8-bit microcontroller (MCU) featuring 4KB FLASH memory and 128B RAM. Operates at up to 12MHz with an 8051 core architecture and an 8-bit data bus. Includes UART/USART interface, 15 programmable I/Os, and two timers/counters. Packaged in a 20-pin PDIP for through-hole mounting, with an operating temperature range of -40°C to 85°C and a supply voltage of 2.7V to 6V.
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Microchip AT89C4051-12PU technical specifications.
| Package/Case | PDIP |
| Core Architecture | 8051 |
| Data Bus Width | 8b |
| Frequency | 12MHz |
| Height | 4.963mm |
| Interface | UART, USART |
| Lead Free | Lead Free |
| Length | 26.92mm |
| Max Frequency | 12MHz |
| Max Operating Temperature | 85°C |
| Min Operating Temperature | -40°C |
| Max Supply Voltage | 6V |
| Memory Size | 4KB |
| Memory Type | FLASH, |
| Min Supply Voltage | 2.7V |
| Mount | Through Hole |
| Number of I/Os | 15 |
| Number of Programmable I/O | 15 |
| Number of Timers/Counters | 2 |
| Number of UART Channels | 1 |
| Oscillator Type | Internal |
| Package Quantity | 18 |
| Packaging | Rail/Tube |
| Peripherals | Brown-out Detect/Reset, POR |
| Radiation Hardening | No |
| RAM Size | 128B |
| Reach SVHC Compliant | No |
| RoHS Compliant | Yes |
| Series | 89C |
| Width | 7.112mm |
| RoHS | Compliant |
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