DS1390U-18 Maxim Integrated Products, DS1390U-18 Datasheet - Page 8

• Manufacturer Part Number: DS1390U-18
• Description: Real Time Clock Low-Voltage SPI RTC with Trickle Charger
• Manufacturer: Maxim Integrated Products

Specifications of DS1390U-18

• Function: Clock, Calendar, Alarm, Trickle Charger
• Supply Voltage (max): 1.89 V
• Supply Voltage (min): 1.71 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Rtc Bus Interface: Serial
• Package / Case: uSOP
• Time Format: HH:MM:SS:hh

Low-Voltage SPI/3-Wire RTCs with
Trickle Charger
POWER-UP/POWER-DOWN CHARACTERISTICS
(T
Figure 5. Power-Up/Down Timing
Figure 6. Pushbutton Reset Timing
8
V
(V
V
V
V
V
A
CC
CC
PF(MIN)
CC
PF(MAX)
CC
RST
= -40°C to +85°C) (Figures 5, 6)
_____________________________________________________________________
Detect to Recognize Inputs
Fall Time; V
Rise Time; V
Rising)
OUTPUTS
PARAMETER
INPUTS
V
RST
V
PF(MAX)
PF(MIN)
PF(MAX)
V
PF(MIN)
CC
PB
DB
to
to
RECOGNIZED
VALID
SYMBOL
t F
t
RST
t
t
R
F
t
RST
V
PF
(Note 17)
CONDITIONS
DON'T CARE
HIGH IMPEDANCE
V
PF
MIN
300
0
t RST
t R
TYP
160
RECOGNIZED
t RPU
VALID
MAX
200
UNITS
ms
µs
µs