R01UH0823EJ0100 Rev.1.00
Page 61 of 1823
Jul 31, 2019
RX23W Group
1. Overview
Serial peripheral
interface
RSPCKA
I/O
Input/output pin for the RSPI clock.
MOSIA
I/O
Input/output pin for transmitting data from the RSPI master.
MISOA
I/O
Input/output pin for transmitting data from the RSPI slave.
SSLA0
I/O
Input/output pin to select the slave for the RSPI.
SSLA1, SSLA3
Output
Output pins to select the slave for the RSPI.
Serial sound
interface
SSISCK0
I/O
SSI serial bit clock pin.
SSIWS0
I/O
Word selection pin.
SSITXD0
Output
Serial data output pin.
SSIRXD0
Input
Serial data input pin.
AUDIO_MCLK
Input
Master clock pin for audio.
CAN module
CRXD0
Input
Input pin
CTXD0
Output
Output pin
SD host
interface
SDHI_CLK
Output
SD clock output pin
SDHI_CMD
I/O
SD command output, response input signal pin
SDHI_D3 to SDHI_D0
I/O
SD data bus pins
SDHI_CD
Input
SD card detection pin
SDHI_WP
Input
SD write-protect signal
USB 2.0 host/
function module
VCC_USB
Input
Power supply pin for USB. Connect this pin to VCC or connect this pin to
VSS via a 0.33 µF smoothing capacitor for stabilizing the internal power
supply.
VSS_USB
Input
Ground pin for USB. Connect this pin to VSS.
USB0_DP
I/O
D+ I/O pin of the USB on-chip transceiver.
USB0_DM
I/O
D- I/O pin of the USB on-chip transceiver.
USB0_VBUS
Input
USB cable connection monitor pin.
USB0_EXICEN
Output
Low-power control signal for the OTG chip.
USB0_VBUSEN
Output
VBUS (5 V) supply enable signal for the OTG chip.
USB0_OVRCURA,
USB0_OVRCURB
Input
External overcurrent detection pins.
USB0_ID
Input
Mini-AB connector ID input pin during operation in OTG mode.
12-bit A/D
converter
AN000 to AN007, AN016 to
AN020, AN027
Input
Input pins for the analog signals to be processed by the A/D converter.
ADTRG0#
Input
Input pin for the external trigger signal that start the A/D conversion.
12-bit D/A
converter
DA0, DA1
Output
Analog output pins of the D/A converter.
Comparator B
CMPB2, CMPB3
Input
Input pin for the analog signal to be processed by comparator B.
CVREFB2, CVREFB3
Input
Analog reference voltage supply pin for comparator B.
CMPOB2, CMPOB3
Output
Output pin for comparator B.
CTSU
TS2 to TS4, TS7, TS8,
TS12, TS13, TS22, TS23,
TS27, TS30, TS35
Output
Electrostatic capacitance measurement pins (touch pins).
TSCAP
Output
LPF connection pin.
Analog power
supply
AVCC0
Input
Analog voltage supply pin for the 12-bit A/D converter and D/A converter.
Connect this pin to VCC when not using the 12-bit A/D converter and D/A
converter.
AVSS0
Input
Analog ground pin for the 12-bit A/D converter and D/A converter. Connect
this pin to VSS when not using the 12-bit A/D converter and D/A converter.
VREFH0
Input
Analog reference voltage supply pin for the 12-bit A/D converter.
VREFL0
Input
Analog reference ground pin for the 12-bit A/D converter.
Table 1.4
Pin Functions (3/4)
Classifications
Pin Name
I/O
Description