RZSLASHT1 datasheet(68/139 Pages) RENESAS

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R01DS0228EJ0200 Rev.2.00

Page 68 of 139

Jun. 30, 2025

RZ/T1 Group

2. Electrical Characteristics

Note 1. Take the number of cycles of waiting that suits the system configuration into consideration with regard to the fmax value for

CKIO (the external bus clock). When CKIO is running at 50 MHz or a higher frequency, set the B0 bit of the driving ability control

register (DSCR) to 1 to select high-drive output. When CKIO is running at less than 50 MHz, normal output of CKIO can be used

(DSCR.B0 bit = 0).

Note 2. Notation of 1/2tCKcyc in the delay time, setup time, and hold time shows 1/2 cycles from the clock rising edge, that is, the

reference of clock falling.

Note 3. These are values when SDRAM (TYPE[2:0] bits = 100b) is selected in the CSn space bus control register (CSnBCR) and high-

drive output (B0 bit = 1) is selected in the driving ability control register (DSCR) for CKIO.

Note 4. These are values when high-drive output (B0 bit = 1) and normal output (B0 bit = 0) are respectively selected in the driving

ability control register (DSCR) for CKIO.

Write data hold time 2

tWDH2

―

Figure 2.24 to

Figure 2.27,

Figure 2.31 to

Figure 2.33

Write data hold time 4

tWDH4

―

Figure 2.12 to

Figure 2.16

WAIT# setup time*4

High-drive output

tWTS

1/2tCKcyc + 4.5

―

Figure 2.13 to

Figure 2.19

Normal output

1/2tCKcyc + 8

―

WAIT# hold time

tWTH

1/2tCKcyc + 3.5

―

Figure 2.13 to

Figure 2.19

RAS# delay time 1

tRASD1

Figure 2.20 to

Figure 2.36

CAS# delay time 1

tCASD1

Figure 2.20 to

Figure 2.36

DQM delay time 1

tDQMD1

Figure 2.20 to

Figure 2.33

CKE delay time 1

tCKED1

Figure 2.35

AH# delay time

tAHD

1/2tCKcyc

1/2tCKcyc + 10

Figure 2.16

Multiplex address delay

time

tMAD

―

Figure 2.16

Multiplex address hold

time

tMAH

―

Figure 2.16

Address setup time to

AH#

tAVVH

1/2tCKcyc – 2

―

Figure 2.16

DACK/TEND delay time

tDACD

See DMAC timing

Figure 2.12 to

Figure 2.33

Table 2.17

Bus Timing (2 / 2)

Output load conditions: VOH = VCCQ33 × 0.5, VOL1 = VCCQ33 × 0.5, C = 30 pF

Item

Symbol

CKIO = 1/tCKcyc*1

Unit

Reference

Figure

Min.

Max.

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