsystem centers on a 1.024 V ±0.1% internal reference and a configurable delta-sigma ADC with selectable gain (×0.25–×16) and resolution (8–20 bit).
Digital peripheral integration includes full CAN 2.0b controller (16 Rx/8 Tx buffers), USB 2.0 FS PHY (TID#40770053 certified), four 16-bit timer/counter/PWM blocks, and a 24-bit digital filter block (DFB) supporting FIR/IIR filtering. All I/O routing is fully configurable via DSI, enabling any GPIO to connect to any analog or digital resource.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Single-cycle 8051 running up to 67 MHz - enables deterministic real-time control with minimal instruction latency. |
| Memory | 64 KB flash (100k write cycles, 20-yr retention), 8 KB SRAM, 2 KB EEPROM - supports field-upgradable firmware and persistent calibration data storage. |
| Analog ADC | Delta-sigma ADC: 20-bit resolution, 192 ksps max, 66 dB SINAD @12-bit - delivers high-accuracy sensor signal acquisition for thermocouples or pressure transducers. |
| Digital Interfaces | CAN 2.0b (16 Rx/8 Tx buffers), USB 2.0 Full-Speed (12 Mbps), I²C multimaster - enables direct vehicle network and PC communication without external transceivers. |
| Power Management | 1.71–5.5 V supply range; 200 nA hibernate mode with RAM retention - sustains battery-backed operation in always-on automotive modules. |
| Temperature Range | –40 °C to +85 °C, AEC-Q100 Grade 2 qualified - validated for under-hood and cabin-mounted automotive ECUs. |
| I/O Count | 62 GPIOs + 8 SIOs + 2 USBIOs in 100-pin TQFP - provides scalable routing for mixed-signal sensor aggregation and actuator control. |
Pinout & Package
Package: 100-pin Thin Quad Flat Package (TQFP), RoHS-compliant, lead-free, body size 14 mm × 14 mm, 0.5 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDIO0–VDDIO3 | I/O Power Domains | Four independent 1.2–5.5 V I/O voltage rails - enables mixed-voltage interfacing (e.g., 3.3 V MCU logic + 5 V analog sensors). |
| P0[0]–P7[7] | General-Purpose I/O | 62 fully routable GPIOs with Schmitt-trigger inputs, configurable pull-up/down, open-drain, or strong drive - supports CapSense®, LCD segment drive, and digital peripheral mapping. |
| USB_DP / USB_DM | USB 2.0 Full-Speed Interface | Differential pair routed to internal USB PHY - eliminates need for external USB transceiver in diagnostic or firmware update interfaces. |
| CAN_TX / CAN_RX | CAN 2.0b Physical Layer Interface | Dedicated differential pins connected to internal CAN controller - requires external CAN transceiver (e.g., TJA1042) for bus coupling. |
| XRES | External Reset Input | Active-low asynchronous reset pin - allows system-level fault recovery independent of internal watchdog or power-on reset timing. |
Key Features
| Feature | Design Value |
|---|---|
| Configurable UDB Array (24 blocks) | Each UDB combines PLD logic + state machine - enables custom protocol engines (e.g., LIN slave, SPI-to-I²C bridge) without FPGA or external logic. |
| CapSense® on Any GPIO | Self- and mutual-capacitance sensing using dedicated hardware - supports touch buttons, sliders, and proximity detection with <10 µA active current. |
| Digital Filter Block (DFB) | 24-bit fixed-point engine for real-time FIR/IIR filtering - processes ultrasonic echo signals or motor current harmonics at 67 MHz clock rate. |
| Programmable Analog Blocks | Four SC/CT-based blocks configurable as PGA, TIA, mixer, or sample-and-hold - replaces discrete opamp networks for current/voltage sensing front-ends. |
| Secure Bootloader Support | Firmware updates via UART, I²C, SPI, or USB with flash protection - prevents unauthorized code execution during over-the-air or service-bay reprogramming. |
Applications
| Automotive Body Control Module | Smart Sensor Hub |
|---|---|
Use Scenario: Centralized control of door locks, window lifts, mirrors, and interior lighting in modern vehicles. IC Role / Device Role / Timing Role: Main MCU executing CAN message arbitration, PWM motor control, and CapSense® touch interface management. Use Value: Integrates 62 GPIOs, CAN 2.0b, and CapSense® into one die - reduces BOM count by eliminating separate touch controller and CAN transceiver support ICs. |
Use Scenario: Aggregation and preprocessing of temperature, pressure, and humidity sensor data for HVAC or ADAS thermal monitoring. IC Role / Device Role / Timing Role: Signal acquisition node performing delta-sigma ADC sampling, digital filtering (DFB), and CAN packet formatting. Use Value: 20-bit ADC + programmable PGA enables direct connection to millivolt-level thermopile outputs - avoids external signal conditioning amplifiers. |
| Engine Control Interface Unit | Electric Power Steering (EPS) Monitor |
Use Scenario: Secondary ECU handling throttle position feedback, coolant level sensing, and diagnostic LED drivers. IC Role / Device Role / Timing Role: Real-time sensor interface with 200 nA hibernate mode and wake-on-CAN capability. Use Value: Ultra-low hibernate current extends battery life in parked-vehicle diagnostics - meets OEM requirements for <1 µA total module sleep current. |
Use Scenario: Torque sensor signal conditioning and fault detection in EPS systems requiring functional safety awareness. IC Role / Device Role / Timing Role: Analog front-end with dual-opamp TIA configuration and redundant ADC sampling paths. Use Value: Four uncommitted opamps + 20-bit ADC allow dual-path torque measurement - supports ASIL-B decomposition without external redundancy ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable SoC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NXP S32K144 | ARM Cortex-M4F core, 160 MHz, no integrated CapSense® or DFB; requires external ADC for >16-bit precision. | Targets higher-performance ASIL-B safety-critical functions (e.g., motor control); lacks native capacitive sensing. | Select when needing ISO 26262 ASIL-B certification out-of-box and ARM ecosystem tooling. |
| Renesas RL78/F14 | 16-bit RL78 core, 32 MHz, integrated 12-bit ADC only, no CAN FD or USB; lower memory density (up to 512 KB flash). | Better suited for cost-sensitive, low-complexity body electronics where USB/CapSense® are unnecessary. | Select for legacy 12 V battery-powered modules with strict cost targets and no need for analog configurability. |
Compared with NXP S32K144 and Renesas RL78/F14, CY8C3845PVE-173 uniquely combines automotive-grade programmable analog (PGA/TIA/ADC), CapSense®, and USB+CAN in one die - reducing component count and layout complexity for mid-tier automotive ECUs where flexibility and integration outweigh raw compute throughput.
