R5F52105ADFG datasheet(9/92 Pages) RENESAS

Part #	R5F52105ADFG

Description	50-MHz 32-bit RX MCUs, 78 DMIPS, up to 512-KB flash memory, 12-bit AD, 10-bit DA

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Manufacturer	RENESAS [Renesas Technology Corp]

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R01DS0041EJ0050 Rev.0.50

Page 9 of 90

Apr 15, 2011

RX210 Group

1. Overview

Under development Preliminary document

Specifications in this document are tentative and subject to change.

1.4

Pin Functions

Table 1.4 lists the pin functions.

Table 1.4

Pin Functions (1 / 4)

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).

Clock

XTAL

Output

Pins for connecting 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.

XCIN

Input

Input/output pins for the subclock generation circuit. Connect a

crystal resonator between XCIN and XCOUT.

XCOUT

Output

Operating mode

control

MD

Input

Pins for setting the operating mode. The signal levels on this pin

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.

CAC

CACREF

Input

Input pin for the measuring circuit for clock frequency precision.

On-chip emulator

FINED

I/O

FINE interface pin.

FINEC

Input

Clock pin for FINE interface.

Address bus

A0 to A23

Output

Output pins for the address.

Data bus

D0 to D15

I/O

Input and output pins for the bidirectional data bus.

Bus control

RD#

Output

Strobe signal which indicates that reading from the external bus

interface space is in progress.

WR#

Output

Strobe signal which indicates that writing to the external bus

interface space is in progress, in single-write strobe mode.

WR0#, WR1#

Output

Strobe signals which indicate that either group of data bus pins (D7

to D0, and D15 to D8) is valid in writing to the external bus interface

space, in byte strobe mode.

BC0#, BC1#

Output

Strobe signals which indicate that either group of data bus pins (D7

to D0 and D15 to D8) is valid in access to the external bus interface

space, in single-write strobe mode.

CS0# to CS3#

Output

Select signals for areas 0 to 3.

WAIT#

Input

Input pins for wait request signals in access to the external space.

ALE#

Output

Address latch signal when address/data multiplexed bus is

selected.

Interrupt (ICU)

NMI

Input

Non-maskable interrupt request signal.

IRQ0 to IRQ7

Input

Interrupt request signals.

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