M41T81SMY6F STMicroelectronics, M41T81SMY6F Datasheet - Page 26

• Manufacturer Part Number: M41T81SMY6F
• Description: IC RTC SER W/ALARMS 18-SOIC
• Manufacturer: STMicroelectronics
• Type: Clock/Calendar/Alarmr

Specifications of M41T81SMY6F

• Memory Size: 20B
• Time Format: HH:MM:SS:hh (24 hr)
• Date Format: YY-MM-DD-dd
• Interface: I²C, 2-Wire Serial
• Voltage - Supply: 2.7 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 18-SOIC (7.5mm Width)
• Function: Clock/Calendar/Alarm/Timer Interrupt
• Rtc Memory Size: 20 Byte
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 2.7 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Rtc Bus Interface: Serial (I2C)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-6157-2

DC and AC parameters
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Table 11.
1. V
2. Valid for ambient operating temperature: T
Table 12.
1. All voltages referenced to V
2. Valid for ambient operating temperature: T
Figure 17. Bus timing requirements sequence
V
Sym
V
Symbol
PFD
SO
SDA
SCL
CC
t
t
PD
rec
fall time should not exceed 5 mV/µs.
Power-fail deselect
Hysteresis
Battery backup switchover voltage
(V
Hysteresis
tBUF
CC
Power down/up AC characteristics
Power down/up trip points DC characteristics
< V
P
SCL and SDA at V
BAT
SCL and SDA at V
; V
S
CC
< V
SS
Parameter
Parameter
.
PFD
tHD:STA
tR
Doc ID 10773 Rev 6
)
IH
IH
before power-down
tLOW
tHIGH
(1)(2)
after power-up
(1)(2)
tF
A
A
= –40 to 85 °C; V
= –40 to 85 °C; V
V
V
BAT
BAT
tHD:DAT
< V
> V
tSU:DAT
CC
CC
PFD
PFD
= 2.7 to 5.5 V (except where noted).
= 2.7 to 5.5 V (except where noted).
Min
10
0
Min
2.5
SR
tSU:STA
Typ
-
-
V
tHD:STA
V
Typ
2.6
25
40
PFD
BAT
Max
-
-
P
Max
2.7
tSU:STO
M41T81S
Unit
AI00589
nS
µS
Unit
mV
mV
V
V
V