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| PartNumber | CY8C4127LQI-BL453 | CY8C4127LQI-BL473 | CY8C4127LQI-BL453T |
| Description | RF Microcontrollers - MCU PSoC 4 BLE CY8C41x | RF Microcontrollers - MCU PSoC 4 BLE CY8C41x | RF Microcontrollers - MCU PSoC4 |
| Manufacturer | Microchip | NXP | Cypress Semiconductor |
| Product Category | RF Microcontrollers - MCU | RF Microcontrollers - MCU | RF Microcontrollers - MCU |
| RoHS | Y | Y | Y |
| Core | ARM Cortex M0+ | ARM Cortex M0+ | ARM Cortex M0 |
| Data Bus Width | 32 bit | 32 bit | 32 bit |
| Program Memory Size | 128 kB | 160 kB | 128 kB |
| Data RAM Size | 16 kB | 20 kB | 16 kB |
| Maximum Clock Frequency | 48 MHz | 2.4835 GHz | 24 MHz |
| ADC Resolution | 12 bit | 16 bit | 12 bit |
| Operating Supply Voltage | 3.3 V | 2.7 V | 1.71 V to 5.5 V |
| Maximum Operating Temperature | + 125 C | + 85 C | + 105 C |
| Package / Case | QFN-48 | QFN-32 | QFN-56 |
| Mounting Style | SMD/SMT | SMD/SMT | SMD/SMT |
| Packaging | Tray | Tray | Reel |
| Program Memory Type | Flash | Flash | Flash |
| Series | ATSAMR21 | - | CY8C4127 |
| Brand | Microchip Technology / Atmel | NXP / Freescale | Cypress Semiconductor |
| Data RAM Type | SRAM | SRAM | SRAM |
| Interface Type | SPI, UART, USB | I2C, SPI, UART | I2C, SPI, UART |
| Number of I/Os | 28 I/O | 15 I/O | 36 I/O |
| Minimum Operating Temperature | - 40 C | - 40 C | - 40 C |
| Moisture Sensitive | Yes | Yes | - |
| Number of ADC Channels | 8 Channel | - | - |
| Processor Series | SAMR21G | - | - |
| Product Type | RF Microcontrollers - MCU | RF Microcontrollers - MCU | RF Microcontrollers - MCU |
| Factory Pack Quantity | 416 | 490 | 2000 |
| Subcategory | Wireless & RF Integrated Circuits | Wireless & RF Integrated Circuits | Wireless & RF Integrated Circuits |
| Tradename | SMART | - | PSoC 4 |
| Unit Weight | 0.005309 oz | 0.001654 oz | - |
| Operating Frequency | - | 48 MHz | 2.4 GHz |
| NF Noise Figure | - | 6.5 dB | - |
| Number of Timers | - | 3 Timer | 4 |
| Supply Voltage Max | - | 3.6 V | - |
| Supply Voltage Min | - | 1.71 V | - |
| Part # Aliases | - | 935312095557 | - |
| Output Power | - | - | - 18 dBm to + 3 dBm |