5.3.3.2 Data Communication Timing

Table 5-5. Data Communication TimingUnless otherwise indicated, these values are applicable over the specified operating range from T_A = -40℃ to +105℃, V_CC = +1.65V to +5.5V, C_L = 100 pF.
Parameter and Condition⁽¹⁾	Sym.	Frame Type	Min.	Max.	Units
Bit Frame Duration^{(6, 7)}	t_BIT	Input and Output Bit Frame	t_LOW0 + t_PUP⁽²⁾ + t_RCV	75	µs
SI/O High Time for Start/Stop Condition⁽⁶⁾	t_HTSS	Input Bit Frame	150	—	µs
SI/O Low Time, Logic ‘`0`’ Condition⁽⁶⁾	t_LOW0	Input Bit Frame	6	16	µs
SI/O Low Time, Logic ‘`1`’ Condition⁽⁶⁾	t_LOW1	Input Bit Frame	1	2	µs
Host SI/O Low Time during Read⁽⁶⁾	t_RD	Output Bit Frame	1	2 – t_PUP⁽²⁾	µs
Host Read Strobe Time⁽⁶⁾	t_MRS	Output Bit Frame	t_RD + t_PUP⁽²⁾	2	µs
Data Output Hold Time (Logic ‘`0`’)⁽⁷⁾	t_HLD0	Output Bit Frame	2	6	µs
Client Recovery Time^{(6, 7)}	t_RCV	Input and Output Bit Frame	4^{(3, 4)}	—	µs
Glitch Filter⁽⁵⁾	t_{IGNORE_SWI}	Input Bit Frame	50	500	ns

Note:

AC measurement conditions for the table above:
- All parameters are production tested unless otherwise noted.
- Loading capacitance on SI/O: 100 pF
- V_PUP: Applied at minimum and maximum V_CC
t_PUP is the time required to be pulled up from V_IL to V_IH when the SI/O line is released. This value is application-specific and is a function of the loading capacitance on the SI/O line as well as the R_PUP chosen.
The system designer must select a combination of R_PUP, C_BUS and t_BIT such that the minimum t_RCV is satisfied. The relationship of t_RCV within the bit frame can be expressed by the following formula: t_BIT = t_LOW0 + t_PUP + t_RCV.
Microchip’s AT21CS11 supports 2 µs.
The glitch filter is assured to suppress all pulses below the min value but may suppress values as great as the max value over all process, voltage and temperature conditions.
The host system must ensure the parameter timing values are met.
By design, the ECC204-TFLXAUTH ensures this timing parameter is met.