M41TTHSMH6E STMICROELECTRONICS [STMicroelectronics], M41TTHSMH6E Datasheet - Page 31

• Manufacturer Part Number: M41TTHSMH6E
• Description: Serial Real Time Clock with 44Bytes NVRAM and Reset
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

M41T94
Table 13.
1. Valid for ambient operating temperature: T
2. RSTIN1 and RSTIN2 internally pulled-up to V
3. Outputs deselected.
4. For rechargeable back-up, V
5. For SQW pin (CMOS).
6. For IRQ/FT/OUT, RST pins (open drain): if pulled-up to supply other than V
Table 14.
1. Load capacitors are integrated within the M41T94. Circuit board layout considerations for the 32.768 kHz
2. STMicroelectronics recommends the KDS DT-38: 1TA/1TC252E127, Tuning Fork Type (thru-hole) or the
Symb.
I
V
V
I
I
I
LO
V
V
I
V
V
Symbol
CC1
CC2
LI
V
BAT
PFD
through 100K resistor.
to, or less than 3.0V when V
crystal of minimum trace lengths and isolation from RF generating signals should be taken into account.
These characteristics are externally supplied.
DMX-26S: 1TJS125FH2A212, (SMD) quartz crystal for industrial temperature operations. KDS can be
contacted at [e-mail] or http://www.kdsj.co.jp for further information on this crystal type.
BAT
OH
SO
OL
IH
(2)
IL
(3)
R
C
f
0
S
L
Battery current OSC on
Battery current OSC off
Supply current
Supply current (standby)
Input leakage current
Output leakage current
Input high voltage
Input low voltage
Battery voltage
Output high voltage
Output low voltage
Output low voltage
(open drain)
Pull-up supply voltage
(open drain)
Power fail deselect (THS = V
Power fail deselect (THS = V
Battery back-up switchover
DC characteristics
Crystal electrical characteristics (externally supplied)
Resonant frequency
Series resistance
Load capacitance
Parameter
(6)
Parameter
(5)
CC
BAT
(5)
= 0V (during battery back-up mode).
(max) may be considered V
CC
SS
(1)(2)
)
A
)
= –40 to 85°C; V
CC
RST, IRQ/FT/OUT
Test condition
T
through 100K resistor. WDI internally pulled-down to V
0V V
A
0V, V
I
0V V
OH
I
SCL, SDI =
I
= 25°C, V
V
OL
OL
f = 2 MHz
CC
= –1.0mA
= 3.0mA
= 10mA
BAT
OUT
– 0.3V
IN
= 3V
CC
V
CC
V
CC
CC
.
CC
32.768
= 2.7 to 5.5V (except where noted).
(1)
12.5
Typ
=
0.7V
–0.3
4.20
2.55
Min
2.5
2.4
CC
CC
Min
, this supply must be equal
DC and AC parameters
4.40
2.60
Typ
400
2.5
50
Max
50
V
0.3V
CC
3.5
Max
4.50
2.70
500
1.4
0.4
0.4
5.5
±1
±1
2
+ 0.3
(4)
CC
Unit
kHz
pF
k
SS
31/40
Unit
mA
mA
nA
nA
µA
µA
V
V
V
V
V
V
V
V