Arizona Microchip PIC16F1827-I/P is a 8-bit 18-pin Flash Microcontroller with nanoWatt XLP technology. This family of device contains an enhanced mid-range 8-bit CPU core. The CPU has 49 instructions. Interrupt capability includes automatic context saving. The hardware stack is 16 levels deep and has overflow and underflow reset capability. The microcontroller with direct, indirect and relative addressing modes. Two file select registers (FSRs) provides the ability to read program and data memory. The enhanced mid-range core has a 15-bit program counter capable of addressing a 32k x 14 program memory space. Accessing a location above these boundaries will cause a wrap-around within the implemented memory space. The Reset vector is at 0000h and the interrupt vector is at 0004h.

Arizona Microchip PIC16F648A-E/P is a 8-bit fully-static Flash-based CMOS Microcontroller. The PIC16F648A features 4MHz internal oscillator, 256 bytes of EEPROM data memory, a capture/compare/PWM, a USART, 2 Comparators and a programmable voltage reference. The PIC16F648A have enhanced core features, an eight-level deep stack and multiple internal and external interrupt sources. The separate instruction and data buses of the Harvard architecture allow a 14-bit wide instruction word with the separate 8-bit wide data. The two-stage instruction pipeline allows all instructions to execute in a single cycle, except for program branches (which require two cycles). A total of 35 instructions (reduced instruction set) are available, complemented by a large register set. The PIC16F648A devices have integrated features to reduce external components, enhancing system reliability and reducing power consumption. The PIC16F62X series fits in applications ranging from battery chargers to low power remote sensors.