RL78/G1A

Key Features:

Operating voltage: VDD = 1.6 to 3.6 V
Max. frequency: 32 MHz
ROM capacities: 16 KB to 64 KB flash memory
RAM capacities: 2 KB to 4 KB
Data flash: 4 KB
Pin count and Packages: 25-pin LGA, 32-pin QFN, 48-pin QFP, QFN, 64-pin QFP, BGA
Minimum instruction execution time can be changed from high speed (0.03125 µs: @ 32 MHz operation with highspeed system clock) to ultra low-speed (61 µs: @ 32.768 kHz operation with subsystem clock)
General-purpose register: 8 bits x 32 registers (8 bits x 8 registers x 4 banks)
On-chip internal high-speed oscillation clock

• Select from 32 MHz (TYP.), 24 MHz (TYP.), 16 MHz (TYP.), 12 MHz (TYP.), 8MHz (TYP.), 4 MHz (TYP.), and 1 MHz (TYP.)

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 (POR) circuit and low-voltage detector (LVD)
On-chip watchdog timer (operable with the on-chip internal low-speed oscillation clock)
On-chip multiplier/divider/multiply-accumulator

• 16 bits x 16 bits = 32 bits（signed）
• 32 bits / 32 bits = 32 bits（unsigned）
• 16 bitsx 16 bits + 32 bits = 32 bits (signed/unsigned)

On-chip key interrupt function
On-chip clock output/buzzer output controller
On-chip BCD adjustment
I/O ports: 19 to 56 (N-ch open drain: 2 to 4)
Timer

• 16-bit timer: 8 channels
• Watchdog timer: 1 channel
• Realtime counter: 1 channel
• Interval timer: 1 channel

Serial interface

• CSI
• UART (LIN-bus supported)
• I2C/simplified I2C

Stanby function

• HALT
• STOP
• SNOOZE

Different potential interface: Can connect to a 2.5 V device when operating at 3.0 V to 3.6 V
8/12-bit resolution A/D converter: 13 to 28 channels
Operating ambient temperature: TA = -40 to +85°C