| Model Number |
| ATMEGA644P-A15MZ |
AT89C2051-24SU |
| Model Name |
| Microchip Tech ATMEGA644P-A15MZ |
Microchip Tech AT89C2051-24SU |
| Category |
| Microcontroller Units (MCUs/MPUs/SOCs) |
Microcontroller Units (MCUs/MPUs/SOCs) |
| Brand |
| Microchip Tech |
Microchip Tech |
| Description |
| 32KB 2.7V~5.5V AVR 16MHz FLASH 32 QFN-44-EP(7x7) Microcontroller Units (MCUs/MPUs/SOCs) ROHS |
2KB 4V~6V 51Series 128Byte 24MHz FLASH 15 SOIC-20-300mil Microcontroller Units (MCUs/MPUs/SOCs) ROHS |
| RoHS |
| Lead free / RoHS Compliant |
Lead free / RoHS Compliant |
| Unit |
| Piece |
Piece |
| Weight: |
| 0.001 grams / 0.000035 oz |
0.984 grams / 0.03471 oz |
| Package / Case |
| QFN-44-EP(7x7) |
SOIC-20-300mil |
| Package / Arrange |
| Tape & Reel (TR) |
Tube-packed |
| Battery |
| No |
No |
| ECCN |
| EAR99 |
EAR99 |
| Infrared Data Association |
| - |
- |
| Low-Voltage Detect |
| - |
- |
| CCP Capture/Compare |
| - |
- |
| Program Storage Size |
| 32KB |
2KB |
| Internal Comparator |
| - |
- |
| communication protocol |
| - |
- |
| Operating Temperature Range |
| -40℃~+125℃ |
-40℃~+85℃ |
| Operating Voltage Range |
| 2.7V~5.5V |
4V~6V |
| Watchdog |
| - |
- |
| CPU Core |
| AVR |
51Series |
| Peripheral/Function |
| PWM;WDT |
LCD/LED Driver |
| Real-Time Clock |
| - |
- |
| Secure Digital Input and Output |
| - |
- |
| Universal Serial Bus |
| - |
- |
| Direct Memory Access |
| - |
- |
| PWM (Bit) |
| - |
- |
| Internal Oscillator |
| Yes |
Yes |
| CPU Maximum Speed |
| 16MHz |
24MHz |
| DAC (Bit) |
| - |
- |
| Program Memory Type |
| FLASH |
FLASH |
| ADC (Bit) |
| 10bit |
- |
| GPIO Ports Number |
| 32 |
15 |
