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| Part Number | R5F21257SYFP#U0 | R5F21256SYFP#U0 |
|---|---|---|
| Manufacturer | Renesas Electronics America Inc | Renesas Electronics America Inc |
| Product Status | Obsolete | Obsolete |
| Core Processor | R8C | R8C |
| Core Size | 16-Bit | 16-Bit |
| Speed | 20MHz | 20MHz |
| Connectivity | I²C, LINbus, SIO, SSU, UART/USART | I²C, LINbus, SIO, SSU, UART/USART |
| Peripherals | POR, Voltage Detect, WDT | POR, Voltage Detect, WDT |
| Number of I/O | 41 | 41 |
| Program Memory Size | 48KB (48K x 8) | 32KB (32K x 8) |
| Program Memory Type | Flash | Flash |
| EEPROM Size | - | - |
| RAM Size | 2.5K x 8 | 2K x 8 |
| Voltage - Supply (Vcc/Vdd) | 2.2V ~ 5.5V | 2.2V ~ 5.5V |
| Data Converters | A/D 12x10b | A/D 12x10b |
| Oscillator Type | Internal | Internal |
| Operating Temperature | -20°C ~ 105°C (TA) | -20°C ~ 105°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 52-LQFP | 52-LQFP |
| Supplier Device Package | 52-LQFP (10x10) | 52-LQFP (10x10) |
