Renesas RL78/G15 User Manual

RL78/G15 CHAPTER 12 SERIAL ARRAY UNIT
R01UH0959EJ0110 Rev.1.10 Page 366 of 765
Mar 7, 2023
12.2 Configuration of Serial Array Unit
The serial array unit includes the following registers, and input and output pins.
Table 12-1. Configuration of Serial Array Unit
Item Configuration
Shift register 8 or 9 bits
Note 1
Buffer register Lower 8 bits or 9 bits of serial data register mn (SDRmn)
Note 1
Serial clock I/O
SCK00, SCK01 pins (for simplified SPI), SCL00,
SCL00, SCL01 pins (for simplified I
2
C)
Serial data input
SI00, SI01 pins (for simplified SPI),
RxD0 pin (for UART)
Serial data output SO00, SO01 pins (for simplified SPI),
TxD0 pin (for UART)
Serial data I/O SDA00, SDA01 pins (for simplified I
2
C)
Control registers <Registers of unit setting block>
●
Peripheral enable register 0 (PER0)
●
Serial clock select register m (SPSm)
●
Serial channel enable status register m (SEm)
●
Serial channel start register m (SSm)
●
Serial channel stop register m (STm)
●
Serial output enable register m (SOEm)
●
Serial output register m (SOm)
●
Serial output level register m (SOLm)
●
Input switch control register (ISC)
●
Noise filter enable register 0 (NFEN0)
<Registers of each channel>
●
Serial data register mn (SDRmn)
●
Serial mode register mn (SMRmn)
●
Serial communication operation setting register mn (SCRmn)
●
Serial status register mn (SSRmn)
●
Serial flag clear trigger register mn (SIRmn)
●
Port output mode registers 0, 2, 4 (POM0, POM2, POM4)
●
Port mode control registers 0, 2 (PMC0, PMC2)
●
Port mode registers 0, 2, 4 (PM0, PM2, PM4)
●
Port registers 0, 2, 4 (P0, P2, P4)
Note 1. The lower 8 bits of serial data register mn (SDRmn) can be read or written as the following SFR, depending
on the communication mode.
 CSIp communication … SIOp (CSIp data register)
 UARTq reception … RXDq (UARTq receive data register)
 UARTq transmission … TXDq (UARTq transmit data register)
 IICr communication … SIOr (IICr data register)
Remark m: Unit number (m = 0), n: Channel number (n = 0, 1), p: CSI number (p = 00, 01)
q: UART number (q = 0), r: IIC number (r = 00, 01)

Renesas RL78/G15 Specifications

General

Brand	Renesas
Model	RL78/G15
Category	Microcontrollers
Language	English