DS1689SN+ Maxim Integrated, DS1689SN+ Datasheet - Page 29

• Manufacturer Part Number: DS1689SN+
• Description: Real Time Clock
• Manufacturer: Maxim Integrated
• Series: DS1689, DS1693r

Specifications of DS1689SN+

• Rohs: yes
• Function: Clock, Calendar, NV SRAM Control
• Rtc Bus Interface: Multiplexed
• Date Format: DW
• Time Format: HH
• Rtc Memory Size: 114 B
• Supply Voltage - Max: 5.5 V
• Supply Voltage - Min: 2.7 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Package / Case: SOIC-28

POWER-UP/POWER-DOWN TIMING—5V
(T
POWER-UP/POWER-DOWN TIMING—3V
(T
WARNING: Under no circumstances are negative undershoots, of any amplitude,
allowed when device is in battery-backup mode.
CAPACITANCE
(T
CS High to Power-Fail
Recovery at Power-Up
V
V
V
Expected Data Retention
CS High to Power-Fail
Recovery at Power-Up
V
V
Expected Data Retention
Input Capacitance
Output Capacitance
A
A
A
CC
CC
CC
CC
CC
= +25°C)
= +25°C)
= +25°C)
Slew Rate Power-Down
Slew Rate Power-Down
Slew Rate Power-Up
Slew Rate Power-Down
Slew Rate Power-Up
PARAMETER
PARAMETER
PARAMETER
4.5V ≥ V
3.0V ≥ V
4.0 ≤ V
3.0 ≤ V
2.5 ≤ V
SYMBOL
SYMBOL
t
t
t
t
t
t
REC
t
REC
CC
CC
CC
t
t
t
DR
t
DR
FB
PF
PF
R
CC
R
CC
F
F
SYMBOL
≤ 4.5V
≤ 4.0V
≤ 3.0V
≥ 4.0V
≥ 2.5V
C
C
OUT
IN
29 of 36
MIN
MIN
300
300
MIN
10
10
10
0
0
TYP
TYP
150
150
TYP
MAX
MAX
MAX
0
0
12
12
UNITS
UNITS
UNITS
years
years
ms
ms
µs
µs
µs
µs
µs
ns
ns
pF
pF
NOTES
NOTES
NOTES
13, 14
13, 14