m41t60 STMicroelectronics, m41t60 Datasheet - Page 17

• Manufacturer Part Number: m41t60
• Description: Serial Access Real-time Clock
• Manufacturer: STMicroelectronics

M41T60
Table 7. DC Characteristics
1. Valid for Ambient Operating Temperature: T
2. When using battery back-up, V
3. Oscillator start-up guaranteed at 1.5V only.
Table 8. Crystal electrical characteristics
1. These values are externally supplied. STMicroelectronics recommends the Citizen CFS-145 (1.5x5mm) and the KDS DT-
2. Load capacitors are integrated within the M41T60. Circuit board layout considerations for the 32.768KHz crystal of
3. Guaranteed by design.
4. R
Symbol
Symbol
V
I
I
V
V
CC
CC1
CC2
V
I
38 (3x8mm) for thru-hole, or the KDS DMX-26S (3.2x8mm) for surface-mount, tuning fork-type quartz crystals.
minimum trace lengths and isolation from RF generating signals should be taken into account.
I
LO
R
C
OL
f
KDS can be contacted at [e-mail] or http://www.kdsj.co.jp.
Citizen can be contacted at [e-mail] or http://www.citizencrystal.com.
LI
IH
IL
O
S (max)
S
L
(2)
Operating Voltage
Supply Current
Supply Current
(Standby)
Input Low Voltage
Input High Voltage
Output Low Voltage
Pull-up Supply
Voltage (Open Drain)
Input Leakage
Current
Output Leakage
Current
= 65kΩ for T
Resonant Frequency
Series Resistance
(T
Load Capacitance
A
= –40 to 70°C, oscillator start-up at 2.0V)
Parameter
A
= –40 to 85°C and oscillator start-up at 1.5V.
CC
fall time should not exceed 10mV/µs.
Parameter
V
CC
SCL = 400kHz
V
≥ V
= 4.4V, I
≤ V
SCL = 0Hz
CC
(No Load)
All inputs
SS
CC
A
= 4.4V, I
= –40 to 85°C; V
Test Condition
I
2
+ 0.2V
FT, OFIRQ/OUT
0V ≤ V
– 0.2V
(1)(2)
C Bus (400kHz)
0V ≤ V
OL
Clock
= 1mA (OFIRQ/OUT)
OUT
OL
IN
= 3mA (SDA)
≤ V
(3)
≤ V
CC
CC
CC
3.0V @ 25°C
2.0V @ 25°C
(1)
V
V
V
V
V
= 1.3 to 4.4V (except where noted).
CC
CC
CC
CC
CC
4.4V
3.6V
= 4.4V
= 3.6V
= 3.0V
= 2.5V
= 2.0V
0.7 V
–0.2
–1.0
–1.0
Min
Min
1.0
1.3
CC
32.768
DC and AC parameters
Typ
Typ
375
350
310
50
35
30
20
6
V
75
0.3 V
CC
Max
Max
+1.0
+1.0
100
950
700
4.4
4.4
0.4
0.4
4.4
70
(3)(4)
+ 0.3
CC
Unit
Unit
kHz
17/24
pF
kΩ
µA
µA
µA
µA
µA
nA
nA
nA
nA
µA
µA
V
V
V
V
V
V
V