RA4C1 datasheet(19/97 Pages) RENESAS

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Table 2.1

Absolute maximum ratings (2 of 2)

Parameter

Symbol

Value

Unit

Analog input voltage

When AN000 to AN006 are

used

VAN

-0.3 to AVCC0 + 0.3

When AN017 to AN025 are

used

-0.3 to VCC + 0.3

Operating temperature*3

Topr

-40 to +105

°C

Storage temperature

Tstg

-55 to +125

°C

Note 1. Ports P301, P302, P400, and P401 are 5V-tolerant.

Do not input signals or an I/O pull-up power supply while the device is not powered. The current injection that results from input of

such a signal or I/O pull-up might cause malfunction and the abnormal current that passes in the device at this time might cause

degradation of internal elements.

Note 2. Connect AVCC0 to VCC

Note 3. See section 2.2.1. Tj/Ta Definition.

Caution: Permanent damage to the MCU may result if absolute maximum ratings are exceeded.

To preclude any malfunctions due to noise interference, insert capacitors with high frequency

characteristics between the VCC and VSS pins, between the AVCC0 and AVSS0 pins, and between the

VREFH0 and VREFL0 pins when VREFH0 is selected as the high potential reference voltage for the

ADC12. Place capacitors of the following value as close as possible to every power supply pin and use

the shortest and heaviest possible traces:

● VCC and VSS: about 0.1 µF

● VRTC and VSS: about 0.1 µF

● AVCC0 and AVSS0: about 0.1 µF

● VREFH0 and VREFL0: about 0.1 µF

Also, connect capacitors as stabilization capacitance.

Connect the VCL pin and VCL0 pin to a VSS pin by a 4.7 µF capacitor. Each capacitor must be placed

close to the pin.

Table 2.2

Recommended operating conditions

Parameter

Symbol

Min

Typ

Max

Unit

Power supply voltages

VCC*1 *2

1.6

—

3.6

VSS

—

RTC power supply voltage

VRTC

1.6

—

3.6

Analog power supply voltages

AVCC0*1 *2

1.6

—

3.6

AVSS0

—

VREFH0

When used as ADC12

Reference

1.6

—

AVCC0 V

VREFL0

—

Note 1. Use AVCC0 and VCC under the following conditions:

AVCC0 = VCC

Note 2. When powering on the VCC and AVCC0 pins, power them on at the same time or the VCC pin first and then the AVCC0 pins.

When powering off the VCC and AVCC0 pins, power them off at the same time or the AVCC0 pin first and then the VCC pins.

2.2

DC Characteristics

2.2.1

Tj/Ta Definition

Table 2.3

DC characteristics

Conditions: Products with operating temperature (Ta) -40 to +105 °C

Parameter

Symbol

Typ

Max

Unit

Test conditions

Permissible junction temperature

—

125*1

°C

High-speed mode

Middle-speed mode

Low-speed mode

Subosc-speed mode

RA4C1 Datasheet

2. Electrical Characteristics

R01DS0457EJ0110 Rev.1.10

Jul 4, 2025

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