RX21A_15 Datasheet, PDF (10/132 Pages) Renesas Technology Corp – Renesas MCUs

RX21A Group
1. Overview
Table 1.4
Pin Functions (2 / 3)
Classifications
Serial
communications
interface
I²C bus interface
Serial peripheral
interface
24-bit ∆Σ A/D
converter
10-bit A/D converter
D/A converter
Pin Name
I/O
Description
 Asynchronous mode/clock synchronous mode
SCK1, SCK5, SCK6, SCK8, I/O
SCK9
Input/output pins for the clock
RXD1, RXD5, RXD6, RXD8, Input
RXD9
Input pins for received data
TXD1, TXD5, TXD6, TXD8,
TXD9
Output
Output pins for transmitted data
CTS1#, CTS5#, CTS6#,
CTS8#, CTS9#
Input
Input pins for controlling the start of transmission and reception
RTS1#, RTS5#, RTS6#,
RTS8#, RTS9#
Output Output pins for controlling the start of transmission and reception
 Simple I²C mode
SSCL1, SSCL5, SSCL6,
I/O
SSCL8, SSCL9
Input/output pins for the I²C clock
SSDA1, SSDA5, SSDA6,
I/O
SSDA8, SSDA9
Input/output pins for the I²C data
 Simple SPI mode
SCK1, SCK5, SCK6, SCK8, I/O
SCK9
Input/output pins for the clock
SMISO1, SMISO5, SMISO6, I/O
SMISO8, SMISO9
Input/output pins for slave transmission of data
SMOSI1, SMOSI5, SMOSI6, I/O
SMOSI8, SMOSI9
Input/output pins for master transmission of data
SS1#, SS5#, SS6#, SS8#,
SS9#
Input
Chip-select input pins
 IrDA Interface
IRTXD5
Output Data output pin in the IrDA format
IRRXD5
Input
Data input pin in the IrDA format
SCL0, SCL1
I/O
Input/output pin for I²C bus interface clocks. Bus can be directly
driven by the N-channel open-drain output.
SDA0, SDA1
I/O
Input/output pin for I²C bus interface data. Bus can be directly
driven by the N-channel open-drain output.
RSPCKA, RSPCKB
I/O
Clock input/output pin for the RSPI.
MOSIA, MOSIB
I/O
Input or output data output from the master for the RSPI.
MISOA, MISOB
I/O
Input or output data output from the slave for the RSPI.
SSLA0, SSLB0
I/O
Input/output pin to select the slave for the RSPI.
SSLA1 to SSLA3,
SSLB1 to SSLB3
Output Output pins to select the slave for the RSPI.
ANDS0N to ANDS3N,
ANDS0P to ANDS3P
Input
Analog differential input pins for the ∆Σ A/D converter
ANDS4 to ANDS6
Input
Analog single-ended input pins for the ∆Σ A/D converter
ANDSSG
Input
Common signal ground pin for the analog single-ended inputs
(ANDS4 to ANDS6) for the ∆Σ A/D converter
AN0 to AN6
Input
Input pin for the analog signals to be processed by the A/D
converter.
ADTRG0#
Input
Input pin for the external trigger signals that start the A/D
conversion.
DA0, DA1
Output
Output pins for the analog signals to be processed by the D/A
converter.
R01DS0129EJ0110 Rev.1.10
Aug 28, 2014
Page 10 of 132