Datasheet

RL78/G14 2. ELECTRICAL SPECIFICATIONS (A, D: TA = -40 to +85 C)
R01DS0053EJ0200 Rev. 2.00 Page 82 of 187
Oct 25, 2013
Note 1. The smaller maximum transfer rate derived by using f MCK /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
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. 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
 EVDD0 < 4.0 V and 2.3 V  Vb  2.7 V
Note 4. This value as an example is calculated when the conditions described in the “Conditions” column are met.
Refer to
Note 3 above to calculate the maximum transfer rate under conditions of the customer.
Note 5. Use it with EVDD0  Vb.
(6) Communication at different potential (1.8 V, 2.5 V, 3 V) (UART mode)
(T
A = -40 to +85 C, 1.6 V  EVDD0 = EVDD1  VDD  5.5 V, VSS = EVSS0 = EVSS1 = 0 V) (2/2)
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 Note 1 Note 1 bps
Theoretical value of the
maximum transfer rate
C
b = 50 pF, Rb = 1.4 k,
V
b = 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 Note 3 Note 3 bps
Theoretical value of the
maximum transfer rate
C
b = 50 pF, Rb = 2.7 k,
V
b = 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
C
b = 50 pF, Rb = 5.5 k,
V
b = 1.6 V
0.43
Note 7
0.43
Note 7
0.43
Note 7
Mbps
Maximum transfer rate =
1
[bps]
Baud rate error (theoretical value) =
1
Transfer rate  2
-
{-C
b  Rb  In (1 - )}  3
2.2
V
b
{-Cb  Rb  In (1 - )}
2.2
V
b
( )  Number of transferred bits
1
Transfer rate
 100 [%]
* This value is the theoretical value of the relative difference between the transmission and reception sides.
Maximum transfer rate =
1
[bps]
Baud rate error (theoretical value) =
1
Transfer rate  2
-
{-C
b  Rb  In (1 - )}  3
2.0
V
b
{-Cb  Rb  In (1 - )}
2.0
V
b
( )  Number of transferred bits
1
Transfer rate
 100 [%]
* This value is the theoretical value of the relative difference between the transmission and reception sides.