Japan English
RL78/F12
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Product Overview:
RL78/F12 Group microcontrollers employ the RL78 core which realizes high processing performance while delivering the lowest power consumption in their class, and are suitable for automotive applications.
A high-precision (±2%) on-chip oscillator makes 32 MHz CPU operation possible (24 MHz for K grade products), and built-in features such as a reset circuit, a low voltage detection circuit, a watchdog timer, and data flash with background operation function help to lower the total cost of building a system and contribute to more compact size and lower power consumption.
In addition, abundant functions for supporting functional safety, such as an A/D converter testing function, are also on-chip.
With 20 to 64-pin packages and the standard in-vehicle network, LIN (Local Interconnect Network), these products are suitable for a broad range of automotive body control applications such as remote keyless entry, power windows, automatic air conditioning, and lighting modules.
Pin Count / Memory Size Lineup:
Block Diagram:
Key Features:
Power supply voltage: VDD = 1.8 to 5.5 V (J version)/VDD = 2.7 to 5.5 V (K version)
Max. frequency: 32 MHz
ROM capacities: 8 KB to 64 KB flash memory
RAM capacities: 0.5 KB to 4 KB
Data flash capacities: 4 KB
Package:
- 20-pin plastic SSOP(300mil) , 30-pin plastic SSOP(300mil) , 32-pin plastic QFN(5x5) , 48-pin plastic QFP/QFN(7x7) , 64-pin plastic QFP(10x10)
Minimum instruction execution time can be changed from high speed (0.03125 µs: @ 32 MHz operation with highspeed system clock) to ultra low-speed (30.5 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
- Selectable from 32 MHz (TYP.)/24 MHz (TYP.)/16 MHz (TYP.)/12 MHz (TYP.)/8 MHz (TYP.)/4 MHz (TYP.)/1 MHz (TYP.)
On-chip single-power-supply flash memory (with prohibition of 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/unsigned)
- 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: 16 to 44 (N-ch open drain: 0 to 4)
Timer
- 16-bit timer: 8 channels
- Watchdog timer: 1 channel
- Realtime counter: 1 channel
- Interval timer: 1 channel
- Wake-up timer: 1 channel
Serial interface
- CSI
- UART (LIN-bus supported)
- I2C／simplified I2C
Stanby function
- HALT
- STOP
- SNOOZE
8/10-bit resolution A/D converter (VDD = 1.8 to 5.5 V): 4 to 10 channels
Operating ambient temperature: TA = -40 to +85°C (J version)/TA = -40 to +125°C (K version)
Key Applications:
- Car Body
Product Lineup:
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