M4T32-BR12SH1 STMicroelectronics, M4T32-BR12SH1 Datasheet - Page 4

• Manufacturer Part Number: M4T32-BR12SH1
• Description: IC SNAPHAT BATT/CRYSTAL 28-SOIC
• Manufacturer: STMicroelectronics

Specifications of M4T32-BR12SH1

• Battery Type: Li-(CF)
• Operating Supply Voltage: 0 V to 2.8 V
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 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: 0 to +75 °C
• Temperature, Operating, Maximum: 70 °C
• Temperature, Operating, Minimum: 0 °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: 0°C To +70°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: 497-3687-5

List of figures
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Logic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
DIP connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
SOIC connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
READ mode AC waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
WRITE enable controlled, WRITE mode AC waveform . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Chip enable controlled, WRITE mode AC waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Checking the BOK flag status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Crystal accuracy across temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Clock calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Supply voltage protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
AC measurement load circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Power down/up mode AC waveforms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
PCDIP28 – 28-pin plastic DIP, battery CAPHAT™, package outline . . . . . . . . . . . . . . . . . 22
SOH28 – 28-lead plastic small outline, 4-socket battery SNAPHAT
SH – 4-pin SNAPHAT
SH – 4-pin SNAPHAT
Recycling symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
®
®
housing for 48 mAh battery & crystal, pack. outline . . . . . . . . . . . 24
housing for 120 mAh battery & crystal, pack. outline . . . . . . . . . . 25
Doc ID 6845 Rev 8
®
, package outline . . . 23
M48T35AV