We use cookies for optimal website use. We recommend you to allow cookies for a better user experience. Please read our privacy policy. Learn more.
In observance of New Year’s Day on January 1, we will be closed for one day. Thank you for your continued support.
Due to year-end inventory procedures, orders placed after 17:00 on December 25 will be processed sequentially starting January 2, 2026.
Description
The HT66F019 is an A/D type 8-bit MCU with Holtek’s high-performance RISC architecture core. It embeds 8Kx16 bits Flash Program Memory, 256 bytes SRAM Data Memory, 64 bytes EEPROM Data Memory, an internal comparator, an internal 12-bit high-speed ADC as well as 18 I/O pins which can drive LED directly. The integrated SPI, I2C, and UART functions provide communication interfaces with external devices.
NOTE
| Select | Quantity | Discount | Unit price |
| 1-9 | - | US$3.33 | |
| 10-99 | 15% | US$2.83 | |
| 100-499 | 25% | US$2.50 | |
| 500-999 | 35% | US$2.16 | |
| 1000-4999 | 40% | US$2.00 | |
| 5000+ | 42% | US$1.93 |
Features
| Part Number | HT66F019 | HT66F0195 |
|---|---|---|
| Internal Clock | 8MHz, 12MHz, 16MHz | 8MHz, 12MHz, 16MHz |
| Operating Voltage | 2.2V – 5.5V | 2.2V – 5.5V |
| System Clock | 400kHz - 16MHz or 32kHz | 400kHz - 16MHz or 32kHz |
| Program Memory (Flash) | 8K x 16 | 8K x 16 |
| Data Memory (SRAM) | 256 x 8 | 512 x 8 |
| Data EEPROM | 64 x 8 | 128 x 8 |
| I/O | Up to 18 | Up to 26 |
| RTC | √ | √ |
| ADC | 12-bit x 8 | 12-bit x 12 |
| Timer Module | 10-bit PTM x 1; 16-bit CTM x 1; 16-bit STM x 1 | 10-bit PTM x 1; 16-bit CTM x 1; 16-bit STM x 1 |
| Comparator | 1 | 1 |
| SCOM/SSEG | - | SCOMx6; SSEGx18 |
| High Current LED Driver | 18 | 26 |
| Interface | SPI/I2C x 1; UART x 1 | SPI/I2C x 1; UART x 1 |
| Stack | 8 | 8 |
| Package | 20NSOP | 24SOP/SSOP, 28SOP/SSOP |
| Operating Temperature | -40°C to +85°C | -40°C to +85°C |
| Packing media | tube | tube |
Development Tool
Resources
MCU: Holtek HT66F019, (including datasheet, software library, example code, etc.)
| HS Code (reference) | 8542.31.00.00-2 |
|---|