M4T32-BR12SH6 STMicroelectronics, M4T32-BR12SH6 Datasheet - Page 3

• Manufacturer Part Number: M4T32-BR12SH6
• Description: IC SNAPHAT BATT/CRYSTAL 28-SOIC
• Manufacturer: STMicroelectronics

Specifications of M4T32-BR12SH6

• Battery Type: Li-(CF)
• Operating Supply Voltage: 0 V to 2.8 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Package / Case: SOIC-28
• Mounting Style: SMD/SMT
• Capacity: 120 mAh
• Chemical System: Lithium Poly-Carbonmonoflouride
• Primary Type: Pack
• Size: Cylindrical
• Standards: UL Recognized
• Temperature, Operating: -40 to +85 °C
• Temperature, Operating, Maximum: 85 °C
• Temperature, Operating, Minimum: -40 °C
• Termination: Snap-On
• Voltage, Battery: 3 V
• Voltage, Rating: 3 V
• Supply Voltage Range: 2.8V
• Battery Ic Case Style: SOIC
• No. Of Pins: 4
• Operating Temperature Range: -40°C To +85°C
• Crystal Terminals: Snap On
• Load Capacitance: 12.5pF
• Rohs Compliant: Yes
• Crystal Mounting Type: SMD
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-3688-5

SUMMARY DESCRIPTION
The M4TXX-BR12SH SNAPHAT
able lithium power source for ST’s non-volatile
TIMEKEEPER
age (28- and 44-pin).
Figure 2. Logic Diagram
®
V BAT–
surface-mount SOIC (MH) pack-
X1
SNAPHAT
V BAT+
X2
®
top is a detach-
AI02528
The SNAPHAT top contains both the battery and
crystal and is designed to be “snapped on” after
the SOIC is surface mounted on the PC board.
Thus the two piece solution prevents the battery
and crystal from being exposed to the high tem-
peratures of the surface mount process.
Table 1. Signal Names
X1
X2
V
V
BAT–
BAT+
M4T28-BR12SH, M4T32-BR12SH
Crystal Input
Crystal Output
Negative Voltage
Positive Voltage
3/12