M41T11_08 STMICROELECTRONICS [STMicroelectronics], M41T11_08 Datasheet - Page 20

• Manufacturer Part Number: M41T11_08
• Description: Serial real-time clock with 56 bytes of NVRAM
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

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Table 6.
1. Effective capacitance measured with power supply at 5V; sampled only, not 100% tested.
2. At 25°C, f = 1 MHz.
3. Outputs deselected.
Table 7.
1. Valid for ambient operating temperature: T
2. STMicroelectronics recommends the RAYOVAC BR1225 or BR1632 (or equivalent) as the battery supply.
3. After switchover (V
4. For rechargeable back-up, V
Table 8.
1. These values are externally supplied if using the SO8 package. STMicroelectronics recommends the KDS
2. Load capacitors are integrated within the M41T11. Circuit board layout considerations for the 32.768 kHz
3. All SNAPHAT
Symbol
Symbol
V
Symbol
C
I
I
V
BAT
I
DT-38: 1TA/1TC252E127, Tuning Fork Type (thru-hole) or the 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.
crystal of minimum trace lengths and isolation from RF generating signals should be taken into account.
V
I
CC1
CC2
V
BAT
OUT
I
R
C
LO
C
f
t
LI
OL
IH
IL
O
LP
S
L
IN
(2)
(3)
Input leakage current
Output leakage current
Supply current
Supply current (standby)
Input low voltage
Input high voltage
Output low voltage
Pull-up supply voltage
(open drain)
Battery supply voltage
Battery supply current
Resonant frequency
Series resistance
Load capacitance
Input capacitance (SCL)
Output capacitance (SDA, FT/OUT)
Low-pass filter input time constant (SDA and SCL)
Capacitance
DC characteristics
Crystal electrical characteristics
®
battery:crystal tops meet these specifications.
Parameter
SO
), V
Parameter
BAT
(min) can be 2.0 V for crystal with R
BAT
Parameter
(max) may be considered V
(1)(2)(3)
Switch frequency = 100 kHz
oscillator ON, V
SCL, SDA = V
A
T
(1)(2)
A
= –40 to 85°C; V
Test Condition
0V
= 25°C, V
0V
I
OL
FT/OUT
V
V
OUT
= 3 mA
IN
CC
CC
BAT
V
CC
V
CC
– 0.3 V
= 0 V,
CC
CC
.
(1)
= 3 V
Min
= 2.0 to 5.5V (except where noted).
S
= 40 K .
0.7V
2.5
–0.3
Min
250
Min
32.768
12.5
Typ
(3)
CC
Typ
0.8
3
1000
Max
10
7
V
Max
0.3V
60
CC
3.5
Max
300
0.4
5.5
±1
±1
70
1
+ 0.5
(4)
CC
Unit
pF
pF
ns
Unit
kHz
k
Unit
pF
µA
µA
µA
µA
µA
V
V
V
V
V