66.12.3.2 SMC IOSET2 Write Timings

Table 66-50. SMC IOSET2 Write Signals - NWE Controlled (WRITE_MODE = 1)
Symbol	Parameter	Min		Unit
Symbol	Power supply	1.8V	3.3V	Unit
HOLD or NO HOLD SETTINGS (nwe hold ≠ 0, nwe hold = 0)
SMC₁₅	Data Out Valid before NWE High	nwe pulse × t_CPMCK	nwe pulse × t_CPMCK	ns
SMC₁₆	NWE Pulse Width	nwe pulse × t_CPMCK	nwe pulse × t_CPMCK	ns
SMC₁₇	NBS0/A0 NBS1, NBS2/A1, NBS3, A2–A25 valid before NWE low	nwe setup × t_CPMCK	nwe pulse × t_CPMCK	ns
SMC₁₈	NCS low before NWE high	(nwe setup - ncs rd setup + nwe pulse) × t_CPMCK	(nwe setup - ncs rd setup + nwe pulse) × t_CPMCK	ns
HOLD SETTINGS (nwe hold ≠ 0)
SMC₁₉	NWE High to Data OUT, NBS0/A0 NBS1, NBS2/A1, NBS3, A2–A25 change	nwe hold × t_CPMCK	nwe hold × t_CPMCK	ns
SMC₂₀	NWE High to NCS Inactive⁽¹⁾	(nwe hold - ncs wr hold) × t_CPMCK	(nwe hold - ncs wr hold) × t_CPMCK	ns
NO HOLD SETTINGS (nwe hold = 0)
SMC₂₁	NWE High to Data OUT, NBS0/A0 NBS1, NBS2/A1, NBS3, A2–A25, NCS change⁽¹⁾	1.2	0.6	ns

Note: hold length = total cycle duration - setup duration - pulse duration. “hold length” is for “ncs wr hold length” or “NWE hold length”.

Table 66-51. SMC IOSET2 Write NCS Controlled (WRITE_MODE = 0)
Symbol	Parameter	Min		Unit
Symbol	Power supply	1.8V	3.3V	Unit
SMC₂₂	Data Out Valid before NCS High	ncs wr pulse × t_CPMCK	ncs wr pulse × t_CPMCK	ns
SMC₂₃	NCS Pulse Width	SMC₁₄	SMC₁₄	ns
SMC₂₄	NBS0/A0 NBS1, NBS2/A1, NBS3, A2–A25 valid before NCS low	ncs wr setup × t_CPMCK	ncs wr setup × t_CPMCK	ns
SMC₂₅	NWE low before NCS high	(ncs wr setup - nwe setup + ncs pulse) × t_CPMCK	(ncs wr setup - nwe setup + ncs pulse) × t_CPMCK	ns
SMC₂₆	NCS High to Data Out, NBS0/A0, NBS1, NBS2/A1, NBS3, A2–A25, change	ncs wr hold × t_CPMCK	ncs wr hold × t_CPMCK	ns
SMC₂₇	NCS High to NWE Inactive	(ncs wr hold - nwe hold) × t_CPMCK	(ncs wr hold - nwe hold) × t_CPMCK	ns

Figure 66-10. SMC Timings - NCS Controlled Read and Write

Figure 66-11. SMC Timings - NRD Controlled Read and NWE Controlled Write

SAMA5D2 Series