Renesas M16C FAMILY Bedienungsanleitung PDF herunterladen (Seite 10)

Resistor ladder

(Driver: Large)

Bi-directional bus

(Driver: Optimized)

Resistor ladder

Bi-directional bus(a)

Bi-directional bus (b)

M16C

1/4500

1/12500

Active: 20 MHz (XIN)

Power-Down Modes (R8C/2x @ 5V)

1/4

Active: 10 MHz High-speed OCO*

1/77

Active: 125 kHz Low-speed OCO*

Active: 32 kHz (XCIN)

1/333

Stop Mode

Wait: 32 kHz (XCIN)

Power Consumption (relative)

10mA

2.5mA

130µA

30µA

2.2µA

800nA

* OCO = On-chip Oscillator

WDT

Divide by 1

or greater

CPU

Peripherals

Multiple

Dividers

Divider

Select

Timers

Select

Adjust

125

kHz

MHz

kHz

Clock Generator Circuitry (R8C/2x) ADC Vref Cut-off

Vref

Off

AVss

Analog input

Resistor

A/D

Converter

Low-speed

On-chip Osc.

High-speed

On-chip Osc.

XIN

XCIN

Divider

Stop

Detect

125

kHz

Low-speed

On-chip Osc.

■ REASON #4: EFFICIENT

Extensive Power Management

• Independent clock signal selection for CPU

and peripherals provides great flexibility

for performance and power management

• Low-voltage operation down to 2.2V

reduces current consumption while

maintaining a high level of performance

• Peripherals such as the ADC can be

physically disconnected from the

power path for lowest power drain

Load Capacitance

Reduction By Optimized

Bi-directional Bus

Load capacitance is distributed by

using separate buses, thereby reducing

the power loss caused by charging and discharging.

In addition, the reduced load capacitance allows increases in

bus operating speeds.

The M16C is ideal for

portable devices because

it has multiple clock

sources and multiple

power-saving modes.

Multiple Clock Sour

ces:

• Main clock oscillator

• Sub-clock oscillator

• On-chip oscillators

• External clock

Top Reasons to select the M16C Platform

™

Multiple Clock Sources and Multiple Power-Saving Modes

Multiple Power-saving Modes:

• Main clock can be slowed down

• Processor can be put to sleep

• Processor and/or peripherals can

be driven by 32kHz sub-clock

• Peripherals can be individually

powered down

• All clocks can be turned off for

the lowest possible power draw

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 ... 45 46

Kommentare zu diesen Handbüchern

Keine Kommentare

Renesas M16C FAMILY Bedienungsanleitung Seite 10

Kommentare zu diesen Handbüchern

Verwandte Produkte und Handbücher für Vernetzung Renesas M16C FAMILY