atf1504se ATMEL Corporation, atf1504se Datasheet - Page 10

• Manufacturer Part Number: atf1504se
• Description: Family Datasheet
• Manufacturer: ATMEL Corporation

Design
Software
Programming
ISP
Programming
Protection
Security Fuse
Usage
10
ATF15xxSE Family
Atmel ATF15xxSE Family fitters allow logic synthesis using a variety of high-level description
languages and formats. ATF15xxSE Family designs are supported by Atmel specific design
tools as well as by several third-party tools. Free conversion software is also offered for indus-
try standard devices. Check the Atmel web site or contact your authorized Atmel sales
representative for up-to-date design software information.
ATF15xxSE Family devices can be programmed using standard third-party programmers.
With third-party programmers, the JTAG ISP port can be disabled thereby allowing four addi-
tional I/O pins to be used for logic. Check the Atmel web site, contact your authorized Atmel
sales representative or Atmel PLD Applications for details of third-party programmers.
ATF15xxSE Family devices are in-system programmable (ISP) devices utilizing the 4-pin
JTAG protocol. This capability eliminates package handling normally required for program-
ming and facilitates rapid design iterations and field changes. Atmel provides ISP hardware
and software to allow programming of the ATF15xxSE Family via the PC. ISP is performed by
using either a download cable, a compatible board tester or a simple microprocessor interface.
It is most common to devote the JTAG pins to ISP, but it is possible to use ISP to program the
part through the JTAG pins, and set these four pins I/O pins. However, this will effectively dis-
able further ISP and the device will need to be erased on a programmer to re-enable ISP.
Contact Atmel PLD Applications by email at [e-mail] or call our Hotline at (408) 436-
4333 for details.
To allow ISP programming support by the Automated Test Equipment (ATE) vendors, Serial
Vector Format (SVF) files can be created by the Atmel ISP software. Conversion to other ATE
tester formats is also possible. Check the Atmel web site for up-to-date programming and soft-
ware support information.
The ATF15xxSE Family also incorporates a protection feature that locks the device and pre-
vents the inputs and I/O from driving if the programming process is interrupted for any reason.
The inputs and I/O default to high-Z state during such a condition. In addition the pin-keeper
option preserves the former state during device programming.
All ATF15xxSE Family devices are initially shipped in the erased state thereby making them
ready to use for ISP.
For more information refer to the “Designing for In-System Programmability with Atmel
CPLDs” application note.
A single fuse is provided to prevent unauthorized copying of the ATF15xxSE Family fuse pat-
terns. Once programmed, fuse verify is inhibited. However, the User Signature and device ID
remain accessible.
2401D–PLD–09/02