M41ST85WMH6E STMicroelectronics, M41ST85WMH6E Datasheet - Page 29

• Manufacturer Part Number: M41ST85WMH6E
• Description: IC RTC 3.0V 512BIT NVRAM 28SOIC
• Manufacturer: STMicroelectronics
• Type: Clock/Calendar/Supervisorr

Specifications of M41ST85WMH6E

• Memory Size: 64B
• Time Format: HH:MM:SS:hh (24 hr)
• Date Format: YY-MM-DD-dd
• Interface: I²C, 2-Wire Serial
• Voltage - Supply: 2.7 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 28-SOIC, 28-SOH (8.48mm Width)
• Function: Clock/Calendar/Supervisor/Alarm
• Rtc Memory Size: 64 Byte
• Supply Voltage (max): 3.6 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 (2-Wire, I2C)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 497-2804-5; M41ST85WMH6

M41ST85W
4
Caution:
Caution:
Maximum ratings
Stressing the device above the rating listed in the absolute maximum ratings table may
cause permanent damage to the device. These are stress ratings only and operation of the
device at these or any other conditions above those indicated in the operating sections of
this specification is not implied. Exposure to absolute maximum rating conditions for
extended periods may affect device reliability. Refer also to the STMicroelectronics SURE
Program and other relevant quality documents.
Table 8.
1. For SOH28 package, lead-free (pb-free) lead finish: reflow at peak temperature of 260°C (the time above
2. The SOX28 package has lead-free (pb-free) lead finish, but cannot be exposed to peak reflow temperature
Negative undershoots below –0.3 V are not allowed on any pin while in the battery backup
mode.
Do NOT wave solder SOIC to avoid damaging SNAPHAT sockets.
Symbol
T
T
255°C must not exceed 30 seconds).
in excess of 240°C. Reflow at peak temperature of 240°C (the time above 235°C must not exceed 20
seconds).
V
V
P
STG
SLD
I
CC
O
IO
D
Storage temperature (V
off)
Lead solder temperature for 10 seconds
Input or output voltage
Supply voltage
Output current
Power dissipation
Absolute maximum ratings
CC
Parameter
off, oscillator
SNAPHAT
SOH28
SOX28
SOIC
(2)
(1)
®
–0.3 to V
–55 to 150
–0.3 to 4.6
–40 to 85
Value
Maximum ratings
260
240
20
1
CC
+0.3
Unit
mA
°C
°C
°C
°C
W
V
V
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