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| PartNumber | STM8S903K3T3C | STM8S903K3T3CTR | STM8S903K3T6 |
| Description | 8-bit Microcontrollers - MCU 8 BITS MICROCONTR | 8-bit Microcontrollers - MCU Mainstream Application specific line 8-bit MCU with 8 Kbytes Flash, 16 MHz CPU, integrated EEPROM | |
| Manufacturer | STMicroelectronics | STMicroelectronics | ST |
| Product Category | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU | Embedded - Microcontrollers |
| RoHS | Y | - | - |
| Mounting Style | SMD/SMT | - | SMD/SMT |
| Series | STM8S903K3 | STM8S903K3 | STM8S |
| Core | STM8 | - | STM8 |
| Data Bus Width | 8 bit | - | 8 bit |
| Maximum Clock Frequency | 16 MHz | - | 16 MHz |
| Data RAM Size | 2 kB | - | 1 kB |
| ADC Resolution | 12 bit | - | 10 bit |
| Operating Supply Voltage | 1.8 V to 3.6 V | - | 2.95 V to 5.5 V |
| Minimum Operating Temperature | - 40 C | - | - 40 C |
| Maximum Operating Temperature | + 85 C | - | + 85 C |
| Product | MCU | - | - |
| Program Memory Type | Flash | - | FLASH |
| Brand | STMicroelectronics | STMicroelectronics | - |
| Interface Type | I2C, SPI, UART | - | I2C SPI UART |
| Analog Supply Voltage | 1.8 V to 3.6 V | - | - |
| DAC Resolution | 12 bit | - | - |
| Moisture Sensitive | Yes | - | - |
| Number of Timers/Counters | 2 x 16 bit | - | - |
| Processor Series | STM8 | - | STM8S90x |
| Product Type | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU | - |
| Factory Pack Quantity | 1500 | 2400 | - |
| Subcategory | Microcontrollers - MCU | Microcontrollers - MCU | - |
| Supply Voltage Max | 3.6 V | - | - |
| Supply Voltage Min | 1.8 V | - | - |
| Watchdog Timers | Watchdog Timer | - | - |
| Unit Weight | 0.091712 oz | - | 0.027302 oz |
| Package / Case | - | LQFP-32 | - |
| Packaging | - | - | Tray |
| Package Case | - | - | LQFP-32 |
| Operating Temperature | - | - | -40°C ~ 85°C (TA) |
| Supplier Device Package | - | - | * |
| Number of I O | - | - | 28 |
| Speed | - | - | 16MHz |
| EEPROM Size | - | - | 640 x 8 |
| Core Processor | - | - | STM8 |
| RAM Size | - | - | 1K x 8 |
| Peripherals | - | - | Brown-out Detect/Reset, POR, PWM, WDT |
| Connectivity | - | - | I2C, IrDA, LIN, SPI, UART/USART |
| Voltage Supply Vcc Vdd | - | - | 2.95 V ~ 5.5 V |
| Core Size | - | - | 8-Bit |
| Program Memory Size | - | - | 8KB (8K x 8) |
| Data Converters | - | - | A/D 7x10b |
| Oscillator Type | - | - | Internal |
| Supply Voltage Max | - | - | 5.5 V |
| Supply Voltage Min | - | - | 2.95 V |
| Number of ADC Channels | - | - | 7 |
| Number of I Os | - | - | 28 I/O |
| Data ROM Size | - | - | 640 B |
| Number of Timers Counters | - | - | 7 Timer |
| Data RAM Type | - | - | RAM |
| Data ROM Type | - | - | EEPROM |