Renesas H8S/2111B Bedienungsanleitung PDF herunterladen (Seite 9)

Top Reasons To Select H8

7

■ On-chip Memory (SRAM)

• Many sizes of on-chip high-speed

SRAM: 256 Bytes to 56KB

• 8KB of JTAG debug memory can be used for

system op. (allowing 64KB on-chip SRAM)

• Single-cycle access at maximum speed

■ Low Power Consumption

Multiple innovative techniques

minimize MCU power consumption

• 0.4µA @ 32kHz

• Operating voltages as low as 1.8V

• Up to 8 power-down modes

• Module Standby mode allows software to

selectively halt on-chip functions

• Dual clock oscillators with 32kHz sub-clock

• On-chip oscillators

• Short oscillator stabilization times

(20µs, typically)

• Standby current as low as 0.1µA

H8 Power Consumption: H8/38602

1/20000

1/2500

1/10

1

Power consumption

(relative value)

Normal speed mode (3V, 10MHz)

Module Stop, Sleep,

Medium-Speed mode

Watch mode

(3V, 32KHz)

Standby

mode (3V)

Shorter Crystal Stabilization Time

competitor's

oscillation circuit

H8/38602

oscillation circuit

20μs, typically

Loss of Icc

milliseconds

Vcc

Vcc

TOP REASONS TO SELECT H8

• Certified USB

full-speed and

high-speed;

bus- or self-powered

• Multiple channels of

serial asynchronous/

synchronous interface

• Synchronous serial

unit (SSU) is compat-

ible with Freescale

(Motorola) SPI

™

• I

2

C

™

two-wire serial

interface conforms

to Phillips standard

• IrDA interface for

easy wireless line-of-

sight connectivity

• Smart Card interface

conforms to

ISO/IEC 7816-3

• Controller Area

Network (CAN 2.0B)

function for highly

reliable networked

embedded systems

H8

MCU

Peripheral

Chip array

CAN

LED &

Sensors

USB

I

2

C

IrDA

H8

MCU

H8

MCU

PC

Industry-standard Serial

Communication Interfaces

• On-chip oscillators as

fast as 20 MHz

available to CPU and

all peripherals

• Low-voltage detect

circuits to monitor

power supplies

efficiently without

additional components

• Power-on Reset circuit

eliminates external

chip and guarantees

a clean and reliable

start-up

• High-current I/Os can

drive LEDs directly

• LCD controllers with

booster circuits drive

higher voltage

displays without

the need of DC-DC

converters

• Internal voltage

regulators eliminate

need for expensive

power circuits

• Large range of

internal reliable flash

memory & high-speed

RAM that suffice

for most system

requirements

Res

Vcc

R

On-chip

Oscillator

Xin

Vss

POR,

LVD

No

External

Clock

Memory

No

External

Reset

Fail-Safe

Features

Internal

Flash &

RAM

Direct-LED

driving

Versatile

Functionality

GPIO

Many

Peripherals

H8

CPU

High component integration reduces

system cost and design complexity

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