Renesas RL78 Series User Manual

RL78/F13, F14 CHAPTER 15 SERIAL ARRAY UNIT
R01UH0368EJ0210 Rev.2.10 1012
Dec 10, 2015
15.9.5 Calculating transfer rate
The transfer rate for simplified I
2
C (IIC00, IIC01, IIC10, IIC11, IIC20, IIC21, IIC30, IIC31) communication can be calculated
by the following expressions.
(Transfer rate) = {Operation clock (f
MCK) frequency of target channel} ÷ (SDRmn[15:9] + 1) ÷ 2
Caution Setting SDRmn[15:9] = 0000000B is prohibited. Setting SDRmn[15:9] = 0000001B or more.
Remarks 1. The value of SDRmn[15:9] is the value of bits 15 to 9 of the SDRmn register (0000001B to
1111111B) and therefore is 1 to 127.
2. m: Unit number (m = 0, 1), n: Channel number (n = 0, 1), mn = 00, 01, 10, 11
The operation clock (f
MCK) is determined by serial clock select register m (SPSm) and bit 15 (CKSmn) of serial mode
register mn (SMRmn).

Renesas RL78 Series Specifications

General

Core	RL78
CPU Clock Speed	Up to 32 MHz
Flash Memory	Up to 512 KB
RAM	Up to 32 KB
Operating Voltage	1.6 V to 5.5 V
Low Power Modes	HALT, STOP, SNOOZE
CPU Architecture	16-bit
Temperature Range	-40°C to +85°C
Package	LQFP
Timers	16-bit timers
Communication Interfaces	UART, I2C, LIN
A/D Converter	12-bit