The Platform Manager devices support as many timers as you need; there are 640 LUTs of FPGA fabric to build custom timers. The timers in the FPGA are called FTimers, Logi-Builder will set them up automatically and use a slow timer from the CPLD OUT16 as a clock.
See Link: Reference Design, Using Long Timers in the Platform Manager.
The following Reference Design explains how to use timers in the Platform Manager.
www.latticesemi.com/documents/RD1079.pdf