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| Part Number | COP8SAC728N9 | COP8SAA728N9 | COP8SAB728N9 | COP8SAC720N9 | COP8SAC728M9 | COP8SAC728N8 | 
|---|---|---|---|---|---|---|
| Manufacturer | Texas Instruments | National Semiconductor | National Semiconductor | Texas Instruments | Texas Instruments | Texas Instruments | 
| Product Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | 
| Core Processor | COP8 | COP8 | COP8 | COP8 | COP8 | COP8 | 
| Core Size | 8-Bit | 8-Bit | 8-Bit | 8-Bit | 8-Bit | 8-Bit | 
| Speed | 10MHz | 10MHz | 10MHz | 10MHz | 10MHz | 10MHz | 
| Connectivity | Microwire/Plus (SPI) | Microwire/Plus (SPI) | Microwire/Plus (SPI) | Microwire/Plus (SPI) | Microwire/Plus (SPI) | Microwire/Plus (SPI) | 
| Peripherals | POR, PWM, WDT | POR, PWM, WDT | POR, PWM, WDT | POR, PWM, WDT | POR, PWM, WDT | POR, PWM, WDT | 
| Number of I/O | 24 | 24 | 24 | 16 | 24 | 24 | 
| Program Memory Size | 4KB (4K x 8) | 1KB (1K x 8) | 2KB (2K x 8) | 4KB (4K x 8) | 4KB (4K x 8) | 4KB (4K x 8) | 
| Program Memory Type | OTP | OTP | OTP | OTP | OTP | OTP | 
| EEPROM Size | - | - | - | - | - | - | 
| RAM Size | 128 x 8 | 64 x 8 | 128 x 8 | 128 x 8 | 128 x 8 | 128 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 | 2.7V ~ 5.5V | 
| Data Converters | - | - | - | - | - | - | 
| Oscillator Type | Internal | Internal | Internal | Internal | Internal | Internal | 
| Operating Temperature | 0°C ~ 70°C (TA) | 0°C ~ 70°C | 0°C ~ 70°C (TA) | 0°C ~ 70°C (TA) | 0°C ~ 70°C (TA) | -40°C ~ 85°C (TA) | 
| Mounting Type | Through Hole | Through Hole | Through Hole | Through Hole | Surface Mount | Through Hole | 
| Package / Case | 28-DIP (0.600", 15.24mm) | 28-DIP (0.600", 15.24mm) | 28-DIP (0.600", 15.24mm) | 20-DIP (0.300", 7.62mm) | 28-SOIC (0.295", 7.50mm Width) | 28-DIP (0.600", 15.24mm) | 
| Supplier Device Package | 28-PDIP | 28-DIP | 28-DIP | 20-PDIP | 28-SOIC | 28-PDIP |