CY8C4A45AZI-483ES - PSoC 4 Analog Coprocessor, 48MHz, 32KB Flash | Infineon
MPN: CY8C4A45AZI-483ES ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $7.2 | $7.20 |
| 10 | $6.45 | $64.50 |
| 100 | $5.72 | $572.00 |
| 500 | $5.1 | $2,550.00 |
| 1,000 | $4.55 | $4,550.00 |
CY8C4A45AZI-483ES Overview
A PSoC Analog Coprocessor is a mixed-signal programmable system-on-chip that sits between a host MCU and real-world sensors. It belongs to the broader hierarchy: microcontroller -> embedded processor -> programmable system-on-chip -> semiconductor. Compared to a fixed-function analog front-end IC, the PSoC Analog Coprocessor allows designers to configure op-amps, ADCs, DACs, filters, and CapSense channels using on-chip UDBs (Universal Digital Blocks) and programmable analog blocks, shortening the BOM and accelerating design iteration.
Key features include 32 KB flash, 4 KB SRAM, one 12-bit SAR ADC, up to two op-amps, two 12-bit DACs, CapSense touch sensing, two SCBs (Serial Communication Blocks) configurable as I2C/SPI/UART, and a wide operating voltage range. The 48 MHz Cortex-M0+ core delivers 0.95 DMIPS/MHz and supports the Cortex-M0+ instruction set, providing efficient interrupt handling for real-time sensor data.
The architecture combines a Cortex-M0+ CPU subsystem with programmable analog blocks, UDBs for digital logic, and dedicated peripherals. The PSoC Creator IDE supports schematic-based design entry for analog routing, and the device is supported by Infineon's ModusToolbox ecosystem for modern development workflows.
Typical applications include sensor signal conditioning in IoT endpoints, CapSense touch interfaces for HMI, industrial sensor hubs, smart home devices, and low-power wireless sensor nodes paired with an external host MCU. The wide operating voltage range supports both 3.3V and 5V system designs.
When designing with this device, ensure that the host MCU communicates with the coprocessor over I2C or SPI using the standard SCB blocks. The Cypress/Infineon PSoC Creator or ModusToolbox toolchain generates the API for all programmable analog blocks.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes for the CY8C4A45AZI-483ES that are not found in the manufacturer datasheet alone.
Drop-in alternatives for CY8C4A45AZI-483ES — 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 CY8C4A45AZI-483ES (same form factor and footprint) — differing in ADC, Package, Operating Temperature Range, SRAM, TCPWM Blocks.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
CY8C4A45AZI-483
✅ Drop-In📋 Reference alternative (not in catalog)
CY8C4247AZI-M485
✅ Drop-In✓ In Stock
$4.61 / Unit
View Datasheet →CY8C4247AZI-L423T
✅ Drop-In✓ In Stock
$2.42 / Unit
View Datasheet →CY8C4246AZI-M445
✅ Drop-In✓ In Stock
$2.52 / Unit
View Datasheet →CY8C4124PVI-432T
✅ Drop-In✓ In Stock
$2.15 / Unit
View Datasheet →CY8C4A45AZI-483ES Maximum Ratings & Electrical Characteristics
| Core | ARM Cortex-M0+ |
| Core Width | 32-bit |
| Maximum Clock Frequency | 48 MHz |
| Program Memory (Flash) | 32 KB (32K x 8) |
| RAM Size | 4 KB |
| Operating Temperature Range | -40C to +85C (industrial) |
| Package | 48-TQFP (7x7 mm) |
| Mounting Type | Surface Mount |
| ADC | 1 x 12-bit SAR ADC |
| DAC | 2 x 12-bit DAC |
| Op-Amps | Up to 2 |
| CapSense | Yes (CapSense touch sensing) |
| Serial Communication Blocks (SCB) | 2 (configurable as I2C/SPI/UART) |
| RoHS Status | Compliant |
| MSL Level | 3 |
CY8C4A45AZI-483ES Pin Configuration
| Pin 1 | P0.0 — GPIO / analog input |
| Pin 2 | P0.1 — GPIO / analog input |
