R7KA8M2AFDCAM datasheet(263/295 Pages) RENESAS

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Tj_detect_L

Internal reset signal

(Low is vaild.)

TEMPRCR.TSNEN

TEMPRCR.CMPEN

TEMPRCR.TEMPREN

tTSTBL*1

tRSTBL*2

Temperature

Note 1. tTSTBL is the stabilization wait time of TSN.

Note 2. tTSTBL is the stabilization wait time of the comparator in TSN.

Figure 2.146

Timing of temperature monitor reset (Low-temperature detection)

2.13

VBATT Characteristics

Table 2.114

Battery backup function characteristics (1 of 2)

Conditions: VCC = VCC_DCDC = VCC_USB = 1.62 to 3.63 V, VBATT = 1.62 to 3.63 V

Parameter

Symbol

Min

Typ

Max

Unit

Test conditions

Voltage level for switching to battery backup

OFS1.PVDAS and PVDLPSEL are 0 in Deep

Software Standby mode 1, 2 (VDETVATT_n

follows VDSEL[2:0] setting for PVD0)

VDETBATT_0

2.760

2.850

2.940

Figure 2.147

VDETBATT_1

2.500

2.580

2.660

VDETBATT_2

2.080

2.150

2.220

VDETBATT_3

1.935

2.000

2.065

VDETBATT_4

1.840

1.900

1.960

VDETBATT_5

1.740

1.800

1.860

VDETBATT_6

1.620

1.670

1.730

Voltage level for switching to battery backup

(Other than above)

VDETBATT_0

2.710

2.800

2.890

VDETBATT_1

2.450

2.530

2.610

VDETBATT_2

2.030

2.100

2.170

VDETBATT_3

1.885

1.950

2.015

VDETBATT_4

1.790

1.850

1.910

VDETBATT_5

1.690

1.750

1.810

VCC drop detection stabilization wait time*2

tDETWT

—

µs

—

Lower-limit VBATT voltage for power supply

switching caused by VCC voltage drop

VBATTSW

1.8

—

Figure 2.147

VCC-off period for starting power supply

switching*1

(OFS1.PVDAS and PVDLPSEL are 0 in Deep

Software Standby mode 1, 2)

tVOFFBATT

—

µs

VCC-off period for starting power supply

switching*1

(Other than above)

—

RA8M2 Datasheet

2. Electrical Characteristics

R01DS0438EJ0130 Rev.1.30

Feb 27, 2026

Page 263 of 295

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