| Installation type | Through-Hole | 
| packing | pipe | 
| series | 89S | 
| Part status | stop production | 
| Memory type | Flash Memory | 
| storage capacity | 4KB(4K x 8) | 
| speed | 24MHz | 
| Voltage - Supply | 4V ~ 5.5V | 
| working temperature | -40°C ~ 85°C(TA) | 
| Encapsulation/Housing | 40-DIP(0.600,15.24mm) | 
| Country of origin | USA | 
| Warehouse | China/Hong Kong | 
| quality | Original genuine | 
| Number of cores | 8 bit | 
| Core processor | 8051 | 
| Connectivity | UART/USART | 
| peripheral | WDT | 
| Number of I/Os | 32 | 
| RAM size | 128 x 8 | 
| Oscillator type | Inside |