M41ST85WMX6 STMicroelectronics, M41ST85WMX6 Datasheet - Page 32

• Manufacturer Part Number: M41ST85WMX6
• Description: IC RTC 3.0V NVRAM 28SOIC
• Manufacturer: STMicroelectronics
• Type: Clock/Calendar/Supervisorr

Specifications of M41ST85WMX6

• 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)
• Memory Configuration: 64 X 8
• Nvram Features: RTC, Internal Battery, XTAL
• Interface Type: I2C, Serial, 2-Wire
• Supply Voltage Range: 2.7V To 3.6V
• Memory Case Style: SO
• No. Of Pins: 28
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-2805-5

M41ST85Y, M41ST85W
PART NUMBERING
Table 18. Ordering Information Scheme
Example:
Device Type
M41ST
Supply Voltage and Write Protect Voltage
85Y = V
85W = V
Package
MH
MX
Temperature Range
6 = –40 to 85°C
Shipping Method
For SOH28:
blank = Tubes (Not for New Design - Use E)
E = Lead-free Package (ECO
F = Lead-free Package (ECO
TR = Tape & Reel (Not for New Design - Use F)
For SOX28:
blank = Tubes
TR = Tape & Reel
Note: 1. The 28-pin SOIC package (SOH28) requires the SNAPHAT
For other options, or for more information on any aspect of this device, please contact the ST Sales Office
nearest you.
Table 19. SNAPHAT Battery Table
32/34
(2)
(1)
Caution: Do not place the SNAPHAT battery package “M4TXX-BR12SH” in conductive foam as it will drain the lithium button-cell bat-
tery.
2. The SOX28 package includes an embedded 32,768Hz crystal.
= SOX28
= SOH28
M4T28-BR12SH
M4T32-BR12SH
CC
number “M4TXX-BR12SHX” in plastic tube or “M4TXX-BR12SHXTR” in Tape & Reel form (see 19).
CC
Part Number
= 4.5 to 5.5V; 4.20V
= 2.7 to 3.6V; 2.55V
PACK
PACK
Lithium Battery (48mAh) and Crystal SNAPHAT
Lithium Battery (120mAh) and Crystal SNAPHAT
V
V
PFD
PFD
®
®
), Tape & Reel
), Tubes
4.50V
2.70V
Description
M41ST
®
battery/crystal package which is ordered separately under the part
85Y
MH
6
Package
SH
SH
E