Datasheet > ATF1502AS-7JX44-T

ATF1502AS-7JX44-T

更新时间： 2022-12-01 22:24:20

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ATF1502AS-7JX44-T 数据手册

Security Fuse Usage

A single fuse is provided to prevent unauthorized copying of the ATF1502AS(L) fuse patterns. Once

programmed, fuse verify is inhibited; however, the 16-bit User Signature remains accessible.

Programming

ATF1502AS(L) devices are In-System Programmable (ISP) devices utilizing the 4-pin JTAG protocol. This

capability eliminates package handling normally required for programming and facilitates rapid design iterations

and field changes.

Atmel provides ISP hardware and software to allow programming of the ATF1502AS(L) via the PC. ISP is

performed by using either a download cable, a comparable board tester, or a simple microprocessor interface.

When using the ISP hardware or software to program the ATF1502AS(L) devices, four I/O pins must be

reserved for the JTAG interface. However, the logic features that the macrocells have associated with these I/O

pins are still available to the design for burned logic functions.

To facilitate ISP programming by the Automated Test Equipment (ATE) vendors, Serial Vector Format (SVF)

files can be created by Atmel-provided software utilities.

ATF1502AS(L) devices can also be programmed using standard third-party programmers. With a third-party

programmer, the JTAG ISP port can be disabled, thereby allowing four additional I/O pins to be used for logic.

Contact your local Atmel representatives or Atmel PLD applications for details.

10. ISP Programming Protection

The ATF1502AS(L) has a special feature which locks the device and prevents 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 previous state of the input and I/O PMS during

programming.

All ATF1502AS(L) devices are initially shipped in the erased state, thereby making them ready to use for ISP.

Note: For more information refer to the “Designing for In-System Programmability with Atmel CPLDs”

application note.

ATF1502AS(L) [DATASHEET]

Atmel-0995L-CPLD-ATF1502AS(L)-Datasheet_032014

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型号	品牌	描述	获取价格	数据表
ATF1502AS-7QC44	ATMEL	High Performance E2PROM CPLD	获取价格
ATF1502ASL	ATMEL	Highperformance EEPROM CPLD	获取价格
ATF1502ASL	MICROCHIP	Low-power, Vcc 5V, 32 MC, ISP, Green package, CPLD	获取价格
ATF1502ASL-20AC44	ATMEL	High Performance E2PROM CPLD	获取价格
ATF1502ASL-20AI44	ATMEL	High Performance E2PROM CPLD	获取价格
ATF1502ASL-20AJ44	ATMEL	EE PLD, 20ns, PQFP44, 1 MM HEIGHT, PLASTIC, TQFP-44	获取价格