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CY37512V: Description5V, 3.3V, ISR™ High-Performance CPLDs; File Size2MB，62 Pages; ManufacturerCypress Semiconductor

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CY37512V Overview

5V, 3.3V, ISR™ High-Performance CPLDs

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Ultra37000 CPLD Family

5V, 3.3V, ISR™ High-Performance CPLDs

Features

• In-System Reprogrammable™ (ISR™) CMOS CPLDs

— JTAG interface for reconfigurability

— Design changes do not cause pinout changes

— Design changes do not cause timing changes

• High density

— 32 to 512 macrocells

— 32 to 264 I/O pins

— Five dedicated inputs including four clock pins

• Simple timing model

— No fanout delays

— No expander delays

— No dedicated vs. I/O pin delays

— No additional delay through PIM

— No penalty for using full 16 product terms

•

— No delay for steering or sharing product terms

3.3V and 5V versions

PCI-compatible

[1]

Programmable bus-hold capabilities on all I/Os

Intelligent product term allocator provides:

— 0 to 16 product terms to any macrocell

— Product term steering on an individual basis

— Product term sharing among local macrocells

• Flexible clocking

— Four synchronous clocks per device

— Product term clocking

— Clock polarity control per logic block

• Consistent package/pinout offering across all densities

— Simplifies design migration

— Same pinout for 3.3V and 5.0V devices

• Packages

— 44 to 400 leads in PLCC, CLCC, PQFP, TQFP, CQFP,

BGA, and Fine-Pitch BGA packages

General Description

The Ultra37000™ family of CMOS CPLDs provides a range of

high-density programmable logic solutions with unparalleled

system performance. The Ultra37000 family is designed to

bring the flexibility, ease of use, and performance of the 22V10

to high-density CPLDs. The architecture is based on a number

of logic blocks that are connected by a Programmable Inter-

connect Matrix (PIM). Each logic block features its own

product term array, product term allocator, and 16 macrocells.

The PIM distributes signals from the logic block outputs and all

input pins to the logic block inputs.

All of the Ultra37000 devices are electrically erasable and In-

System Reprogrammable (ISR), which simplifies both design

and manufacturing flows, thereby reducing costs. The ISR

feature provides the ability to reconfigure the devices without

having design changes cause pinout or timing changes. The

Cypress ISR function is implemented through a JTAG-

compliant serial interface. Data is shifted in and out through

the TDI and TDO pins, respectively. Because of the superior

routability and simple timing model of the Ultra37000 devices,

ISR allows users to change existing logic designs while simul-

taneously fixing pinout assignments and maintaining system

performance.

The entire family features JTAG for ISR and boundary scan,

and is compatible with the PCI Local Bus specification,

meeting the electrical and timing requirements. The

Ultra37000 family features user programmable bus-hold

capabilities on all I/Os.

Ultra37000 5.0V Devices

The Ultra37000 devices operate with a 5V supply and can

support 5V or 3.3V I/O levels. V

CCO

connections provide the

capability of interfacing to either a 5V or 3.3V bus. By

connecting the V

CCO

pins to 5V the user insures 5V TTL levels

on the outputs. If V

CCO

is connected to 3.3V the output levels

meet 3.3V JEDEC standard CMOS levels and are 5V tolerant.

These devices require 5V ISR programming.

Ultra37000V 3.3V Devices

Devices operating with a 3.3V supply require 3.3V on all V

CCO

pins, reducing the device’s power consumption. These

devices support 3.3V JEDEC standard CMOS output levels,

and are 5V-tolerant. These devices allow 3.3V ISR

programming.

Note:

1. Due to the 5V-tolerant nature of 3.3V device I/Os, the I/Os are not clamped to V

, PCI V

= 2V.

Cypress Semiconductor Corporation

Document #: 38-03007 Rev. *C

•

3901 North First Street

•

San Jose

CA 95134

•

408-943-2600

Revised July 7, 2003

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