Upper program-space wait-state bits. A value in the wait-state generator control register (WSGR) that determines the number of wait states applied to reads from and writes to off-chip upper programme space (addresses 8000h–FFFFh). PSUWS is not available on the ’C209; instead, see program-space wait-state bit (PSWS). On other ’C2xx devices, PSUWS is bits 5–3 of the WSGR. See also PSLWS.