Renesas H8S/2111B Bedienungsanleitung PDF herunterladen (Seite 8)

Family of Microcontrollers

■ Renesas: The #1

Flash MCU supplier

• Renesas, the world’s #1

supplier of flash, has

shipped over 1 Billion

flash MCUs

• Wide range of sizes of

highly reliable F-ZTAT

(flash) up to 1MB,

in 0.18µm process

• Fastest flash write time:

2.5 sec./ 128KB for

0.18µm process

• Access as fast as

10ns @ 100MHz

• Up to -40°C to +125°C range

• Multiple user-friendly modes for

programming/reprogramming

flash memory

• User mode allows flash to be

programmed or erased by user

application software

• Boot mode allows in-system

programming using RS-232

serial port

• USB devices can be optionally

programmed via the USB port

• User Boot mode allows storing

a custom flash update routine

in a special protected area

• Write mode enables MCU

programming with desktop

or production programmers

• Flash can be programmed via

the on-chip debug emulator

Next-Generation

Non-volatile

Memory

- MRAM

- PRAM

MONOS-type

FLASH

(MONOS = Metal

Oxide Nitride

Oxide Silicon)

80MHz

(0.2- 0.18µm)

2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014

Stacked-type

(NOR) Flash HND

Memory Structure

NOR

80MHz

(150 nm)

NOR

50MHz

(180 nm)

MONOS

133MHz

(65nm)

166MHz

(45nm)

New

NVM

New

NVM

80MHz

100MHz

(150 nm)

MONOS

100MHz

(90nm)

MONOS

All Flash memory accesses are

single cycle, eliminating the

need for pre-fetch operations.

MRAM

80MHz

(130 nm)

NOR

TOP REASONS TO SELECT H8

Serial Transfers using DMA only

Parallel operation made possible

by using DMA + EXDMA allows

more data transfers in a given

length of time for increased

system throughput

Parallel Transfers using DMA + EXDMA

A1 A2 A3

B1 B2

A2A1 A3

Bus Bridge

Internal Bus

Peripheral Bus

External Bus

DMA

(4ch)

EXDMA

(Full Speed)

Flash

ROM

INTC BSC

H8S CPU

RAM DTC

External SRAM

External Device

Time Saved

“A” Transfers

“B” Transfers

I/O Ports

Powerful Data Path

Management

H8 products are fully optimized system

solutions, so besides powerful CPU core

processing, H8 MCUs have advanced

data path management.

There are three types of data movement

engines: System DMA, External DMA

and Data Transfer Controller. The

Advanced Bus System Controller

manages complex data and control

across the multiple-bus architecture.

The H8S and H8SX MCU architectures

use 3 separate buses. Data movement on

the External Bus and System Bus can

operate in parallel, greatly increasing

system performance by optimizing

operation per clock cycle.

This example shows system operation (red) using the

System DMA, while in parallel the External DMA is

transferring data between an external device and the MCU

(yellow). This parallel operation reduces time for operation.

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