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| Part Number | MCF51AC256BCFUE | MCF51AC256BCPUE | MCF51AC256BVFUE | MCF51AC256ACFUE | MCF51AC256BCFGE | 
|---|---|---|---|---|---|
| Manufacturer | NXP USA Inc. | NXP USA Inc. | NXP USA Inc. | Freescale Semiconductor | NXP USA Inc. | 
| Product Status | Active | Active | Active | Active | Active | 
| Core Processor | Coldfire V1 | Coldfire V1 | Coldfire V1 | Coldfire V1 | Coldfire V1 | 
| Core Size | 32-Bit Single-Core | 32-Bit Single-Core | 32-Bit Single-Core | 32-Bit Single-Core | 32-Bit Single-Core | 
| Speed | 50MHz | 50MHz | 50MHz | 50MHz | 50MHz | 
| Connectivity | I²C, SCI, SPI | I²C, SCI, SPI | I²C, SCI, SPI | CANbus, I²C, SCI, SPI | I²C, SCI, SPI | 
| Peripherals | LVD, PWM, WDT | LVD, PWM, WDT | LVD, PWM, WDT | LVD, PWM, WDT | LVD, PWM, WDT | 
| Number of I/O | 54 | 54 | 54 | 54 | 36 | 
| Program Memory Size | 256KB (256K x 8) | 256KB (256K x 8) | 256KB (256K x 8) | 256KB (256K x 8) | 256KB (256K x 8) | 
| Program Memory Type | Flash | Flash | Flash | Flash | Flash | 
| EEPROM Size | - | - | - | - | - | 
| RAM Size | 32K x 8 | 32K x 8 | 32K x 8 | 32K x 8 | 32K x 8 | 
| Voltage - Supply (Vcc/Vdd) | 2.7V ~ 5.5V | 2.7V ~ 5.5V | 2.7V ~ 5.5V | 2.7V ~ 5.5V | 2.7V ~ 5.5V | 
| Data Converters | A/D 20x12b | A/D 20x12b | A/D 20x12b | A/D 20x12b | A/D 9x12b | 
| Oscillator Type | External | External | External | External | External | 
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 105°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | 
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | 
| Package / Case | 64-QFP | 64-LQFP | 64-QFP | 64-QFP | 44-LQFP | 
| Supplier Device Package | 64-QFP (14x14) | 64-LQFP (10x10) | 64-QFP (14x14) | 64-QFP (14x14) | 44-LQFP (10x10) |