M41ST85Y datasheet(32/34 Pages) STMICROELECTRONICS

32 / 34 page

M41ST85Y, M41ST85W

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PART NUMBERING

Table 18. Ordering Information Scheme

Note: 1. The 28-pin SOIC package (SOH28) requires the SNAPHAT® battery/crystal package which is ordered separately under the part

number “M4TXX-BR12SHX” in plastic tube or “M4TXX-BR12SHXTR” in Tape & Reel form (see 19).

2. The SOX28 package includes an embedded 32,768Hz crystal.

Caution: Do not place the SNAPHAT battery package “M4TXX-BR12SH” in conductive foam as it will drain the lithium button-cell bat-

tery.

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

Example:

M41ST

85Y

Device Type

M41ST

Supply Voltage and Write Protect Voltage

85Y = VCC = 4.5 to 5.5V; 4.20V ≤ VPFD ≤ 4.50V

85W = VCC = 2.7 to 3.6V; 2.55V ≤ VPFD ≤ 2.70V

Package

MH(1) = SOH28

MX(2) = SOX28

Temperature Range

6 = –40 to 85°C

Shipping Method

For SOH28:

blank = Tubes (Not for New Design - Use E)

E = Lead-free Package (ECO

PACK®), Tubes

F = Lead-free Package (ECO

PACK®), Tape & Reel

TR = Tape & Reel (Not for New Design - Use F)

For SOX28:

blank = Tubes

TR = Tape & Reel

Part Number

Description

Package

M4T28-BR12SH

Lithium Battery (48mAh) and Crystal SNAPHAT

M4T32-BR12SH

Lithium Battery (120mAh) and Crystal SNAPHAT

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