CS4235 Datasheet, PDF (7/94 Pages) Cirrus Logic – CrystalClear Low Cost ISA Audio System

CS4235
CrystalClear ^TM Low Cost ISA Audio System
Timing Parameters (T_A = 25 °C; VA, VD1, VDF1-VDF3 = +5 V; outputs loaded with 30 pF;
Input Levels: Logic 0 = 0 V, Logic 1 = VDF, Rise/Fall time = 2 ns; Input/Output reference levels = 2.5 V)
Parameter
E²PROM Timing (Note 1)
Symbol
Min
Max
Units
SCL Low to SDA Data Out Valid
tAA
0
3.5
µs
Start Condition Hold Time
t_HD:STA
4.0
-
µs
Clock Low Period
tLSCL
4.7
-
µs
Clock High Period
t_HSCL
4.0
-
µs
Start Condition Setup Time (for a Repeated Start Condition) tSU:STA
4.7
-
µs
Data In Hold Time
t_HD:DAT
0
-
µs
Data In Setup Time
tSU:DAT
250
-
ns
SDA and SCL Rise Time
(Note 7) tR
-
1
µs
SDA and SCL Fall Time
t_F
-
300
ns
Stop Condition Setup Time
tSU:STO
4.7
-
µs
Data Out Hold Time
tDH
0
-
ns
Notes 7. Rise time on SDA is determined by the capacitance of the SDA line with all connected gates and the
external pullup resistor required.
SCL
t _SU:STA
SDA (IN)
SDA (OUT)
tF
tHSCL tLSCL
tHD:STA tHD:DAT
tSU:DAT
t _AA
tDH
E²PROM 2-Wire Interface Timing
tR
t _SU:STO
DS252PP2
7