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In this paper, we present a Maude-based tool for embedded systems specification, performance estimation and formal verification of some properties. In our case, the application is modeled as a network of concurrent tasks with coarse grained actions (CGAs) that communicate with each other via abstract channels following Kahn process networks (KPNs) model of computation semantics. In order to achieve high level performance estimation, the hardware architecture should be abstracted too. Consequently, each hardware component of the architecture is parameterized by a set of abstract parameters matching the abstraction level of the application.