The 78K series of Microcontrollers by Renesas are suitable for a wide range of applications.
78K0R/Kx3 microcontrollers are 16-bit low-power 78K0R CPU core, timers, A/D converters and serial interfaces. The power consumption is the same as an 8-Bit microcontroller and is for Consumer, Communication and Industrial applications.

Key Features:
Operating voltage: VDD = 1.8 V to 5.5 V
Max. frequency: 20 MHz
ROM capacities: 64 KB to 512 KB flash memory
RAM capacities: 4 KB to 30 KB
Packages: 64 pins FPBGA or QFP package, 80/100/128//144-pin LQFP package
Minimum instruction execution time can be changed from high speed (0.05 μs: @ 20 MHz operation with high-speed system clock) to ultra low-speed (61 μs: @ 32.768 kHz operation with subsystem clock)
General purpose register: 8 x 32 bits registers (8 x 8 bits registers x 4 banks)
On-chip single-power-supply flash memory (with prohibition of chip erase/block erase/writing function)
Self-programming (with boot swap function/flash shield window function)
On-chip debug function
On-chip power-on-clear (POC) circuit and low voltage detector (LVI)
On-chip watchdog timer (operable with the on-chip internal low-speed oscillation clock)
On-chip multiplier (16 x 16 bits)
On-chip key interrupt function
On-chip clock output/buzzer output controller
On-chip BCD adjustment
I/O ports: 55/70/88/116/132 (N-ch open drain: 4)

Timer: 10/14 channels
• 16-bit timer: 8/12 channels
• Watchdog timer: 1 channel
• Real-time counter: 1 channel
Serial interface
• CSI: 2 channels/UART: 1 channel
• CSI: 2 channels/UART: 1 channel/simplified I2C: 1/2 channels
• CSI: 2 channels/UART: 1 channel/simplified I2C: 1/2 channels
• UART (LIN-bus supported): 1 channel
• I2C: 1 channel
10-bit resolution A/D converter (AVREF = 2.3 V to 5.5 V): 8/16 channels
8-bit resolution D/A converter (AVREF1 = 1.8 V to 5.5 V): 2 channels
Operating ambient temperature: TA = -40 to +85°C