| Family Name |
AT89 |
| Data Bus Width (bit) |
8 |
| Device Core |
80C51 |
| Instruction Set Architecture |
CISC |
| Maximum Clock Rate (MHz) |
60 |
| Program Memory Type |
Flash |
| Program Memory Size |
64KB |
| RAM Size |
2KB |
| Maximum Expanded Memory Size |
64KB |
| Maximum CPU Frequency (MHz) |
60 |
| EEPROM |
2KB |
| Direct Memory Access |
No |
| Floating Point Unit |
No |
| Bluetooth |
No |
| Wi-Fi |
No |
| Multiply Accumulate |
No |
| Internal/External Clock Type |
Internal/External |
| Touch Sensing Interface |
No |
| Power On Reset |
Yes |
| Memory Protection Unit |
No |
| Temperature Sensor |
No |
| DDR |
No |
| Memory Management Unit |
No |
| Integrated Development Environment |
No |
| Super Scalar |
No |
| External Bus Interface |
No |
| Number of Programmable I/Os |
32 |
| Number of Timers |
3 |
| Core Architecture |
8051 |
| PWM |
5 |
| Watchdog |
1 |
| Parallel Master Port |
No |
| Real Time Clock |
No |
| Special Features |
Programmable Counter Array |
| Interface Type |
SPI/UART |
| Timers Resolution (bit) |
16/16/16 |
| Programmability |
Yes |
| SPI |
1 |
| I2C |
0 |
| I2S |
0 |
| Process Technology |
CMOS |
| UART |
1 |
| USART |
0 |
| CAN |
0 |
| USB |
0 |
| Ethernet |
0 |
| Maximum Power Dissipation (mW) |
1000 |
| Minimum Operating Supply Voltage (V) |
2.7 |
| Typical Operating Supply Voltage (V) |
3.3|5 |
| Maximum Operating Supply Voltage (V) |
5.5 |
| Minimum Operating Temperature (°C) |
-40 |
| Maximum Operating Temperature (°C) |
85 |
| Temperature Flag |
Opr |
| Supplier Temperature Grade |
Industrial |
| Operating Supply Voltage (V) |
3.3|5 |
| Maximum Storage Temperature (°C) |
150 |
| Minimum Storage Temperature (°C) |
-65 |
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