82802AC datasheet(7/53 Pages) INTEL

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Intel

® 82802AB/AC Firmware Hub

Datasheet

Intel® 82802AB/AC Firmware Hub

(FWH)

Product Features

§ Intel platform compatability

 Enables security-enhanced platform

infrastructure; facilitates option to remove ISA.

§ Firmware hub hardware interface mode

 5-Signal communication interface supporting

byte-at-a-time reads and writes

 Register-based read and write protection for

each code/data storage block

 Hardware write protect pins for the top boot

block and the remaining code/data storage

blocks

 5 Additional GPIs for platform design

flexibility

 Contains a hardware Random Number

Generator (RNG) for enhancing platform

security

 Integrated Command User Interface (CUI) for

requesting access to locking, programming, and

erasing options. The CUI also handles requests

for data residing in status, ID, and block-lock

registers.

 Operates with 33-MHz PCI clock and

3.3 V I/O.

§ Industry-standard packages

(40L TSOP or 32L PLCC)

§ Two configurable interfaces

 Firmware hub interface for platform

operation

 Address/Address-Multiplexed (A/A Mux)

interface for programming during

manufacturing

§ 4 or 8 Mbits of flash memory for platform

code/data nonvolatile storage

 Symmetrically blocked, 64-KB memory

sections

 Available in 8-Mbit (Intel

® 82802AC) and 4-

Mbit (Intel® 82802AB) densities

 Automated byte program and block erase via

an integrated Write State Machine (WSM)

§ Address/Address-Multiplexed (A/A Mux)

interface/mode

 11-Pin multiplexed address and 8-pin data

I/O interface

 Supports fast on-board or out-of-system

programming for manufacturing

§ Case temprature operating range

§ Power supply specifications

 Vcc: 3.3 V ± 0.3 V

 Vpp: 3.3 V and 12 V for fast programming,

(80 hours maximum)

The Intel® 82802 (FWH) firmware hub may contain design defects or errors known as errata that may cause the products to

deviate from published specifications. Current characterized errata are available upon request.

82802AC Datasheet(PDF) 7 Page - Intel Corporation

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