79RV3081E20PFB datasheet, PDF - EEWORLD Datasheet

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79RV3081E20PFB: DescriptionRISC Microprocessor, 32-Bit, 20MHz, CMOS, PQFP100, 14 X 20 MM, 1.40 MM HEIGHT, TQFP-100; CategoryThe embedded processor and controller Microcontrollers and processors; File Size296KB，38 Pages; ManufacturerIDT (Integrated Device Technology)

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79RV3081E20PFB Overview

RISC Microprocessor, 32-Bit, 20MHz, CMOS, PQFP100, 14 X 20 MM, 1.40 MM HEIGHT, TQFP-100

79RV3081E20PFB Parametric

Parameter Name	Attribute value
Is it lead-free?	Contains lead
Is it Rohs certified?	incompatible
Maker	IDT (Integrated Device Technology)
Parts packaging code	QFP
package instruction	LQFP, QFP100,.63SQ,20
Contacts	100
Reach Compliance Code	not_compliant
ECCN code	3A001.A.2.C
Address bus width	32
bit size	32
boundary scan	NO
maximum clock frequency	50 MHz
External data bus width	32
Format	FLOATING POINT
Integrated cache	YES
JESD-30 code	R-PQFP-G100
JESD-609 code	e0
length	20 mm
low power mode	YES
Humidity sensitivity level	3
Number of terminals	100
Maximum operating temperature	125 °C
Minimum operating temperature	-55 °C
Package body material	PLASTIC/EPOXY
encapsulated code	LQFP
Encapsulate equivalent code	QFP100,.63SQ,20
Package shape	RECTANGULAR
Package form	FLATPACK, LOW PROFILE
Peak Reflow Temperature (Celsius)	240
power supply	3.3 V
Certification status	Not Qualified
Filter level	MIL-STD-883 Class B
Maximum seat height	1.6 mm
speed	20 MHz
Maximum slew rate	375 mA
Maximum supply voltage	3.465 V
Minimum supply voltage	3.135 V
Nominal supply voltage	3.3 V
surface mount	YES
technology	CMOS
Temperature level	MILITARY
Terminal surface	Tin/Lead (Sn85Pb15)
Terminal form	GULL WING
Terminal pitch	0.65 mm
Terminal location	QUAD
Maximum time at peak reflow temperature	20
width	14 mm
uPs/uCs/peripheral integrated circuit type	MICROPROCESSOR, RISC
Base Number Matches	1

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IDT79R3081 RISController

MILITARY AND COMMERCIAL TEMPERATURE RANGES

Integrated Device Technology, Inc.

IDT79R3081

RISController

™

with FPA

IDT 79R3081™ , 79R3081E

IDT 79RV3081, 79RV3081E

FEATURES

• Instruction set compatible with IDT79R3000A, R3041,

R3051, and R3071 RISC CPUs

• High level of integration minimizes system cost

— R3000A Compatible CPU

— R3010A Compatible Floating Point Accelerator

— Optional R3000A compatible MMU

— Large Instruction Cache

— Large Data Cache

— Read/Write Buffers

• 43VUPS at 50MHz

— 13MFlops

• Flexible bus interface allows simple, low cost designs

• Optional 1x or 2x clock input

• 20 through 50MHz operation

• "V" version operates at 3.3V

• 50MHz at 1x clock input and 1/2 bus frequency only

• Large on-chip caches with user configurability

— 16kB Instruction Cache, 4kB Data Cache

— Dynamically configurable to 8kB Instruction Cache,

8kB Data Cache

— Parity protection over data and tag fields

• Low cost 84-pin packaging

• Superset pin- and software-compatible with R3051, R3071

• Multiplexed bus interface with support for low-cost, low-

speed memory systems with a high-speed CPU

• On-chip 4-deep write buffer eliminates memory write stalls

• On-chip 4-deep read buffer supports burst or simple block

reads

• On-chip DMA arbiter

• Hardware-based Cache Coherency Support

• Programmable power reduction mode

• Bus Interface can operate at half-processor frequency

R3081 BLOCK DIAGRAM

ClkIn

Clock Generator

Unit/Clock Doubler

Master Pipeline Control

System Control

Coprocessor

(CP0)

Exception/Control

Registers

Memory Management

Registers

Int(5:0)

BrCond(3:2,0)

Integer

CPU Core

General Registers

(32 x 32)

ALU

Shifter

Mult/Div Unit

Address Adder

PC Control

Virtual Address

FP Interrupt

Floating Point

Coprocessor

(CP1)

(16 x 64)

Exponent Unit

Add Unit

Divide Unit

Multiply Unit

Exception/Control

Translation

Lookaside Buffer

(64 entries)

Physical Address Bus

Data Bus

Configurable

Data

Cache

(4kB/8kB)

Configurable

Instruction

Cache

(16kB/8kB)

Data Bus

Parity

Generator

4-deep

Read

Buffer

R3051 Superset Bus Interface Unit

4-deep

Write

Buffer

DMA

Arbiter

BIU

Control

Coherency

Logic

Address/

Data

DMA

Ctrl

Rd/Wr

Ctrl

SysClk

Invalidate

Control

2889 drw 01

The IDT logo is a registered trademark, and RISController, R3041, R3051, R3052, R3071, R3081, R3720, R4400, R4600, IDT/kit, and IDT/sim are trademarks of Integrated Device Technology, Inc.

MILITARY AND COMMERCIAL TEMPERATURE RANGES

Integrated Device Technology, Inc.

SEPTEMBER 1995

DSC-9064/4

5.5

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