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| Part Number | AT89C51CC03U-7CTIM | AT89C51CC03C-7CTIM | 
|---|---|---|
| Manufacturer | Microchip Technology | Microchip Technology | 
| Product Status | Obsolete | Obsolete | 
| Core Processor | 80C51 | 80C51 | 
| Core Size | 8-Bit | 8-Bit | 
| Speed | 40MHz | 40MHz | 
| Connectivity | CANbus, SPI, UART/USART | CANbus, SPI, UART/USART | 
| Peripherals | POR, PWM, WDT | POR, PWM, WDT | 
| Number of I/O | 36 | 36 | 
| Program Memory Size | 64KB (64K x 8) | 64KB (64K x 8) | 
| Program Memory Type | Flash | Flash | 
| EEPROM Size | 2K x 8 | 2K x 8 | 
| RAM Size | 2.25K x 8 | 2.25K x 8 | 
| Voltage - Supply (Vcc/Vdd) | 3V ~ 5.5V | 3V ~ 5.5V | 
| Data Converters | A/D 8x10b | A/D 8x10b | 
| Oscillator Type | External | External | 
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | 
| Mounting Type | Surface Mount | Surface Mount | 
| Package / Case | 64-LFBGA, CSPBGA | 64-LFBGA, CSPBGA | 
| Supplier Device Package | 64-CSPBGA (8x8) | 64-CSPBGA (8x8) |