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Infineon Technologies CY8C3245AXI-158 — Discrete Semiconductors
Infineon Technologies

CY8C3245AXI-158 PSoC 3 MCU, 8-bit 8051, 50 MHz, 32 KB Flash

MPNCY8C3245AXI-158
End of Life

Infineon PSoC® 3 CY8C32xx, CY8C3245AXI-158, 8-Bit 8051 MCU, 50MHz, 32KB (32K x 8) FLASH, 4K x 8 RAM, 1K x 8 EEPROM, 100-LQFP, -40°C ~ 85°C.

$9.98Ref. price · indicative, final on quote
CY8C3245AXI-158 datasheet
Packaging100-LQFP
StockContact for availability
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Specifications

CY8C3245AXI-158 Technical Specifications
ParameterValue
SeriesPSOC® 3 CY8C32xx
Mounting typeSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))1.71V ~ 5.5V
Operating temperature-40°C ~ 85°C (TA)
Speed50MHz
PackageTray
RAM size4K x 8
Core size8-Bit
EEPROM size1K x 8
PeripheralsCapSense, DMA, POR, PWM, WDT
ConnectivityEBI/EMI, I²C, LINbus, SPI, UART/USART
Number of i (O)62
Core processor8051
Case100-LQFP
Data convertersA/D 16x12b; D/A 1x8b
Program memory size32KB (32K x 8)

Product details

50 MHz 8051 — how fast is fast enough

The 50 MHz clock rate on this 8051 core is enough for most real-time control loops and CapSense scanning at typical panel-scan rates.

Integrated analog — one chip does the front-end

The 16-channel 12-bit ADC and the single 8-bit DAC mean this part can handle the analog interface for temperature sensors, potentiometers, or simple signal conditioning without an external converter. For a touch-panel HMI, the CapSense peripheral handles capacitive sensing directly, and the DMA engine can move ADC results to memory without loading the CPU. This integration is the main reason to pick a PSoC 3 over a plain 8051 — it collapses the analog and digital BOM into one package.

Lifecycle and sourcing

The ROHS3 compliance is confirmed. If you are freezing a BOM for a new design, this is a safe line item with no imminent obsolescence risk.

Frequently asked questions

Is CY8C3245AXI-158 lead-free and ROHS compliant?

Yes, the part is ROHS3 compliant, which covers the EU ROHS directive including the latest exemptions. The finish is lead-free, suitable for ROHS-compliant assembly lines.

What development tools are compatible with CY8C3245AXI-158?

Cypress's PSoC Creator IDE (now part of Infineon's ModusToolbox ecosystem) supports the PSoC 3 family. The 8051 core is programmed and debugged via the SWD (Serial Wire Debug) interface, typically using a MiniProg3 or similar programmer. The internal oscillator means no external crystal is required for basic operation.

Can CY8C3245AXI-158 replace CY8C3245AXI-147?

The CY8C3245AXI-147 and CY8C3245AXI-158 share the same PSoC 3 family and 100-pin LQFP package, but the suffix difference usually indicates a variant in Flash/RAM size or speed grade. Without the -147 datasheet in hand, verify the program memory size and supply voltage range match your firmware image. The pinout is identical across the 100-pin PSoC 3 devices, so a board swap is possible if the memory and peripheral set align.