3.3 AT21CS01 DC Characteristics⁽¹⁾


Parameter	Symbol	Minimum	Maximum	Units	Test Conditions
Pull-up Voltage	V_PUP	1.7	3.6	V	High-Speed mode
Pull-up Voltage	V_PUP	2.7	3.6	V	Standard Speed mode
Pull-up Resistance	R_PUP	130	200	Ω	V_PUP = 1.7V
		0.2	1.8	kΩ	V_PUP = 2.7V
		0.33	4	kΩ	V_PUP = 3.6V
Active Current, Read	I_A1	—	0.3	mA	V_PUP = 3.6V SI/O = V_PUP
Active Current, Write	I_A2	—	0.5	mA	V_PUP = 3.6V
Standby Current	I_SB	—	1.5	µA	V_PUP = 1.8V⁽²⁾ SI/O = V_PUP, Industrial
		—	3	µA	V_PUP = 1.8V⁽²⁾ SI/O = V_PUP, Extended
		—	2.5	µA	V_PUP = 3.6V, Industrial
		—	4	µA	V_PUP = 3.6V, Extended
Input Low Level^(2,3)	V_IL	–0.6	0.5	V
Input High Level^(2,3)	V_IH	V_PUP x 0.7	V_PUP + 0.5	V
SI/O Hysteresis^(2,3,4)	V_HYS	0.128	1.17	V
Output Low Level	V_OL	0	0.4	V	I_OL = 4 mA
Bus Capacitance	C_BUS	—	1000	pF

Note:

Parameters are applicable over the operating range in DC and AC Operating Range, unless otherwise noted.
This parameter is characterized but is not 100% tested in production.
V_IH, V_IL and V_HYS are functions of the internal supply voltage, which is a function of V_PUP, R_PUP, C_BUS and timing used. Use of a lower V_PUP, higher R_PUP, higher C_BUS and shorter t_RCV creates lower V_IH, V_IL and V_HYS values.
Once V_IH is crossed on a rising edge of SI/O, the voltage on SI/O must drop at least by V_HYS to be detected as a logic ‘0’.

3.3 AT21CS01 DC Characteristics(1)