| Pin 3 | P0.2 — GPIO / analog input |
| Pin 4 | P0.3 — GPIO / analog input |
| Pin 5 | P0.4 — GPIO / analog input |
| Pin 6 | P0.5 — GPIO / analog input |
| Pin 7 | P0.6 — GPIO / analog input |
| Pin 8 | P0.7 — GPIO / analog input |
| Pin 9 | VDD — Power supply |
| Pin 10 | VSS — Ground |
| Pin 11 | P1.0 — GPIO |
| Pin 12 | P1.1 — GPIO |
| Pin 13 | P1.2 — GPIO |
| Pin 14 | P1.3 — GPIO |
| Pin 15 | P1.4 — GPIO |
| Pin 16 | P1.5 — GPIO |
| Pin 17 | P1.6 — GPIO |
| Pin 18 | P1.7 — GPIO |
| Pin 19 | P2.0 — GPIO |
| Pin 20 | P2.1 — GPIO |
| Pin 21 | P2.2 — GPIO |
| Pin 22 | P2.3 — GPIO |
| Pin 23 | P2.4 — GPIO |
| Pin 24 | P2.5 — GPIO |
| Pin 25 | P2.6 — GPIO |
| Pin 26 | P2.7 — GPIO |
| Pin 27 | P3.0 — GPIO |
| Pin 28 | P3.1 — GPIO |
| Pin 29 | P3.2 — GPIO |
| Pin 30 | P3.3 — GPIO |
| Pin 31 | P3.4 — GPIO |
| Pin 32 | P3.5 — GPIO |
| Pin 33 | P3.6 — GPIO |
| Pin 34 | P3.7 — GPIO |
| Pin 35 | P4.0 — GPIO |
| Pin 36 | P4.1 — GPIO |
| Pin 37 | P4.2 — GPIO |
| Pin 38 | P4.3 — GPIO |
| Pin 39 | P5.0 — GPIO |
| Pin 40 | P5.1 — GPIO |
| Pin 41 | P5.2 — GPIO |
| Pin 42 | P5.3 — GPIO |
| Pin 43 | XRES — External reset (active low) |
| Pin 44 | SWDIO — SWD data |
| Pin 45 | SWCLK — SWD clock |
| Pin 46 | VDDIO — I/O supply voltage |
| Pin 47 | VDD — Power supply |
| Pin 48 | VSS — Ground |
Typical Applications
CY8C4A45AZI-483ES is suitable for 6 applications: IoT Sensor Signal Conditioning, CapSense Touch HMI, Industrial Sensor Hub, Smart Home Appliance Control, Motor Control Feedback Conditioning, Low-Power Wireless Sensor Node.
IoT Sensor Signal Conditioning
The CY8C4A45AZI-483ES fits IoT sensor signal conditioning by acting as an analog coprocessor between sensors and a host MCU. Its 48 MHz Cortex-M0+ core, 12-bit SAR ADC, two on-chip op-amps, and 12-bit DACs allow programmable gain, filtering, and linearization of bridge sensors, thermocouples, and current shunts. Per Infineon application notes, the device reduces host MCU load by pre-processing analog signals over I2C/SPI, extending battery life in wireless sensor nodes.
Recommended
CapSense Touch HMI
The CY8C4A45AZI-483ES is well suited for CapSense touch HMI replacements of mechanical switches and keypads. Its CapSense block supports buttons, sliders, proximity sensors, and guard sensors with configurable sensitivity. The 32 KB flash holds CapSense firmware plus customer UI logic, while the 48 MHz Cortex-M0+ core handles gesture recognition. Designers can implement waterproof touch panels for appliances and industrial controls per the Infineon CapSense design guide.
Recommended
Industrial Sensor Hub
The CY8C4A45AZI-483ES fits industrial sensor hubs that aggregate multiple analog inputs into a single I2C/SPI data stream to a host controller. Its two SCB blocks support independent I2C/SPI/UART channels for parallel sensor reads, while the on-chip op-amps and 12-bit ADC provide signal conditioning for 4-20 mA loops and RTD sensors. The 48-TQFP (7x7 mm) package is footprint-compatible across the CY8C4Axx family for design reuse.
Recommended
Smart Home Appliance Control
The CY8C4A45AZI-483ES is ideal for smart home appliance control panels combining capacitive touch, temperature sensing, and LED driver PWM. The two 12-bit DACs and op-amps can drive 4-20 mA loops for HVAC valves, while the CapSense block handles the user interface. The 48 MHz Cortex-M0+ core runs Modbus or BLE-host command parsing, and the -40C to +85C industrial temperature range supports appliance environments per Infineon qualification data.
