SPI

Figure 1. SPI - Timing Requirements in Host Mode

Figure 2. SPI - Timing Requirements in Client Mode

Table 1. SPI - Timing Characteristics⁽¹⁾
Symbol	Description	Condition	Min.	Typ.	Max.	Unit
f_SCK	SCK clock frequency	Host	-	-	10	MHz
t_SCK	SCK period	Host	100	-	-	ns
t_SCKW	SCK high/low width	Host	-	0.5 × SCK	-	ns
t_SCKR	SCK rise time	Host	-	2.7	-	ns
t_SCKF	SCK fall time	Host	-	2.7	-	ns
t_MIS	MISO setup to SCK	Host	-	10	-	ns
t_MIH	MISO hold after SCK	Host	-	10	-	ns
t_MOS	MOSI setup to SCK	Host	-	0.5 × SCK	-	ns
t_MOH	MOSI hold after SCK	Host	-	1.0	-	ns
f_SSCK	Client SCK clock frequency	Client	-	-	5	MHz
t_SSCK	Client SCK period	Client	4 × t _{CLK_PER}	-	-	ns
t_SSCKW	SCK high/low width	Client	2 × t _{CLK_PER}	-	-	ns
t_SSCKR	SCK rise time	Client	-	-	1600	ns
t_SSCKF	SCK fall time	Client	-	-	1600	ns
t_SIS	MOSI setup to SCK	Client	3.0	-	-	ns
t_SIH	MOSI hold after SCK	Client	t_{_{CLK_PER}}	-	-	ns
t_SSS	SS setup to SCK	Client	21	-	-	ns
t_SSH	SS hold after SCK	Client	20	-	-	ns
t_SOS	MISO setup to SCK	Client	-	8.0	-	ns
t_SOH	MISO hold after SCK	Client	-	13	-	ns
t_SOSS	MISO setup after SS low	Client	-	11	-	ns
t_SOSH	MISO hold after SS low	Client	-	8.0	-	ns

Note:

ATtiny1624/1626/1627