Renesas RX200 Series, User Manual

Page: 21 / 41

Renesas Solution Starter Kit for RX23W 5. User Circuitry
R20UT4446EG0102 Rev. 1.02 Page 21 of 41
Jun 22, 20
5.10 I
2
C Bus (Inter-IC Bus)
The RX23W features two I
2
C (Inter-IC Bus) interface modules. RIIC0 is connected to a 2Kbit EEPROM. Table
5-10
below details the connected device, and their connection to the MCU.
Table 5-10: I
2
C Bus Connections
I
2
C Bus signal Function
MCU
Port Pin
E2P-SDA Data P17 B1
E2P-SCL Clock P16 C3
5.11 Serial Sound Interface (SSI)
The RX23W microcontroller has one channel of serial digital sound interface (SSI), connected to the MCU
Headers. Table 5-11 shows the connection relationship.
Table 5-11: SSI Connections
SSI Signal *1 Function
MCU
Port Pin
SSITXD0 Serial data output P17 B1
SSIRXD0 Serial data input P26 B2
SSIWS0 Word select P27 B3
AUDIO_MCLK Audio master clock P30 A2
SSISCK0 Serial bit clock P31 B4
*1
: This connection is a not available in the default RSSK configuration - refer to §6 for the required
modifications.
5.12 Touch Interface
The RX23W microcontroller is fitted with a four Touch Interface (slider) and one Touch Interfaces (key). Table
5-12 below details the connected devices, and their connections to the MCU.
Table 5-12: Touch Interface Connections
Touch Signal Function
MCU
Port Pin
TS4
Capacitance measurement terminal (Touch key)
P25 A1
TS23
Capacitance measurement terminal (Upper of touch slider)
PC5 G2
TS27
Capacitance measurement terminal (Middle upper of touch slider)
PC3 H1
TS30
Capacitance measurement terminal (Middle lower of touch slider)
PC2 H2
TS35
Capacitance measurement terminal (Lower of touch slider)
PC0 J1
TSCAP
LPF (Low-pass filter) connection terminal
PC4 G1