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| Part Number | MKL03Z16VFK4 | MKL03Z16VFK4R | MKL04Z16VFK4 | MKL05Z16VFK4 | MKL02Z16VFK4 | MKL03Z16VFG4 | 
|---|---|---|---|---|---|---|
| Manufacturer | NXP USA Inc. | NXP USA Inc. | NXP USA Inc. | NXP USA Inc. | NXP USA Inc. | NXP USA Inc. | 
| Product Status | Active | Active | Active | Active | Active | Active | 
| Core Processor | ARM® Cortex®-M0+ | ARM® Cortex®-M0+ | ARM® Cortex®-M0+ | ARM® Cortex®-M0+ | ARM® Cortex®-M0+ | ARM® Cortex®-M0+ | 
| Core Size | 32-Bit Single-Core | 32-Bit Single-Core | 32-Bit Single-Core | 32-Bit Single-Core | 32-Bit Single-Core | 32-Bit Single-Core | 
| Speed | 48MHz | 48MHz | 48MHz | 48MHz | 48MHz | 48MHz | 
| Connectivity | I²C, SPI, UART/USART | I²C, SPI, UART/USART | I²C, SPI, UART/USART | I²C, SPI, UART/USART | I²C, SPI, UART/USART | I²C, SPI, UART/USART | 
| Peripherals | Brown-out Detect/Reset, LVD, POR, PWM, WDT | Brown-out Detect/Reset, LVD, POR, PWM, WDT | Brown-out Detect/Reset, DMA, LVD, POR, PWM, WDT | Brown-out Detect/Reset, DMA, LVD, POR, PWM, WDT | Brown-out Detect/Reset, LVD, POR, PWM, WDT | Brown-out Detect/Reset, LVD, POR, PWM, WDT | 
| Number of I/O | 22 | 22 | 22 | 22 | 22 | 14 | 
| Program Memory Size | 16KB (16K x 8) | 16KB (16K x 8) | 16KB (16K x 8) | 16KB (16K x 8) | 16KB (16K x 8) | 16KB (16K x 8) | 
| Program Memory Type | Flash | Flash | Flash | Flash | Flash | Flash | 
| EEPROM Size | - | - | - | - | - | - | 
| RAM Size | 2K x 8 | 2K x 8 | 2K x 8 | 2K x 8 | 2K x 8 | 2K x 8 | 
| Voltage - Supply (Vcc/Vdd) | 1.71V ~ 3.6V | 1.71V ~ 3.6V | 1.71V ~ 3.6V | 1.71V ~ 3.6V | 1.71V ~ 3.6V | 1.71V ~ 3.6V | 
| Data Converters | A/D 7x12b | A/D 7x12b | A/D 12x12b | A/D 12x12b; D/A 1x12b | A/D 12x12b | A/D 7x12b | 
| Oscillator Type | Internal | Internal | Internal | Internal | Internal | Internal | 
| Operating Temperature | -40°C ~ 105°C (TA) | -40°C ~ 105°C (TA) | -40°C ~ 105°C (TA) | -40°C ~ 105°C (TA) | -40°C ~ 105°C (TA) | -40°C ~ 105°C (TA) | 
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | 
| Package / Case | 24-VFQFN Exposed Pad | 24-VFQFN Exposed Pad | 24-VFQFN Exposed Pad | 24-VFQFN Exposed Pad | 24-VFQFN Exposed Pad | 16-UFQFN Exposed Pad | 
| Supplier Device Package | 24-QFN (4x4) | 24-QFN (4x4) | 24-QFN (4x4) | 24-QFN (4x4) | 24-QFN (4x4) | 16-QFN (3x3) |