The SST89E554RC-40-C-NJE is a 32KB FLASH microcontroller based on the 8051 core architecture. It features an 8-bit data bus and supports SPI and UART interfaces. The device operates at a maximum frequency of 40MHz and has a maximum supply voltage of 5.5V. It is packaged in a PLCC and is available in rail or tube packaging. The microcontroller has 32 programmable I/O pins and 1KB of RAM. It can operate over a temperature range of 0°C to 70°C.
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| Package/Case | PLCC |
| Core Architecture | 8051 |
| Data Bus Width | 8b |
| Interface | SPI, UART |
| Max Frequency | 40MHz |
| Max Operating Temperature | 70°C |
| Min Operating Temperature | 0°C |
| Max Supply Voltage | 5.5V |
| Memory Size | 32KB |
| Memory Type | FLASH, |
| Min Supply Voltage | 4.5V |
| Number of Programmable I/O | 32 |
| Packaging | Rail/Tube |
| RAM Size | 1KB |
| RoHS | Compliant |
