Lattice MachXO3L低成本高密度I-O扩展解决方案

Lattice公司的MachXO3L是低成本高密度I-O扩展器,有C版本和E版本两种器件, C版本工作电压3.3V或2.5V, E版本工作电压1.2V,封装尺寸从2.5 x 2.5 mm WLCSP 到17 x 17 mm caBGA,多达335个I/O引脚,主要用在消费类电子,计算与存储,无线通信,工业控制和汽车电子.本文介绍了MachXO3L系列主要特性, MachXO器件框图和MachXO3L-4300器件框图,以及MachXO3L分接板评估套件主要特性,框图和电路图.
The MachXO3L devices are available in two versions C and E with two speed grades: -5 and -6, with -6 being the fastest. C devices have an internal linear voltage regulator which supports external VCC supply voltages of 3.3 V or 2.5 V. E devices only accept 1.2 V as the external VCC supply voltage. With the exception of power supply voltage both C and E are functionally compatible with each other. The MachXO3L PLDs are available in a broad range of advanced halogen-free packages ranging from the space saving 2.5 x 2.5 mm WLCSP to the 17 x 17 mm caBGA. MachXO3L devices support density migration within the same package. Table 1-1 shows the LUT densities, package and I/O options, along with other key parameters. The MachXO3L devices offer enhanced I/O features such as drive strength control, slew rate control, PCI compatibility, bus-keeper latches, pull-up resistors, pull-down resistors, open drain outputs and hot socketing. Pull-up, pull-down and bus-keeper features are controllable on a “per-pin” basis. A user-programmable internal oscillator is included in MachXO3L devices. The clock output from this oscillator may be divided by the timer/counter for use as clock input in functions such as LED control, key-board scanner and similar state machines.
The MachXO3L devices also provide flexible, reliable and secure configuration from on-chip NVCM. These devices can also configure themselves from external SPI Flash or be configured by an external master through the JTAG test access port or through the I2C port. Additionally, MachXO3L devices support dual-boot capability (using exter-nal Flash memory) and remote fi...