MAX6909EO33 Maxim Integrated, MAX6909EO33 Datasheet - Page 4

• 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
ELECTRICAL CHARACTERISTICS (continued)
(V
4
PFI Input Current
PFI to PFO Delay
PFI Hysteresis
PFO Output Voltage High
PFO Output Voltage Low
WATCHDOG INPUT
Watchdog Timeout Period Initial
Watchdog Timeout Period
Minimum WDI Input Pulse Width
WDI Input Threshold
WDI Input Current
PZT OUTPUT
PZT Output Short-Circuit Current
(V
PZT to Be Active)
PZT Frequency 1
PZT Frequency 2
PZT Frequency 3
PZT Frequency 4
PZT Off-Leakage Current
CRYSTAL-FAIL OUTPUT
CX FAIL Output Low Voltage
CX FAIL Off-Leakage Current
ALARM OUTPUT
ALM Output Low Voltage
ALM Off-Leakage Current
2
CC
CC
_______________________________________________________________________________________
C-Compatible Real-Time Clocks with µP
= V
Must Be > V
CC(MIN)
PARAMETER
to V
RST
CC(MAX)
for
, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at T
SYMBOL
I
I
I
PZT
PZT
PZT
PZT
V
t
OLKG
OLKG
OLKG
V
t
V
I
V
V
t
t
WDS
V
WDI
V
PZT
PFH
WD
WD
I
OH
OL
IL
OL
OL
IH
IL
f1
f2
f3
f4
(Note 8)
PFI rising
I
I
Before first WDI edge, after reset timeout
Register select—long
Register select—short
V
MAX69_ _EO30
MAX69_ _EO33
V
V
I
I
SOURCE
SINK
OL
OL
WDI
BATT
CC
= 3mA, V
= 5mA, V
= 2.7V, I
= 1.2mA, V
= V
= 2.0V, V
= 200µA, PFI = V
CC
or GND
OL
BATT
CC
CONDITIONS
CC
= 5mA, V
= 2.7V, V
BATT
PFI rising
PFI falling
Sink current
Source current
Sink current
Source current
= 2.0V, V
= 0V, I
= 2V, PFI = V
BATT
BATT
OL
CC
CC
= 3mA
= V
= 0V
= 0V
= 0V
CC(MIN)
CC
= 0V
0.9 ×
0.7 ×
-100
-100
MIN
0.06
V
1.00
1.00
V
140
100
2.4
6.5
-1
-1
-1
A
CC
CC
5
5
6
= +25°C.) (Notes 1, 2)
1024
2048
4096
8192
TYP
200
0.2
1.6
1.6
0.1
+2
30
5
+100
+100
MAX
0.3 ×
2.25
2.25
V
0.25
0.25
280
2.2
0.2
0.2
0.2
+1
+1
+1
12
18
20
20
25
CC
UNITS
mV
mA
ms
nA
nA
Hz
Hz
Hz
Hz
µA
µA
µA
µs
ns
V
V
V
V
V
s
s