米6体育平台手机版

ZHCSQB9H April 2006 – March 2022 PCA9536

PRODUCTION DATA

6.6 I²C Interface Timing Requirements

over recommended operating free-air temperature range (unless otherwise noted) (see Figure 7-1)

		MIN	MAX	UNIT
Standard Mode
f_scl	I²C clock frequency	0	100	kHz
t_sch	I²C clock high time	4		μs
t_scl	I²C clock low time	4.7		μs
t_sp	I²C spike time		50	ns
t_sds	I²C serial-data setup time	250		ns
t_sdh	I²C serial-data hold time	0		ns
t_icr	I²C input rise time		1000	ns
t_icf	I²C input fall time		300	ns
t_ocf	I²C output fall time, 10-pF to 400-pF bus		300	ns
t_buf	I²C bus free time between Stop and Start	4.7		μs
t_sts	I²C Start or repeated Start condition setup time	4.7		μs
t_sth	I²C Start or repeated Start condition hold time	4		μs
t_sps	I²C Stop condition setup time	4		μs
t_vd(data)	Valid data time, SCL low to SDA output valid		3.45	μs
t_vd(ack)	Valid data time of ACK condition, ACK signal from SCL low to SDA (out) low		3.45	μs
C_b	I²C bus capacitive load		400	pF
Fast Mode
f_scl	I²C clock frequency	0	400	kHz
t_sch	I²C clock high time	0.6		μs
t_scl	I²C clock low time	1.3		μs
t_sp	I²C spike time		50	ns
t_sds	I²C serial-data setup time	100		ns
t_sdh	I²C serial-data hold time	0		ns
t_icr	I²C input rise time	20⁽¹⁾	300	ns
t_icf	I²C input fall time	20x(Vdd/5.5V)⁽¹⁾	300	ns
t_ocf	I²C output fall time, 10-pF to 400-pF bus	20x(Vdd/5.5V)⁽¹⁾	300	ns
t_buf	I²C bus free time between Stop and Start	1.3		μs
t_sts	I²C Start or repeated Start condition setup time	0.6		μs
t_sth	I²C Start or repeated Start condition hold time	0.6		μs
t_sps	I²C Stop condition setup time	0.6		μs
t_vd(data)	Valid data time, SCL low to SDA output valid		0.9	μs
t_vd(ack)	Valid data time of ACK condition, ACK signal from SCL low to SDA (out) low		0.9	μs
C_b	I²C bus capacitive load		400	pF

(1) C_b = Total capacitive load of one bus in pF