AB18X5-RTC Datasheet, PDF (27/37 Pages) Abracon Corporation – Baseline timekeeping features

AB18X5 Real-Time Clock with Power
Management Family
Date of Issue: October 16, 2014
3.0 x 3.0 mm
Page 27 of 37
Abracon Drawing #453568
Table 12: SPI AC Electrical Parameters
SYMBOL
f_SCL
t_LOW
t_HIGH
t_RISE
t_FALL
t_SU:NCE
t_HD:NCE
t_SU:CE
t_SU:SDI
t_HD:SDI
t_SU:SDO
t_HD:SDO
t_HZ
t_BUF
PARAMETER
SCL input clock frequency
Low period of SCL clock
High period of SCL clock
Rise time of all signals
Fall time of all signals
nCE low setup time to SCL
nCE hold time to SCL
nCE high setup time to SCL
SDI setup time
SDI hold time
SDO output delay from SCL
SDO output hold from SCL
SDO output Hi-Z from nCE
nCE high time before a new transmission
VCC
1.7V–3.6V
1.7V–3.6V
1.7V–3.6V
1.7V–3.6V
1.7V–3.6V
1.7V–3.6V
1.7V–3.6V
1.7V–3.6V
1.7V–3.6V
1.7V–3.6V
1.7V–3.6V
1.7V–3.6V
1.7V–3.6V
1.7V–3.6V
MIN
0.01
200
200
200
200
200
40
50
0
200
TYP
Revision: C
MAX
2
1
1
150
250
UNIT
MHz
ns
ns
µs
µs
ns
ns
ns
ns
ns
ns
ns
ns
ns