R29 datasheet(21/473 Pages) RENESAS

21 / 473 page

R8C/28 Group, R8C/29 Group

1. Overview

Rev.2.10

Sep 26, 2008

Page 2 of 441

REJ09B0279-0210

1.2

Performance Overview

Table 1.1 outlines the Functions and Specifications for R8C/28 Group and Table 1.2 outlines the Functions and

Specifications for R8C/29 Group.

NOTES:

1. I2C bus is a trademark of Koninklijke Philips Electronics N. V.

2. Specify the D, K version if D, K version functions are to be used.

Table 1.1

Functions and Specifications for R8C/28 Group

Item

Specification

CPU

Number of fundamental

instructions

89 instructions

Minimum instruction

execution time

50 ns (f(XIN) = 20 MHz, VCC = 3.0 to 5.5 V) (other than K version)

62.5 ns (f(XIN) = 16 MHz, VCC = 3.0 to 5.5 V) (K version)

100 ns (f(XIN) = 10 MHz, VCC = 2.7 to 5.5 V)

200 ns (f(XIN) = 5 MHz, VCC = 2.2 to 5.5 V) (N, D version)

Operating mode

Single-chip

Address space

1 Mbyte

Memory capacity

Refer to Table 1.3 Product Information for R8C/28 Group

Peripheral

Functions

Ports

I/O ports: 13 pins, Input port: 3 pins

LED drive ports

I/O ports: 8 pins (N, D version)

Timers

Timer RA: 8 bits × 1 channel

Timer RB: 8 bits × 1 channel

(Each timer equipped with 8-bit prescaler)

Timer RC: 16 bits × 1 channel

(Input capture and output compare circuits)

Timer RE: With real-time clock and compare match function

(For J, K version, compare match function only.)

Serial interfaces

1 channel (UART0): Clock synchronous serial I/O, UART

1 channel (UART1): UART

Clock synchronous serial

interface

1 channel

I2C bus Interface(1)

Clock synchronous serial I/O with chip select

LIN module

Hardware LIN: 1 channel (timer RA, UART0)

A/D converter

10-bit A/D converter: 1 circuit, 4 channels

Watchdog timer

15 bits × 1 channel (with prescaler)

Reset start selectable

Interrupts

Internal: 15 sources (N, D version), Internal: 14 sources (J, K version)

External: 4 sources, Software: 4 sources, Priority levels: 7 levels

Clock generation circuits

3 circuits

• XIN clock generation circuit (with on-chip feedback resistor)

• On-chip oscillator (high speed, low speed)

High-speed on-chip oscillator has a frequency adjustment function

• XCIN clock generation circuit (32 kHz) (N, D version)

• Real-time clock (timer RE) (N, D version)

Oscillation stop detection

function

XIN clock oscillation stop detection function

Voltage detection circuit

On-chip

Power-on reset circuit

On-chip

Electrical

Characteristics

Supply voltage

VCC = 3.0 to 5.5 V (f(XIN) = 20 MHz) (other than K version)

VCC = 3.0 to 5.5 V (f(XIN) = 16 MHz) (K version)

VCC = 2.7 to 5.5 V (f(XIN) = 10 MHz)

VCC = 2.2 to 5.5 V (f(XIN) = 5 MHz) (N, D version)

Current consumption

(N, D version)

Typ. 10 mA (VCC = 5.0 V, f(XIN) = 20 MHz)

Typ. 6 mA (VCC = 3.0 V, f(XIN) = 10 MHz)

Typ. 2.0

µA (VCC = 3.0 V, wait mode (f(XCIN) = 32 kHz)

Typ. 0.7

µA (VCC = 3.0 V, stop mode)

Flash Memory

Programming and erasure

voltage

VCC = 2.7 to 5.5 V

Programming and erasure

endurance

100 times

Operating Ambient Temperature

-20 to 85

°C (N version)

-40 to 85

°C (D, J version)(2), -40 to 125°C (K version)(2)

Package

20-pin molded-plastic LSSOP

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