M41ST84WMH ST Microelectronics, M41ST84WMH Datasheet - Page 8

• Manufacturer Part Number: M41ST84WMH
• Description: 5.0 or 3.0V / 512 bit 64 x 8 SERIAL RTC with SUPERVISORY FUNCTIONS
• Manufacturer: ST Microelectronics

M41ST84Y, M41ST84W
Table 5. DC Characteristics
Note: 1. Valid for Ambient Operating Temperature: T
Table 6. Crystal Electrical Characteristics (Externally Supplied)
Note: 1. Load capacitors are integrated within the M41ST84Y/W. Circuit board layout considerations for the 32.768 kHz crystal of minimum
8/31
I
V
Sym
V
I
I
I
V
V
V
I
LO
V
LI
V
CC1
CC2
V
BAT
PFD
BAT
PFI
OH
SO
OL
IH
(2)
IL
Symbol
(3)
2. RSTIN internally pulled-up to V
3. Outputs deselected.
4. For PFO and SQW pins (CMOS).
5. For IRQ/FT/OUT, RST pins (Open Drain): if pulled-up to supply other than V
6. For rechargeable back-up, V
2. STMicroelectronics recommends the KDS DT-38: 1TA/1TC252E127, Tuning Fork Type (thru-hole) or the DMX-26S:
R
C
f
0
V
trace lengths and isolation from RF generating signals should be taken into account.
1TJS125FH2A212, (SMD) quartz crystal for industrial temperature operations. KDS can be contacted at [e-mail] or ht-
tp://www.kdsj.co.jp for further information on this crystal type.
S
L
Battery Current OSC
ON
Battery Current OSC
OFF
Supply Current
Supply Current
(Standby)
Input Leakage Current
Input Leakage Current
(PFI)
Output Leakage
Current
Input High Voltage
Input Low Voltage
Battery Voltage
Output High Voltage
Output Low Voltage
Output Low Voltage
(Open Drain)
Power Fail Deselect
PFI Input Threshold
PFI Hysteresis
Battery Back-up
Switchover
CC
= 0V (during battery back-up mode).
Parameter
Resonant Frequency
Series Resistance
Load Capacitance
(5)
(4)
BAT
0V
CC
Parameter
0V
(max) may be considered V
I
Condition
OH
V
V
SCL, SDA =
I
I
through 100K resistor. WDI internally pulled-down to V
V
f = 400kHz
OL
T
PFI Rising
V
OL
V
CC
CC
A
CC
BAT
CC
V
= –1.0mA
= 3.0mA
Test
= 25°C,
V
= 10mA
OUT
= 5V(Y)
= 3V(V)
– 0.3V
IN
= 0V,
= 3V
A
(1,2)
V
(1)
= –40 to 85°C; V
V
CC
CC
0.7V
1.225
–0.3
4.20
Min
–25
2.5
2.4
CC
CC
CC
M41ST84Y
.
1.250
4.40
= 2.7 to 3.6V or 4.5 to 5.5V (except where noted).
Typ
400
3.0
2.5
50
20
2
32.768
V
CC
12.5
Typ
0.3V
CC
1.275
3.5
Max
4.50
, this supply must be equal to, or less than 3.0V when
500
1.4
0.4
0.4
±1
25
±1
70
1
+ 0.3
(6)
CC
0.7V
1.225
Min
–0.3
2.55
Min
–25
SS
2.5
2.4
CC
through 100K
M41ST84W
1.250
2.60
Typ
400
3.0
2.5
50
20
2
Max
50
V
resistor.
0.3V
CC
1.275
3.5
Max
0.75
0.50
2.70
500
0.4
0.4
±1
25
±1
70
+ 0.3
(6)
CC
Unit
kHz
k
pF
Unit
mA
mA
mV
nA
nA
µA
nA
µA
V
V
V
V
V
V
V
V
V