MACH220-10/12/15/20

`68 Pins
`96 Macrocells
`10 ns tPD
`100 MHz fCNT
`56 Inputs with pull-up resistors
`48 Outputs
`96 Flip-flops; 4 clock choices
`8 "PAL26V12" blocks with buried macrocells
`Pin-compatible with MACH120 and MACH221

The MACH220 is a member of the high-performance EE CMOS MACH 2 device family. This device has approximately nine times the logic macrocell capability of the popular PAL22V10 without loss of speed.

The MACH220 consists of eight PAL blocks interconnected by a programmable switch matrix. The eight PAL blocks are essentially "PAL26V12" structures complete with product-term arrays, and programmable macrocells, including buried macrocells. The switch matrix connects the PAL blocks to each other and to all input pins, providing a high degree of connectivity between the fully-connected PAL blocks. This allows designs to be placed and routed efficiently.

The MACH220 has two kinds of macrocell: output and buried. The output macrocell provides registered, latched, or combinatorial outputs with programmable polarity. If a registered configuration is chosen, the register can be configured as D-type or T-type to help reduce the number of product terms. The register type decision can be made by the designer or by the software. All output macrocells can be connected to an I/O cell. If a buried macrocell is desired, the internal feedback path from the macrocell can be used, which frees up the I/O pin for use as an input.

The MACH220 has dedicated buried macrocells which, in addition to the capabilities of the output macrocell, also provide input registers for use in synchronizing signals and reducing setup time requirements