Recommended
Motor Control Feedback Conditioning
The CY8C4A45AZI-483ES fits motor control feedback conditioning by amplifying Hall sensor and shunt resistor signals with its on-chip op-amps before ADC sampling. Its 12-bit SAR ADC and 48 MHz core can run FIR filters to smooth encoder feedback and report position over SPI to a motor controller. The programmable analog routing lets designers swap gain stages via firmware rather than PCB rework per Infineon application brief.
Recommended
Low-Power Wireless Sensor Node
The CY8C4A45AZI-483ES fits low-power wireless sensor nodes as a companion MCU to radios such as sub-GHz transceivers. Its Cortex-M0+ core handles sensor reads and buffer management while a host radio MCU handles the wireless stack. The two SCB blocks provide independent SPI for the radio and I2C for sensors. Designers benefit from CapSense wake-up and programmable analog blocks for adaptive sampling rates per Infineon low-power design guide.
Recommended
Recommended Products Summary
Engineering reference data for CY8C4A45AZI-483ES — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | CY8C4A45AZI-483 | CY8C4247AZI-M485 | CY8C4247AZI-L423T | CY8C4246AZI-M445 | CY8C4124PVI-432T |
|---|---|---|---|---|---|---|
| Brand | Infineon | Infineon | Infineon | Infineon | Infineon | Infineon |
| Package | 48-TQFP (7x7 mm) | 48-TQFP (7x7 mm) - same | 48-TQFP (7x7 mm) - same | 48-TQFP (7x7 mm) - same | 48-TQFP (7x7 mm) - same | 48-TQFP (7x7 mm) - same |
| Core | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ |
| Max Clock Frequency | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 24 MHz (-50%) |
| Flash | 32 KB | 32 KB | 64 KB (+100%) | 64 KB (+100%) | 64 KB (+100%) | 16 KB (-50%) |
| SRAM | 4 KB | 4 KB | 8 KB (+100%) | 8 KB (+100%) | 8 KB (+100%) | 4 KB |
| CapSense | Yes | Yes | Yes | Yes (low-power) | Yes | Yes (limited channels) |
| Ordering Code Type | Engineering Sample (ES) | Production | Production | Production (tape & reel) | Production | Production (tape & reel) |
Key Differentiators
- Engineering sample ordering code within the same die (vs CY8C4A45AZI-483)
- PSoC 4AL Analog Coprocessor architecture (vs CY8C4124PVI-432T)
- 48 MHz Cortex-M0+ core for real-time conditioning (vs CY8C4124PVI-432T)
Design Notes
The CY8C4A45AZI-483ES operates across a wide supply range (typical 1.71V-5.5V for the CY8C4Axx family per Infineon TRM). Place a 1uF decoupling capacitor close to the VDD pin and a 0.1uF capacitor on VDDIO to suppress digital switching noise that could couple into the analog blocks. Use separate analog and digital ground returns joined at a single point to avoid ground loops in CapSense applications.
For CapSense designs, route CapSense traces as short as possible and surround them with a hatched ground pour to act as a shield. The 48-TQFP (7x7 mm) package leaves sufficient board area for CapSense ITO or PCB button pads directly adjacent to the GPIO pins. Avoid routing digital signals under CapSense electrodes to prevent capacitive coupling per Infineon CapSense hardware design guidelines.
Do not program the SWD pins (SWDIO/SWCLK) as GPIO in production firmware without first enabling the SWD-disable sequence, otherwise the device becomes bricked and unrecoverable without a debugger. The XRES pin must be pulled high via an external 10k resistor; leaving it floating can cause spurious resets in noisy environments. Ensure the SWD interface is correctly connected before sealing the production image.
Place the 32.768 kHz watch crystal (if used for RTC) within 5 mm of the XTAL pins and guard the traces with a ground pour to minimize stray capacitance. The internal IMO at 48 MHz is sufficient for most sensor-conditioning workloads, but if USB or CAN FD timing is required, an external crystal and the PSoC Creator clock configuration wizard should be used per Infineon AN2029.
Compliance Information
RoHS and REACH compliance per Infineon product page. ES (engineering sample) suffix does not affect compliance status. Not AEC-Q100 qualified; choose CY8C4246AZI-M445 for automotive applications.
