V850 family

Product Letter

The single-chip V853 microcontroller is a member of NEC’s 32-bit RISC V850 family.

It integrates CPU, ROM, RAM and peripheral functions on chip. The internal bus is 32 bits

wide, the external bus 16 bits wide. Controller memory options are listed in Table 1.

Like other V850 series controllers, the V853 device is used for real-time control

applications, such as servo motor control in computer peripherals and machine tools, for

engine management control, consumer electronics and multimedia. Flash memory, a variety

of serial communication channels and AD/DA converters make it the perfect choice for

compact communication terminals and complete control systems. Typical benefits of Flash

memory are individually programmed devices in the final production process and field

upgradability. With their low power consumption and power-saving modes, V853 devices

are also ideal for portable applications.

Description

Applications

Features

V853

32-bit RISC Microcontrollers

Block Diagram

• Small 32-bit RISC CPU core

• 30 ns minimum instruction execution time

(33 MHz max. clock)

• 16-Mbyte linear address space

• 1-Mbyte external address space

• 32 general-purpose registers

• 74 instructions optimized for embedded

control

• DSP functionality with 16-bit multiplication

and saturation logic in a single clock cycle

• Up to 8 Kbytes internal RAM

• Interrupt controller

• Real-time pulse unit/timers

• Serial interface with baud rate generator

• A/D and D/A converters

• PWM

• Clock generator

• Power save functions

• Mask ROM, Flash versions

• 100-pin LQFP package

Interrupt

Controller

ROM

Mask

96/128

Kbytes

or Flash

128/256

Kbytes

SIO

RAM

4 Kbytes/

8 Kbytes

A

L

U

Internal Peripheral Bus

NMI

ASTB

R/

A16-A19

AD0-AD15

DSTB

W

UBEN

LBEN

WAIT

HLDRQ

HLDAK

INTP

PWM

PWM

CPU Core

Timer/Counter

16-bit timer:

5 channels

TI

TO

TCLR1

SO3

SI3

SCK3

Bus

Control

Unit

Instruction

Queue

PC

PC

Barrel Shifter

System

Registers

General

Registers

Hardware

Multiplier

16 x 16 > 32

A/D Converter

CKSEL

CLK

X1

X2

MODE

OUT

RESET

AV

AV

REF1

SS

ADTRG

ANI1-ANI7

ANO

D/A Converter

Ports

P0-11

Oscillator and

Clock Generator

System Control

UART/CSI

BRG

CSI

UART/CSI

BRG

CSI

BRG

SO0/TxD0

SI0/RxD0

SCK0

SO2

SI2

SCK2

SO1/TxD1

SI1/RxD1

SCK1