Datasheet
R01DS0052EJ0140 Rev.1.40 Page 40 of 150
2014.07.16
RX62N Group, RX621 Group 1. Overview
1.5 Pin Functions
Table 1.8 lists the pin functions.
Table 1.9 Pin Functions (1 / 7)
Classifications Pin Name I/O Description
Power supply VCC Input Power supply pin. Connect it to the system power supply.
VCL Input Connect this pin to VSS via a 0.1-
F capacitor. The capacitor
should be placed close to the pin.
VSS Input Ground pin. Connect it to the system power supply (0 V).
PLLVCC Input Power supply pin for the PLL circuit. Connect it to the system
power supply.
PLLVSS Input Ground pin for the PLL circuit.
Clock XTAL Output Pins for a crystal resonator. An external clock signal can be
input through the EXTAL pin.
EXTAL Input
BCLK Output Outputs the external bus clock for external devices.
SDCLK Output Outputs the clock dedicated for the SDRAM.
XCOUT Output Input/output pins for the subclock generation circuit. Connect a
crystal resonator between XCOUT and XCIN.
XCIN Input
Operating mode control MD0, MD1, MDE Input Pins for setting the operating mode. The signal levels on these
pins must not be changed during operation.
System control RES# Input Reset signal input pin. This LSI enters the reset state when this
signal goes low.
EMLE Input Input pin to enable the connection of the on-chip emulator
signal. When the on-chip emulator is used, this pin should be
driven high. When not used, it should be driven low.
BSCANP Input Boundary scan pin. Boundary scan is enabled when this pin
goes high. When not used, it should be driven low.
CNVSS CNVSS Input Connect this pin to VSS via pull-down resister.
On-chip emulator TRST# Input On-chip emulator pins or boundary scan pins. When the EMLE
pin is driven high, these pins are dedicated for the on-chip
emulator.
TMS Input
TDI Input
TCK Input
TDO Output
TRCLK Output This pin outputs the clock for synchronization with the trace
data.
TRSYNC Output This pin indicates that output from the TRDATA0 to TRDATA3
pins is valid.
TRDATA0-A/TRDATA3-B Output These pins output the trace information.
Address bus A0 to A15
A16-A/A16-B to
A23-A/A23-B
Output Output pins for the address.
Data bus D0 to D31 I/O Input and output pins for the bidirectional data bus.