參數(shù)資料
型號(hào)： LA4128V-75TN144E
廠商： Lattice Semiconductor Corporation
文件頁(yè)數(shù)： 4/42頁(yè)
文件大?。?/td> 0K
描述： IC CPLD 128MACROCELLS 144TQFP
標(biāo)準(zhǔn)包裝： 60
系列： LA-ispMACH
可編程類型： 系統(tǒng)內(nèi)可編程
最大延遲時(shí)間 tpd(1)： 7.5ns
電壓電源 - 內(nèi)部： 3 V ~ 3.6 V
宏單元數(shù)： 128
輸入/輸出數(shù)： 96
工作溫度： -40°C ~ 125°C
安裝類型： 表面貼裝
封裝/外殼： 144-LQFP
供應(yīng)商設(shè)備封裝： 144-TQFP（20x20）
包裝： 托盤(pán)
Lattice Semiconductor
LA-ispMACH 4000V/Z Automotive Family Data Sheet
12
The zero power LA-ispMACH 4000Z is based on the 1.8V ispMACH 4000C family. With innovative circuit design
changes, the LA-ispMACH 4000Z family is able to achieve the industry’s “l(fā)owest static power”.
IEEE 1149.1-Compliant Boundary Scan Testability
All LA-ispMACH 4000V/Z automotive devices have boundary scan cells and are compliant to the IEEE 1149.1
standard. This allows functional testing of the circuit board on which the device is mounted through a serial scan
path that can access all critical logic notes. Internal registers are linked internally, allowing test data to be shifted in
and loaded directly onto test nodes, or test node data to be captured and shifted out for verication. In addition,
these devices can be linked into a board-level serial scan path for more board-level testing. The test access port
operates with an LVCMOS interface that corresponds to the power supply voltage.
I/O Quick Conguration
To facilitate the most efcient board test, the physical nature of the I/O cells must be set before running any continu-
ity tests. As these tests are fast, by nature, the overhead and time that is required for conguration of the I/Os’
physical nature should be minimal so that board test time is minimized. The LA-ispMACH 4000V/Z automotive fam-
ily of devices allows this by offering the user the ability to quickly congure the physical nature of the I/O cells. This
quick conguration takes milliseconds to complete, whereas it takes seconds for the entire device to be pro-
grammed. Lattice's ispVM System programming software can either perform the quick conguration through the
PC parallel port, or can generate the ATE or test vectors necessary for a third-party test system.
IEEE 1532-Compliant In-System Programming
Programming devices in-system provides a number of signicant benets including: rapid prototyping, lower inven-
tory levels, higher quality and the ability to make in-eld modications. The LA-ispMACH 4000V/Z automotive
devices provide In-System Programming (ISP) capability through the Boundary Scan Test Access Port. This
capability has been implemented in a manner that ensures that the port remains complaint to the IEEE 1149.1
standard. By using IEEE 1149.1 as the communication interface through which ISP is achieved, users get the ben-
et of a standard, well-dened interface. All LA-ispMACH 4000V/Z automotive devices are also compliant with the
IEEE 1532 standard.
The LA-ispMACH 4000V/Z automotive devices can be programmed across the commercial temperature and volt-
age range. The PC-based Lattice software facilitates in-system programming of LA-ispMACH 4000V/Z automotive
devices. The software takes the JEDEC le output produced by the design implementation software, along with
information about the scan chain, and creates a set of vectors used to drive the scan chain. The software can use
these vectors to drive a scan chain via the parallel port of a PC. Alternatively, the software can output les in for-
mats understood by common automated test equipment. This equipment can then be used to program LA-
ispMACH 4000V/Z automotive devices during the testing of a circuit board.
User Electronic Signature
The User Electronic Signature (UES) allows the designer to include identication bits or serial numbers inside the
device, stored in E
2CMOS memory. The LA-ispMACH 4000V/Z automotive device contains 32 UES bits that can be
congured by the user to store unique data such as ID codes, revision numbers or inventory control codes.
Security Bit
A programmable security bit is provided on the LA-ispMACH 4000V/Z automotive devices as a deterrent to unau-
thorized copying of the array conguration patterns. Once programmed, this bit defeats readback of the pro-
grammed pattern by a device programmer, securing proprietary designs from competitors. Programming and
verication are also defeated by the security bit. The bit can only be reset by erasing the entire device.
Hot Socketing
The LA-ispMACH 4000V/Z automotive devices are well-suited for applications that require hot socketing capability.
Hot socketing a device requires that the device, during power-up and down, can tolerate active signals on the I/Os
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