Renesas RL78/G15 - 24.5 Serial Interface Characteristics

RL78/G15 CHAPTER 24 ELECTRICAL SPECIFICATIONS (T
A
= −40 to +105°C, TA = −40 to +125°C)
R01UH0959EJ0110 Rev.1.10 Page 741 of 765
Mar 7, 2023
24.5 Serial Interface Characteristics
AC Timing Test Points
V
IH
/V
OH
V
IH
/V
OH
Test points
V
IL
/V
OL
V
IL
/V
OL
24.5.1 Serial array unit
(1) UART mode
[T
A
= −40 to +105°C: G products, T
A
= −40 to +125°C: M products, 2.4 V ≤ V
DD
≤ 5.5 V, V
SS
= 0 V]
Item Symbol Condition MIN. TYP. MAX. Unit
Transfer rate f
MCK
/12 bps
Theoretical value of the maximum
transfer rate
f
CLK
= f
MCK
= 16 MHz
1.3 Mbps
UART mode connection diagram
RL78
microcontroller
User device
TxD0
RxD0
Rx
Tx
UART mode bit width (reference)
Baud rate error tolerance
High-/low-bit width
1/Transfer rate
TxD0
RxD0
Remark f
MCK
: Serial array unit operation clock frequency
(Operation clock to be set by serial clock select register 0 (SPS0) and the CKS0n bit of serial mode register
0n (SMR0n). n: Channel number (n = 0, 1))