M4T28-BR12SH1 STMicroelectronics, M4T28-BR12SH1 Datasheet - Page 16

• Manufacturer Part Number: M4T28-BR12SH1
• Description: IC SNAPHAT BATT/CRYSTAL 28-SOIC
• Manufacturer: STMicroelectronics

Specifications of M4T28-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
• Ic Function: Timekeeper (Battery & Crystal)
• Supply Voltage Range: 2.8V
• Operating Temperature Range: 0°C To +70°C
• Digital Ic Case Style: SNAPHAT
• No. Of Pins: 28
• Termination Type: SMD
• Rohs Compliant: Yes
• Filter Terminals: SMD
• External Depth: 14.99mm
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-3686-5

Clock operations
16/29
Figure 9.
Figure 10. Clock calibration
NORMAL
POSITIVE
CALIBRATION
NEGATIVE
CALIBRATION
-100
-20
-40
-60
-80
ppm
20
0
Crystal accuracy across temperature
0
5
ΔF = -0.038
10
F
15
Doc ID 6845 Rev 8
T
20
0
ppm
= 25 °C
C
2
25
(T - T
30
0
)
2
± 10%
35
40
45
50
55
60
65
70
°C
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