UPD70741 datasheet(1/112 Pages) NEC

номер детали	UPD70741

подробное описание детали	V821TM 32-/16-BIT MICROPROCESSOR

PDF	112 Pages

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производитель	NEC [NEC]

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DATA SHEET

MOS INTEGRATED CIRCUIT

µPD70741

V821TM

32-/16-BIT MICROPROCESSOR

The

µPD70741 (V821) is a 32/16-bit RISC microprocessor that uses, as its processor core, the high-

performance 32-bit microprocessor

µPD70732 (V810TM) designed for built-in control applications. It incorporates

peripheral functions such as a DRAM/ROM controller, 2-channel DMA controller, real-time pulse unit, serial

interface, and interrupt controller.

The V821, which offers quick real-time response, high-speed integer instructions, bit string instructions, and

floating-point instructions, is ideally suited to use in OA equipment such as printers and facsimiles, image

processing devices such as those used in navigation units, portable devices, and other devices demanding

excellent cost performance.

The functions are described in detail in the following User’s Manuals, which should be read before

starting design work.

• V821 User’s Manual Hardware

: U10077E

• V810 FamilyTM User’s Manual Architecture : U10082E

FEATURES

The V810 32-bit microprocessor is used as the CPU core

•

Separate address/data bus

Address bus : 24 bits

Data bus

: 16 bits

•

Built-in 1-Kbyte instruction cache memory

•

Pipeline structure of 1-clock pitch

•

Internal 4-Gbyte linear address space

•

32-bit general-purpose registers: 32

Instructions ideal for various application fields

•

Floating-point operation instructions and bit string

instructions

Interrupts controller

•

Nonmaskable : 1 external input

•

Maskable

: 8 external inputs and 11 types of

internal sources

•

Priorities can be specified in units of four groups.

Wait control unit

•

Capable of CS control over four blocks in both memory

and I/O spaces.

•

Linear address space of each block: 16M bytes

Memory access control functions

• Supports DRAM high-speed page mode.

• Supports page-ROM page mode.

DMA controller (DMAC): 2 channels

• Maximum transfer count: 65 536

• Two transfer types (fly-by (1-cycle) transfer and

2-cycle transfer)

• Three transfer modes (single transfer, single-

step transfer, and block transfer)

Serial interfaces : 2 channels

• Asynchronous serial interface (UART):

1 channel

• Synchronous serial interface (CSI):

1 channel

Real-time pulse unit

• 16-bit timer/event counter : 1 channel

• 16-bit interval timer

: 1 channel

Watchdog timer functions

Clock generator functions

Standby functions (HALT, IDLE, and STOP modes)

The information in this document is subject to change without notice.

The mark

shows major revised points.

Document No. U11678EJ4V0DS00 (4th edition)

Date Published June 1998 J CP(K)

Printed in Japan

©

1996

Аналогичный номер детали - UPD70741

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Renesas Technology Corp	UPD70741	691Kb / 114P	MOS INTEGRATED CIRCUIT 1996
Renesas Technology Corp	UPD70741GC-25-8EU	691Kb / 114P	MOS INTEGRATED CIRCUIT 1996

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