8-bit CISC Microcontroller (MCU) featuring an 8051 core, operating at up to 24 MHz. This device offers 12KB of Flash program memory and 256 bytes of RAM. It includes 3 timers and supports SPI and UART interfaces. The 44-pin TQFP package is designed for surface mounting with a 0.8mm pin pitch. Operates from 3.3V to 5V with a maximum supply voltage of 5.5V.
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| Basic Package Type | Lead-Frame SMT |
| Package Family Name | QFP |
| Package/Case | TQFP |
| Package Description | Thin Quad Flat Package |
| Lead Shape | Gull-wing |
| Pin Count | 44 |
| PCB | 44 |
| Package Length (mm) | 10.1(Max) |
| Package Width (mm) | 10.1(Max) |
| Package Height (mm) | 1.05(Max) |
| Seated Plane Height (mm) | 1.2(Max) |
| Pin Pitch (mm) | 0.8 |
| Package Material | Plastic |
| Mounting | Surface Mount |
| Jedec | MS-026ACB |
| Family Name | AT89 |
| Data Bus Width | 8bit |
| Instruction Set Architecture | CISC |
| Maximum Clock Rate | 24MHz |
| Maximum CPU Frequency | 24MHz |
| Device Core | 8051 |
| Program Memory Type | Flash |
| Program Memory Size | 12KB |
| RAM Size | 256B |
| Number of Programmable I/Os | 32 |
| Core Architecture | 8051 |
| Programmability | Yes |
| Number of Timers | 3 |
| Interface Type | SPI/UART |
| CAN | 0 |
| I2C | 0 |
| SPI | 1 |
| Ethernet | 0 |
| UART | 1 |
| USART | 0 |
| USB | 0 |
| I2S | 0 |
| Max Operating Supply Voltage | 5.5V |
| Min Operating Temperature | 0°C |
| Max Operating Temperature | 70°C |
| Cage Code | 60991 |
| EU RoHS | No |
| HTS Code | 8542310001 |
| Schedule B | 8542310000 |
| ECCN | EAR99 |
| Automotive | No |
| AEC Qualified | No |
| PPAP | No |
| Radiation Hardening | No |
| RoHS Versions | 2011/65/EU, 2015/863 |
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