Specification
| Base Part Number | AT89S53 |
| Speed | 24MHz |
| Voltage Supply | 4 V ~ 6 V (Vcc/Vdd) |
| Supplier Device Package | 40-PDIP |
| RAM Size | 256 x 8 |
| Program Memory Type | Flash |
| Program Memory Size | 12KB (12K x 8) |
| Peripherals | WDT |
| Part Status | Obsolete |
| Packaging | Tube |
| Package Case | 40-DIP (0.600", 15.24mm) |
| Oscillator Type | Internal |
| Operating Temperature | -40 deg C ~ 85 deg C (TA) |
| Number of IO | 32 I/O |
| Core Size | 8-Bit |
| Core Processor | 8051 |
| Connectivity | SPI, UART/USART |
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