R5F2L3AAANFP#U1 Renesas Electronics America, R5F2L3AAANFP#U1 Datasheet - Page 178

• Manufacturer Part Number: R5F2L3AAANFP#U1
• Description: MCU FLASH 96+4KB 100LQFP
• Manufacturer: Renesas Electronics America
• Series: R8C/Lx/3AAr

Specifications of R5F2L3AAANFP#U1

• Core Processor: R8C
• Core Size: 16/32-Bit
• Speed: 20MHz
• Connectivity: I²C, LIN, SIO, SSU, UART/USART
• Peripherals: LCD, POR, PWM, Voltage Detect, WDT
• Number Of I /o: 88
• Program Memory Size: 96KB (96K x 8)
• Program Memory Type: FLASH
• Ram Size: 10K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 20x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 100-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/L35A Group, R8C/L36A Group, R8C/L38A Group, R8C/L3AA Group,
R8C/L35B Group, R8C/L36B Group, R8C/L38B Group, R8C/L3AB Group
REJ09B0441-0100 Rev.1.00
Page 141 of 802
9.7
9.7.1
9.7.2
9.7.3
9.7.4
9.7.5
This section describes key points and processing methods for reducing power consumption. They should be
referred to when designing a system or creating a program.
Even after the MCU enters wait mode or stop mode, the states of the I/O ports are retained. Current flows into
the output ports in the active state, and shoot-through current flows into the input ports in the high-impedance
state. Unnecessary ports should be set to output. When setting them to input, fix to a stable electric potential
before the MCU enters wait mode or stop mode.
Power consumption generally depends on the number of the operating clocks and their frequencies. The fewer
the number of operating clocks or the lower their frequencies, the more power consumption decreases.
Unnecessary clocks should be stopped accordingly.
Stopping the low-speed on-chip oscillator oscillation: CM14 bit in CM1 register
Power consumption can be reduced in wait mode, stop mode, and power-off mode.
When peripheral function clocks are not necessary in wait mode, set bits CM01 and CM02 bit in the CM0
register to stop the clock.
When timer RA is not used, set the TCKCUT bit in the TRAMR register to 1 (count source cutoff).
When timer RB is not used, set the TCKCUT bit in the TRBMR register to 1 (count source cutoff).
When timer RC is not used, set the MSTTRC bit in the MSTCR register to 1 (standby).
When timer RD is not used, set bits TCK2 to TCK0 in the TRDCRi (i = 0 to 1) register to 000b (f1) and the
MSTTRD bit in the MSTCR register to 1 (standby).
When timer RG is not used, set the MSTTRG bit in the MSTCR register to 1 (standby).
Reducing Power Consumption
Ports
Clocks
Wait Mode, Stop Mode, and Power-Off Mode
Stopping Peripheral Function Clocks
Timers
Oct 30, 2009
9. Power Control