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| Part Number | PIC16C66-04E/SO | PIC16C66-04I/SO | PIC16C66-04E/SP | PIC16C66T-04E/SO | PIC16C66-04/SO |
|---|---|---|---|---|---|
| Manufacturer | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Product Status | Obsolete | Active | Obsolete | Obsolete | Active |
| Core Processor | PIC | PIC | PIC | PIC | PIC |
| Core Size | 8-Bit | 8-Bit | 8-Bit | 8-Bit | 8-Bit |
| Speed | 4MHz | 4MHz | 4MHz | 4MHz | 4MHz |
| Connectivity | I²C, SPI, UART/USART | I²C, SPI, UART/USART | I²C, SPI, UART/USART | I²C, SPI, UART/USART | I²C, SPI, UART/USART |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT | Brown-out Detect/Reset, POR, PWM, WDT | Brown-out Detect/Reset, POR, PWM, WDT | Brown-out Detect/Reset, POR, PWM, WDT | Brown-out Detect/Reset, POR, PWM, WDT |
| Number of I/O | 22 | 22 | 22 | 22 | 22 |
| Program Memory Size | 14KB (8K x 14) | 14KB (8K x 14) | 14KB (8K x 14) | 14KB (8K x 14) | 14KB (8K x 14) |
| Program Memory Type | OTP | OTP | OTP | OTP | OTP |
| EEPROM Size | - | - | - | - | - |
| RAM Size | 368 x 8 | 368 x 8 | 368 x 8 | 368 x 8 | 368 x 8 |
| Voltage - Supply (Vcc/Vdd) | 4V ~ 6V | 4V ~ 6V | 4V ~ 6V | 4V ~ 6V | 4V ~ 6V |
| Data Converters | - | - | - | - | - |
| Oscillator Type | External | External | External | External | External |
| Operating Temperature | -40°C ~ 125°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 125°C (TA) | -40°C ~ 125°C (TA) | 0°C ~ 70°C (TA) |
| Mounting Type | Surface Mount | Surface Mount | Through Hole | Surface Mount | Surface Mount |
| Package / Case | 28-SOIC (0.295", 7.50mm Width) | 28-SOIC (0.295", 7.50mm Width) | 28-DIP (0.300", 7.62mm) | 28-SOIC (0.295", 7.50mm Width) | 28-SOIC (0.295", 7.50mm Width) |
| Supplier Device Package | 28-SOIC | 28-SOIC | 28-SPDIP | 28-SOIC | 28-SOIC |
