RA4C1 datasheet(74/97 Pages) RENESAS

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tVOFF

Vdet2

VCC

tdet

tLVD2

Td(E-A)

LVD2CMPCR.LVD2E

LVD2

Comparator output

LVD2CR0.CMPE

LVD2SR.MON

Internal reset signal

(active-low)

When LVD2CR0.RN = 0

When LVD2CR0.RN = 1

VLVH

tLVD2

Figure 2.51

Voltage detection circuit timing (Vdet2)

2.8

VRTC POR Characteristics

Table 2.58

Power-on reset circuit of VRTC characteristics

Parameter

Symbol

Min

Typ

Max

Unit

Test Conditions

Voltage detection

level

Power-on reset of

VRTC (VRTC_POR)

When

power

supply rise

VRTCPOR

1.51

1.55

1.59

Figure 2.52

When

power

supply fall

VRTCPDR

1.49

1.53

1.57

Minimum pulse

width

tRTCVOFF

—

500

—

µs

Figure 2.52

Hysteresis width of VRTC (VRTC_POR)

VRTCPORH

—

Wait time after power-on reset cancellation

tRTCPOR

—

Figure 2.52

Power-on reset of VRTC response delay time*1

trtcdet

—

500

µs

Figure 2.52

Power-on reset of VRTC enable time*1

tW (VRTC_POR)

—

Figure 2.52, VRTC =

below 1.0 V

Note 1. The minimum VRTC down time indicates the time when VRTC is below the minimum value of the voltage detection level of

VRTC_POR.

RA4C1 Datasheet

2. Electrical Characteristics

R01DS0457EJ0110 Rev.1.10

Jul 4, 2025

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