X1243 Datasheet, PDF (16/18 Pages) Xicor Inc. – Real Time Clock/Calendar/Alarm with EEPROM

X1243
AC Specifications - T_A = -40˚C to +85˚C, V_CC = +2.7V to +5.5V, unless otherwise specified.
Symbol
f_SCL
t_IN⁽¹⁾
t_AA
t_BUF
t_LOW
t_HIGH
t_SU:STA
t_HD:STA
t_SU:DAT
t_HD:DAT
t_SU:STO
t_DH
t_R⁽¹⁾
t_F⁽¹⁾
Cb
Parameter
SCL Clock Frequency
Pulse width Suppression Time at inputs
SCL LOW to SDA Data Out Valid
Time the bus must be free before a new transmission
can start
Clock LOW Time
Clock HIGH Time
Start Condition Setup Time
Start Condition Hold Time
Data In Setup Time
Data In Hold Time
Stop Condition Setup Time
Data Output Hold Time
SDA and SCL Rise Time
SDA and SCL Fall Time
Capacitive load for each bus line
400kHz Option
Min
Max
0
400
50
0.1
0.9
1.3
1.3
0.6
0.6
0.6
100
0
0.6
50
20 +.1Cb⁽²⁾
300
20 +.1Cb⁽²⁾
300
400
Units
KHz
nS
µS
µS
µS
µS
µS
µS
nS
µS
µS
nS
nS
nS
pF
1. This parameter is periodically sampled and not 100% tested.
2. Cb = total capacitance of one bus line in pF.
Timing Diagrams
Bus Timing
SCL
t_SU:STA
SDA IN
SDA OUT
t_F
t_HIGH t_LOW
t_R
t_SU:DAT
t_HD:STA
t_HD:DAT
t_AA t_DH
t_SU:STO
t_BUF
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