NR8576AA Datasheet, PDF (5/10 Pages) Nippon Precision Circuits Inc – Real-time Clock Modules

NR8576 Series
AC Characteristics
V_DD = 3.0 V, V_SS = 0 V, T_a = 25 °C unless otherwise noted
Parameter
CLK clock period
CLK LOW-level pulsewidth
CLK HIGH-level pulsewidth
CE setup time
CE hold time
CE enable time
Write data setup time
Write data hold time
WR setup time
WR hold time
DATA output delay time
DATA output floating time
Clock rise time
Clock fall time
FOUT rise time (C_L = 30 pF)
FOUT fall time (C_L = 30 pF)
Disable time (C_L = 30 pF)
Enable time (C_L = 30 pF)
FOUT duty cycle (C_L = 30 pF)
Wait time
Symbol
t_CLK
t_CLKL
t_CLKH
t_CES
t_CEH
t_CE
t_SD
t_HD
t_WRS
t_WRH
t_DATD
t_DZ
t_r1
t_f1
t_r2
t_f2
t_HZ
t_LZ
t_ZH
t_ZL
Duty
t_RCV
Rating
V_DD = 5 V ± 10%
V_DD = 3 V ± 10%
Unit
min
max
min
max
0.75
7800
1.5
7800
µs
0.375
3900
0.75
3900
µs
0.375
3900
0.75
3900
µs
0.375
3900
0.75
3900
µs
0.375
–
0.75
–
µs
–
0.9
–
0.9
s
0.1
–
0.2
–
µs
0.1
–
0.1
–
µs
100
–
100
–
ns
100
–
100
–
ns
–
0.2
–
0.4
µs
–
0.1
–
0.2
µs
–
50
–
100
ns
–
50
–
100
ns
–
100
–
200
ns
–
100
–
200
ns
–
100
–
200
ns
–
100
–
200
ns
–
100
–
200
ns
–
100
–
200
ns
40
60
40
60
%
0.95
–
1.9
–
µs
NIPPON PRECISION CIRCUITS—5