R5F101LE datasheet(92/202 Pages) RENESAS

92 / 202 page

RL78/G13

2. ELECTRICAL SPECIFICATIONS (TA = -40 to +85

C)

Page 92 of 196

R01DS0131EJ0330 Rev.3.30

Mar 31, 2016

(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)

HS (high-

speed main)

Mode

LS (low-

speed main)

Mode

LV (low-

voltage

main) Mode

Parameter

Symbol

Conditions

MIN. MAX. MIN. MAX. MIN. MAX.

Unit

Note

bps

4.0 V

 EVDD0  5.5 V,

2.7 V

 Vb  4.0 V

Theoretical

value of the

maximum

transfer rate

Cb = 50 pF, Rb =

1.4 k

, Vb = 2.7

2.8

Note 2

2.8

Note 2

2.8

Note 2

Mbps

Note

bps

2.7 V

 EVDD0 < 4.0 V,

2.3 V

 Vb  2.7 V

Theoretical

value of the

maximum

transfer rate

Cb = 50 pF, Rb =

2.7 k

, Vb = 2.3

1.2

Note 4

1.2

Note 4

1.2

Note 4

Mbps

Notes

5, 6

Notes

5, 6

Notes

5, 6

bps

Transfer rate

Transmission

1.8 V

 EVDD0 < 3.3 V,

1.6 V

 Vb  2.0 V

Theoretical

value of the

maximum

transfer rate

Cb = 50 pF, Rb =

5.5 k

, Vb = 1.6

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

Vb )} × 3

Transfer rate

 2  {C

× Rb × ln (1



2.2

Vb )}

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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