R5F526TACDFM datasheet(113/142 Pages) RENESAS

113 / 142 page

R01DS0407EJ0120 Rev.1.20

Page 113 of 142

Oct 31, 2024

RX26T Group

2. Electrical Characteristics

Figure 2.69

RI3C Data Transfer — ACK by Target

ACK

SDA

RnW ACK

SCL

SDR transfer

0.7 × VCC

0.3 × VCC

0.7 × VCC

0.3 × VCC

= Open-drain pull-up class

= High speed active push-pull drive

0.7 × VCC

SDA

ACK

0.3 × VCC

RnW

CR_SDA

0.7 × VCC

0.3 × VCC

0.7 × VCC

0.3 × VCC

TGT_SDA

SCL

tSCO

Timing parameters

used

tSU_OD

Open-drain

tSCO

Open-drain or

Push-pull

tSU_PP

Push-pull

0.7 × VCC

0.3 × VCC

Transition from

open-drain to

push-pull

SCL clocks are shown identical for OD and PP

even though they differ substantially

= Active drive by controller or target

= Open-drain pull-up class by controller

= Hi-Z by target

Note:

Open-drain: Controller releases SDA after a suitable delay

from SCL edges

Push-Pull: Controller drives SDA after a suitable delay

from SCL edges

Note 1. tSCO is depicted for informative purposes only.

R5F526TACDFM Datasheet(PDF) 113 Page - Renesas Technology Corp

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