RA4M3 datasheet(39/92 Pages) RENESAS

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Oscillator

IRQ

Internal reset

(low is valid)

Reset exception handling start

Deep Software Standby mode

Deep Software Standby

reset

(low is valid)

tDSBY

tDSBYWT

Figure 2.15

Deep Software Standby mode cancellation timing

tSNZ

IRQ

ICLK (to DTC, SRAM)*1 PCLK

ICLK (except DTC, SRAM)

Oscillator

Software Standby mode

Snooze mode

Note 1. When SNZCR.SNZDTCEN bit is set to 1, ICLK is supplied to DTC and SRAM.

Figure 2.16

Recovery timing from Software Standby mode to Snooze mode

2.3.5

NMI and IRQ Noise Filter

Table 2.21

NMI and IRQ noise filter

Parameter

Symbol

Min

Typ

Max

Unit

Test conditions

NMI pulse

width

tNMIW

200

—

NMI digital filter

disabled

tPcyc × 2 ≤ 200 ns

tPcyc × 2*1

—

tPcyc × 2 > 200 ns

200

—

NMI digital filter

enabled

tNMICK × 3 ≤ 200 ns

tNMICK × 3.5*2

—

tNMICK × 3 > 200 ns

IRQ pulse

width

tIRQW

200

—

IRQ digital filter

disabled

tPcyc × 2 ≤ 200 ns

tPcyc × 2*1

—

tPcyc × 2 > 200 ns

200

—

IRQ digital filter

enabled

tIRQCK × 3 ≤ 200 ns

tIRQCK × 3.5*3

—

tIRQCK × 3 > 200 ns

RA4M3 Datasheet

2. Electrical Characteristics

R01DS0368EJ0120 Rev.1.20

Dec 2, 2020

Page 39 of 92

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