R8C datasheet(5/106 Pages) RENESAS

5 / 106 page

R01DS0011EJ0100 Rev.1.00

Page 5 of 102

Dec 21, 2010

R8C/LA3A Group, R8C/LA5A Group, R8C/LA6A Group, R8C/LA8A Group

1. Overview

1.1.3

Specifications

Tables 1.6 to 1.8 list the specifications.

Note:

1. No pull-up resistor is provided in the pins P5_4 to P5_6.

Table 1.6

Specifications (1)

Item

Function

Specification

CPU

Central processing unit

R8C CPU core

• Number of fundamental instructions: 89

• Minimum instruction execution time:

50 ns (f(XIN) = 20 MHz, VCC = 2.7 V to 5.5 V)

125 ns (f(XIN) = 8 MHz, VCC = 1.8 V to 5.5 V)

• Multiplier: 16 bits × 16 bits

→ 32 bits

• Multiply-accumulate instruction: 16 bits × 16 bits + 32 bits

→ 32 bits

• Operating mode: Single-chip mode (address space: 1 Mbyte)

Memory

ROM/RAM

Data flash

Refer to Tables 1.9 to 1.12 Product Lists.

Power

Supply

Voltage

Detection

Voltage detection circuit

• Power-on reset

• Voltage detection 3 (detection level of voltage detection 0 and

voltage detection 1 selectable)

I/O Ports

Programmable

I/O ports

R8C/LA3A Group • CMOS I/O ports: 26, selectable pull-up resistor (1)

• High current drive ports: 8

R8C/LA5A Group • CMOS I/O ports: 44, selectable pull-up resistor (1)

• High current drive ports: 8

R8C/LA6A Group • CMOS I/O ports: 56, selectable pull-up resistor (1)

• High current drive ports: 8

R8C/LA8A Group • CMOS I/O ports: 72, selectable pull-up resistor (1)

• High current drive ports: 10

Clock

Clock generation circuits

4 circuits: XIN clock oscillation circuit

XCIN clock oscillation circuit (32 kHz)

High-speed on-chip oscillator (with frequency adjustment function)

Low-speed on-chip oscillator

• Oscillation stop detection:

XIN clock oscillation stop detection function

• Frequency divider circuit:

Division ratio selectable from 1, 2, 4, 8, and 16

• Low-power-consumption modes:

Standard operating mode (high-speed clock, low-speed clock, high-

speed on-chip oscillator, low-speed on-chip oscillator), wait mode,

stop mode, power-off mode

Real-time clock (timer RH)

Interrupts

R8C/LA3A Group • Number of interrupt vectors: 69

• External Interrupt: 13 (INT × 5, key input × 8)

• Priority levels: 7 levels

R8C/LA5A Group • Number of interrupt vectors: 69

• External Interrupt: 14 (INT × 6, key input × 8)

• Priority levels: 7 levels

R8C/LA6A Group • Number of interrupt vectors: 69

• External Interrupt: 16 (INT × 8, key input × 8)

• Priority levels: 7 levels

R8C/LA8A Group

Watchdog Timer

• 14 bits × 1 (with prescaler)

• Selectable reset start function

• Selectable low-speed on-chip oscillator for watchdog timer

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