Abstract: The acquisition of Pseudo-Noise (PN) code is one of the essential technologies in Direct Sequence Spread Spectrum (DS/SS) communication. Conventional Parallel Matched Filter (CPMF) features in high acquisition speed but it will consume a large amount of hardware resource in the case of long PN code. This paper focuses on reducing the hardware consumption and proposes a novel matched filter architecture: Time Division Multiplex Matched Filter (TDMMF). With identical processing gain as CPMF, TDMMF can save the hardware consumption by 50, 75% and even more through reusing the shift registers, multipliers and accumulators. This makes the proposed TDMMF suitable for high speed acquisition of long PN code.