DS12CR885 Datasheet, PDF (4/22 Pages) Maxim Integrated Products – RTC with Constant-Voltage Trickle Charger

RTC with Constant-Voltage Trickle Charger
AC ELECTRICAL CHARACTERISTICS
(V_CC = 2.97V to 3.63V, T_A = -40°C to +85°C.) (Note 1)
PARAMETER
Cycle Time
Pulse Width, DS Low or R/W High
Pulse Width, DS High or R/W Low
Input Rise and Fall
R/W Hold Time
R/W Setup Time Before DS
Chip-Select Setup Time Before
DS or R/W
Chip-Select Hold Time
Read-Data Hold Time
Write-Data Hold Time
Address Valid Time to AS Fall
Address Hold Time to AS Fall
Delay Time DS to AS Rise
Pulse Width AS High
Delay Time, AS to DS Rise
Output Data Delay Time from DS
or R/W
Data Setup Time
Reset Pulse Width
IRQ Release from DS
IRQ Release from RESET
SYMBOL
t_CYC
PW_EL
PW_EH
t_R, t_F
t_RWH
t_RWS
t_CS
t_CH
t_DHR
t_DHW
t_ASL
t_AHL
t_ASD
PW_ASH
t_ASED
t_DDR (Note 8)
t_DSW
t_RWL
t_IRDS
t_IRR
CONDITIONS
MIN TYP MAX UNITS
280
DC
ns
130
ns
90
ns
30
ns
0
ns
15
ns
8
ns
0
ns
5
55
ns
0
ns
30
ns
15
ns
15
ns
45
ns
55
ns
20
80
ns
70
ns
5
µs
0
2
µs
0
2
µs
4 _____________________________________________________________________