R5F110ME datasheet(53/153 Pages) RENESAS

53 / 153 page

RL78/L1C

2. ELECTRICAL SPECIFICATIONS (A: TA = -40 to +85 °C)

R01DS0192EJ0200 Rev. 2.00

Page 53 of 149

Feb 21, 2014

Note 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 2.7 V

 VDD < 3.6 V and 2.3 V  Vb  2.7 V

Note 2.

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.

Note 3.

Use it with VDD

 Vb.

Note 4.

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 1.8 V

 VDD < 3.3 V and 1.6 V  Vb  2.0 V

Note 5.

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

Refer to Note 4 above to calculate the maximum transfer rate under conditions of the customer.

Caution

Select the TTL input buffer for the RxDq pin and the N-ch open drain output (VDD tolerance) mode for the TxDq

pin by using port input mode register g (PIMg) and port output mode register g (POMg). For VIH and VIL, see the

DC characteristics with TTL input buffer selected.

(6)

Communication at different potential (1.8 V, 2.5V) (UART mode)

(TA = -40 to +85 °C, 1.8  VDD  3.6 V, VSS = 0 V)

(2/2)

Parameter

Symbo

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 Note 2

transmission 2.7 V

 VDD  3.6 V,

2.3 V

 Vb  2.7 V

Note 1

bps

Theoretical value of the

maximum transfer rate

Cb = 50 pF, Rb = 2.7 k

,

Vb = 2.3 V

1.2 Note 2

Mbp

1.8 V

 VDD  3.3 V,

1.6 V

 Vb  2.0 V

Notes 3, 4

bps

Theoretical value of the

maximum transfer rate

Cb = 50 pF, Rb = 5.5 k

,

Vb = 1.6 V

0.43 Note 5

Mbp

Maximum transfer rate =

[bps]

Baud rate error (theoretical value) =

Transfer rate

 2

{-Cb

 Rb  In (1 -

)}

 3

{-Cb

 Rb  In (1 -

)}

(

)

 Number of transferred bits

Transfer rate

 100 [%]

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

2.0

Maximum transfer rate =

[bps]

Baud rate error (theoretical value) =

Transfer rate

 2

{-Cb

 Rb  In (1 -

)}

 3

{-Cb

 Rb  In (1 -

)}

(

)

 Number of transferred bits

Transfer rate

 100 [%]

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

1.5

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