The SST89C54-33-I-NJ is an 8-bit 8051 microcontroller with 20KB of flash memory and 256B of RAM. It operates at a maximum frequency of 33MHz and has a maximum operating temperature of 85°C. The device is packaged in a PLCC package and is available in a rail/Tube packaging configuration. It has 32 programmable I/O lines and 3 timers/counters. The microcontroller is not RoHS compliant.
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| Package/Case | PLCC |
| Core Architecture | 8051 |
| Data Bus Width | 8b |
| Interface | UART |
| Max Frequency | 33MHz |
| Max Operating Temperature | 85°C |
| Max Supply Voltage | 5.5V |
| Memory Size | 20KB |
| Memory Type | FLASH, |
| Min Operating Temperature | -40°C |
| Min Supply Voltage | 2.7V |
| Number of Programmable I/O | 32 |
| Number of Timers/Counters | 3 |
| Packaging | Rail/Tube |
| RAM Size | 256B |
| RoHS Compliant | No |
| RoHS | Not Compliant |
