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R01DS0264EU0140 Rev.1.40

Page 53 of 107

Sep 3, 2024

S124 Datasheet

2. Electrical Characteristics

2.3.5

NMI and IRQ Noise Filter

Note:

200 ns minimum in Software Standby mode.

Note 1. tPcyc indicates the PCLKB cycle.

Note 2. tNMICK indicates the cycle of the NMI digital filter sampling clock.

Note 3. tIRQCK indicates the cycle of the IRQi digital filter sampling clock (i = 0 to 7).

Figure 2.33

NMI interrupt input timing

Figure 2.34

IRQ interrupt input timing

Table 2.30

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

tNMIW

NMI

tIRQW

IRQ

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