RX23T Datasheet, PDF (9/98 Pages) Renesas Technology Corp – 40-MHz 32-bit RX MCUs, built-in FPU, 65.6 DMIPS

RX23T Group
1. Overview
1.4 Pin Functions
Table 1.5 lists the pin functions.
Table 1.5
Pin Functions (1/2)
Classifications Pin Name
I/O
Description
Power supply
VCC
VCL
VSS
Input
—
Input
Power supply pin. Connect it to the system power supply.
Connect this pin to the VSS pin via the 4.7 μF smoothing capacitor used to
stabilize the internal power supply. Place the capacitor close to the pin.
Ground pin. Connect it to the system power supply (0 V).
Clock
Operating mode
control
System control
XTAL
EXTAL
MD
RES#
Output
Input
Input
Input
Pins for connecting a crystal. An external clock can be input through the
EXTAL pin.
Pin for setting the operating mode. The signal levels on this pin must not
be changed during operation.
Reset pin. This MCU enters the reset state when this signal goes low.
CAC
On-chip
emulator
CACREF
FINED
Input
I/O
Input pin for the clock frequency accuracy measurement circuit.
FINE interface pin.
Interrupts
NMI
IRQ0 to IRQ5
Input
Input
Non-maskable interrupt request pin.
Interrupt request pins.
Multi-function MTIOC0A, MTIOC0B
timer pulse unit 3 MTIOC0C, MTIOC0D
I/O
The TGRA0 to TGRD0 input capture input/output compare output/PWM
output pins.
MTIOC1A, MTIOC1B
I/O
The TGRA1 and TGRB1 input capture input/output compare output/PWM
output pins.
MTIOC2A, MTIOC2B
I/O
The TGRA2 and TGRB2 input capture input/output compare output/PWM
output pins.
MTIOC3A, MTIOC3B
MTIOC3C, MTIOC3D
MTIOC4A, MTIOC4B
MTIOC4C, MTIOC4D
MTIC5U, MTIC5V, MTIC5W
MTCLKA, MTCLKB,
MTCLKC, MTCLKD
ADSM0
I/O
I/O
Input
Input
The TGRA3 to TGRD3 input capture input/output compare output/PWM
output pins.
The TGRA4 to TGRD4 input capture input/output compare output/PWM
output pins.
The TGRU5, TGRV5, and TGRW5 input capture input/external pulse input
pins.
Input pins for the external clock.
Output A/D trigger output pin.
Port output
enable 3
POE0#, POE8#, POE10#
Input
Input pins for request signals to place the MTU pins in the high impedance
state.
8-bit timer
TMO0 to TMO3
TMCI0 to TMCI3
Output Compare match output pins.
Input Input pins for the external clock to be input to the counter.
Serial
communications
interface (SCIg)
TMRI0 to TMRI3
Input Counter reset input pins.
 Asynchronous mode/clock synchronous mode
SCK1, SCK5
I/O
Input/output pins for the clock.
RXD1, RXD5
Input Input pins for received data.
TXD1, TXD5
Output Output pins for transmitted data.
CTS1#, CTS5#
Input Input pins for controlling the start of transmission and reception.
RTS1#, RTS5#
 Simple I²C mode
SSCL1, SSCL5
SSDA1, SSDA5
Output Output pins for controlling the start of transmission and reception.
I/O
Input/output pins for the I²C clock.
I/O
Input/output pins for the I²C data.
R01DS0248EJ0110 Rev.1.10
Jan 13, 2016
Page 9 of 98