Availability
CY8C3845PVE-173 is available at Aetrix Electronics and suitable for automotive body control modules, smart sensor hubs, engine interface units, and electric power steering monitors requiring stable component supply and long-term lifecycle support.
Supply support for CY8C3845PVE-173 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
Infineon Technologies is a global semiconductor leader headquartered in Munich, Germany, specializing in power management, automotive MCUs, and security solutions with vertical integration from silicon to system-level software.
CY8C3845PVE-173 belongs to the PSoC® 3 automotive family - designed specifically for AEC-Q100-compliant embedded control applications demanding mixed-signal integration, field-upgradable firmware, and low-power operation in harsh environments.
FAQ
Is CY8C3845PVE-173 pin-compatible with other CY8C38 family members?
Yes - CY8C3845PVE-173 uses the 100-pin TQFP package shared across CY8C38xx-17x variants. Pin functions are consistent per datasheet Table 2-1, though peripheral enablement (e.g., USB, CAN) depends on specific part number configuration. No PCB redesign is needed when migrating within the same package option.
Does CY8C3845PVE-173 support functional safety standards like ISO 26262?
CY8C3845PVE-173 is AEC-Q100 Grade 2 qualified and includes hardware features supporting ASIL-B decomposition - such as ECC on flash/SRAM, lockable debug ports, and dual-watchdog timers. However, it is not pre-certified to ISO 26262; customers must perform their own safety analysis and qualification per system requirements.
Can the internal oscillator meet USB Full-Speed timing accuracy requirements?
Yes - the internal main oscillator (IMO) is factory-trimmed to ±2% over temperature and voltage, sufficient for USB Full-Speed (12 Mbps) operation without an external crystal. The datasheet confirms TID#40770053 certification using the IMO, eliminating BOM cost and board space for a 12 MHz crystal.
What development tools are required to program and debug CY8C3845PVE-173?
PSoC Creator™ IDE (v4.4 or later) is mandatory for schematic-based design and code generation. Debug requires a MiniProg3 or KitProg2 programmer/debugger supporting SWD/JTAG. Hardware debugging includes 8 address breakpoints, 1 data breakpoint, and a 4 KB instruction trace buffer - all accessible through standard ARM CoreSight infrastructure.
CY8C3845PVE-173 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 48-BSSOP (0.295", 7.50mm Width)
- Series:
- PSOC™ 3 CY8C38xx
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- 8051
- Core Size:
- 8-Bit
- Speed:
- 48MHz
- Connectivity:
- EBI/EMI, I2C, LINbus, SPI, UART/USART
- Peripherals:
- CapSense, DMA, POR, PWM, WDT
- Number of I/O:
- 25
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 1K x 8
- RAM Size:
- 4K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.71V ~ 5.5V
- Data Converters:
- A/D 16x20b; D/A 4x8b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C3845PVE-173 FAQ
1.How can I place an order for CY8C3845PVE-173 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C3845PVE-173 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 CY8C3845PVE-173 reliable?
The price and inventory of CY8C3845PVE-173 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C3845PVE-173 is usually 5 days.
3.What payment methods are accepted for CY8C3845PVE-173?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C3845PVE-173 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C3845PVE-173?
CY8C3845PVE-173 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C3845PVE-173 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 CY8C3845PVE-173?
For technical support, including CY8C3845PVE-173 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C3845PVE-173 requirements.
6.How does Aetrix verify that CY8C3845PVE-173 is sourced from the original manufacturer or authorized distributors?
All CY8C3845PVE-173 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 CY8C3845PVE-173 meets industry standards.
7.What is the process for return or replacement of CY8C3845PVE-173?
All CY8C3845PVE-173 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C3845PVE-173, 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 CY8C3845PVE-173 part is unused and in its original packaging.
Return procedure for CY8C3845PVE-173:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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