MAX6909EO33 Maxim Integrated, MAX6909EO33 Datasheet - Page 8

• Manufacturer Part Number: MAX6909EO33
• Description: Real Time Clock
• Manufacturer: Maxim Integrated
• Series: MAX6909, MAX6910r

Specifications of MAX6909EO33

• Function: Clock, Calendar, Watchdog Timekeeper, NV SRAM Control
• Rtc Bus Interface: Serial
• Time Format: HH
• Rtc Memory Size: 31 B
• Supply Voltage - Max: 3.6 V
• Supply Voltage - Min: 3 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Package / Case: QSOP-20

I
Supervisor and NV RAM Controller
8
(V
2
CC
13.0
12.5
12.0
11.5
11.0
10.5
10.0
_______________________________________________________________________________________
C-Compatible Real-Time Clocks with µP
= 3.3V, V
-40
PFI-TO-PFO DELAY vs. TEMPERATURE
PFI FALLING AT 10V/ms
-25
-10
BATT
TEMPERATURE (°C)
5
= 3V, T
120
110
100
80
70
60
50
40
30
90
80
70
60
20
-40
-40
35
V
CE_IN TO CE_OUT ON-RESISTANCE
A
V
CE_IN
CC
= +25°C, unless otherwise noted.)
-15
PZT OUTPUT RESISTANCE
= V
50
-15
= 0.9 x V
RST
vs. TEMPERATURE
vs. TEMPERATURE
TEMPERATURE (°C)
65
TEMPERATURE (°C)
+ 0.1V = 2.73V
V
CC
10
CC
-10
80
V
= V
CC
RST
= 3V
+ 0.1V = 3.03V
35
35
V
CC
1.700
1.695
1.690
1.685
1.680
1.675
1.670
1.665
1.660
= 3.3V
Typical Operating Characteristics (continued)
60
60
-40
-25 -10
85
WATCHDOG TIMEOUT PERIOD
85
vs. TEMPERATURE
TEMPERATURE (°C)
5
20
35
50
100
70
65
60
55
50
45
40
90
80
70
60
50
40
30
20
10
0
65
2.7
0
PZT OUTPUT RESISTANCE =
(V
vs. RESET COMPARATOR OVERDRIVE
PZT OUTPUT RESISTANCE vs. V
BATT
80
MAXIMUM TRANSIENT DURATION
50
/I
RESET ASSERTS ABOVE THIS LINE
SINK
100 150 200 250
+ V
3.0
V
CC
OVERDRIVE (mV)
CC
120
110
100
/I
90
80
70
VOLTAGE (V)
SOURCE
CE_IN TO CE_OUT ON-RESISTANCE vs. V
2.7
V
) / 2
CE_IN
300 350
3.3
= 0.9 x V
400
3.0
V
CC
CC
CC
450
VOLTAGE (V)
3.6
500
3.3
3.6
CC