米6体育平台手机版_好二三四

ZHCSEZ2D January 2014 – October 2021 TCA9539-Q1

PRODUCTION DATA

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机械数据 (封装 | 引脚)

PW|24
- MPDS363A

散热焊盘机械数据 (封装 | 引脚)

订购信息

6.6 I²C Interface Timing Requirements

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

			MIN	MAX	UNIT
I²C BUS—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		4.7		µs
t_sth	I²C start or repeated start condition hold		4		µs
t_sps	I²C stop condition setup		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

			MIN	MAX	UNIT
I²C BUS—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	300	ns
t_icf	I²C input fall time		20 × (V_CC / 5.5 V)	300	ns
t_ocf	I²C output fall time	10 pF to 400 pF bus	20 × (V_CC / 5.5 V)	300	ns
t_buf	I²C bus free time between stop and start		1.3		µs
t_sts	I²C start or repeated start condition setup		0.6		µs
t_sth	I²C start or repeated start condition hold		0.6		µs
t_sps	I²C stop condition setup		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

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