R5F10JBCANA Datasheet, PDF (45/138 Pages) Renesas Technology Corp – Integrated USB Controller, True Low Power Platform

RL78/G1C
2. ELECTRICAL SPECIFICATIONS (A: TA = -40 to +85°C)
(6) Communication at different potential (2.5 V, 3 V) (UART mode) (2/2)
(TA = −40 to +85°C, 2.4 V ≤ VDD ≤ 5.5 V, VSS = 0 V)
Parameter Symbol
Conditions
MIN. TYP. MAX. Unit
Transfer rate
transmission 4.0 V ≤ VDD ≤ 5.5 V,
Note 1 bps
2.7 V ≤ Vb ≤ 4.0 V
Theoretical value of the
maximum transfer rate
2.8 ^{Note 2} Mbps
Cb = 50 pF, Rb = 1.4 kΩ, Vb = 2.7 V
2.7 V ≤ VDD < 4.0 V
2.3 V ≤ Vb ≤ 2.7 V
Theoretical value of the
maximum transfer rate
Note 3
1.2 ^{Note 4}
bps
Mbps
Cb = 50 pF, Rb = 2.7 kΩ, Vb = 2.3 V
2.4 V ≤ VDD < 3.3 V
Notes bps
5, 6
1.6 V ≤ Vb ≤ 2.0 V
Theoretical value of the
maximum transfer rate
0.43
Note 7
Mbps
Cb = 50 pF, Rb = 5.5 kΩ, Vb = 1.6 V
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 ≤ VDD ≤ 5.5 V and 2.7 V ≤ Vb ≤ 4.0 V
Maximum transfer rate =
1
{−Cb × Rb × ln (1 −
2.2
Vb
)} × 3
[bps]
Baud rate error (theoretical value) =
1
Transfer rate × 2
− {−Cb × Rb × ln (1 −
2.2
Vb ^)}
1
( _{Transfer rate} ) × Number of transferred bits
× 100 [%]
* This value is the theoretical value of the relative difference between the transmission and reception sides.
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.
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 ≤ VDD < 4.0 V and 2.3 V ≤ Vb ≤ 2.7 V
Maximum transfer rate =
1
{−Cb × Rb × ln (1 −
2.0
Vb
)} × 3
[bps]
Baud rate error (theoretical value) =
1
Transfer rate × 2
− {−Cb × Rb × ln (1 −
2.0
Vb ^)}
1
( _{Transfer rate} ) × Number of transferred bits
× 100 [%]
* This value is the theoretical value of the relative difference between the transmission and reception sides.
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.
5. Use it with VDD ≥ Vb.
R01DS0348EJ0100 Rev.1.00
Aug 08, 2013
Page 45 of 135