R5F104FCAFP datasheet(88/207 Pages) RENESAS

88 / 207 page

RL78/G13

2. ELECTRICAL SPECIFICATIONS (TA = –40 to +85°C)

R01DS0131EJ0350 Rev.3.50

88 of 200

Jun 30, 2020

(6) Communication at different potential (1.8 V, 2.5 V, 3 V) (UART mode) (2/2)

(TA = –40 to +85°C, 1.8 V

≤ EVDD0 = EVDD1 ≤ VDD ≤ 5.5 V, VSS = EVSS0 = EVSS1 = 0 V)

Parameter

Symbol

Conditions

HS (high-

speed main)

Mode

LS (low-speed

main) Mode

LV (low-

voltage main)

Mode

Unit

MIN.

MAX.

MIN.

MAX.

MIN.

MAX.

Transfer rate

Transmission 4.0 V

≤ EVDD0 ≤ 5.5 V,

2.7 V

≤ Vb ≤ 4.0 V

Note 1

bps

Theoretical

value of the

maximum

transfer rate

Cb = 50 pF, Rb =

1.4 k

Ω, Vb = 2.7 V

2.8

Note 2

2.8

Note 2

2.8

Note 2

Mbps

2.7 V

≤ EVDD0 < 4.0 V,

2.3 V

≤ Vb ≤ 2.7 V

Note 3

bps

Theoretical

value of the

maximum

transfer rate

Cb = 50 pF, Rb =

2.7 k

Ω, Vb = 2.3 V

1.2

Note 4

1.2

Note 4

1.2

Note 4

Mbps

1.8 V

≤ EVDD0 < 3.3 V,

1.6 V

≤ Vb ≤ 2.0 V

Notes

5, 6

Notes

5, 6

Notes

5, 6

bps

Theoretical

value of the

maximum

transfer rate

Cb = 50 pF, Rb =

5.5 k

Ω, Vb = 1.6 V

0.43

Note 7

0.43

Note 7

0.43

Note 7

Mbps

Notes 1.

The smaller maximum transfer rate derived by using fMCK/6 or the following expression is the valid maximum

transfer rate.

Expression for calculating the transfer rate when 4.0 V

≤ EVDD0 ≤ 5.5 V and 2.7 V ≤ Vb ≤ 4.0 V

Maximum transfer rate =

[bps]

{–Cb × Rb × ln (1 –

2.2

)} × 3

Transfer rate × 2

– {–Cb × Rb × ln (1 –

2.2

)}

Baud rate error (theoretical value) =

× 100 [%]

(

Transfer rate

) × Number of transferred bits

* This value is the theoretical value of the relative difference between the transmission and reception sides.

This value as an example is calculated when the conditions described in the “Conditions” column are met.

Refer to Note 1 above to calculate the maximum transfer rate under conditions of the customer.

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