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| PartNumber | CY8C4128LQI-BL543 | CY8C4128LQI-BL553 | CY8C4128LQI-BL543T |
| Description | RF Microcontrollers - MCU PSoC4 | RF Microcontrollers - MCU PSoC4 | RF Microcontrollers - MCU CY8C4128LQI-BL543T |
| Manufacturer | Cypress Semiconductor | Cypress Semiconductor | Cypress Semiconductor |
| Product Category | RF Microcontrollers - MCU | RF Microcontrollers - MCU | RF Microcontrollers - MCU |
| RoHS | Y | Y | Y |
| Core | ARM Cortex M0 | - | - |
| Operating Frequency | 2.4 GHz | - | - |
| Data Bus Width | 32 bit | - | - |
| Program Memory Size | 256 kB | - | - |
| Data RAM Size | 32 kB | - | - |
| Maximum Clock Frequency | 24 MHz | - | - |
| ADC Resolution | 12 bit | - | - |
| Operating Supply Voltage | 1.71 V to 5.5 V | - | - |
| Package / Case | QFN-56 | - | - |
| Mounting Style | SMD/SMT | - | - |
| Packaging | Tray | Tray | Reel |
| Output Power | - 18 dBm to + 3 dBm | - | - |
| Program Memory Type | Flash | - | - |
| Series | CY8C4128 | CY8C4128 | CY8C4128 |
| Brand | Cypress Semiconductor | Cypress Semiconductor | Cypress Semiconductor |
| Data RAM Type | SRAM | - | - |
| Interface Type | I2C/SPI/UART | - | - |
| Number of I/Os | 36 I/O | - | - |
| Moisture Sensitive | Yes | Yes | Yes |
| Number of ADC Channels | 24 Channel | - | - |
| Number of Timers | 4 x 16 bit | - | - |
| Product Type | RF Microcontrollers - MCU | RF Microcontrollers - MCU | RF Microcontrollers - MCU |
| Factory Pack Quantity | 260 | 260 | 2000 |
| Subcategory | Wireless & RF Integrated Circuits | Wireless & RF Integrated Circuits | Wireless & RF Integrated Circuits |
| Tradename | PSoC 4 | PSoC 4 | PSoC 4 |
| Unit Weight | 0.003343 oz | - | - |