M48T37V-10MH1F STMicroelectronics, M48T37V-10MH1F Datasheet - Page 19
M48T37V-10MH1F
Manufacturer Part Number
M48T37V-10MH1F
Description
IC TIMEKPR NVRAM 256KB 3V 44-SOH
Manufacturer
STMicroelectronics
Series
Timekeeper®r
Type
Clock/Calendar/NVSRAMr
Datasheet
1.M48T37Y-70MH1F.pdf
(30 pages)
Specifications of M48T37V-10MH1F
Memory Size
256K (32K x 8)
Time Format
HH:MM:SS (24 hr)
Date Format
YY-MM-DD-dd
Interface
Parallel
Voltage - Supply
3 V ~ 3.6 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
44-SOH
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
497-4718-2
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
M48T37Y, M48T37V
one volt. These negative spikes can cause data corruption in the SRAM while in battery
backup mode. To protect from these voltage spikes, it is recommended to connect a
Schottky diode from V
1N5817 is recommended for through hole and MBRS120T3 is recommended for surface
mount.
Figure 9.
Figure 10. Crystal accuracy across temperature
Figure 11. Clock calibration
NORMAL
POSITIVE
CALIBRATION
NEGATIVE
CALIBRATION
Frequency (ppm)
–100
–120
–140
–160
–20
–40
–60
–80
20
0
–40
Supply voltage protection
–30
CC
–20
to V
–10
SS
V CC
Doc ID 7019 Rev 9
(cathode connected to V
0.1µF
0
10
Temperature °C
ΔF = -0.038
F
20
T
30
V CC
V SS
0
ppm
= 25 °C
C
2
DEVICE
CC
(T - T
40
, anode to V
0
)
2
50
± 10%
60
SS
Clock operations
). Schottky diode
70
80
AI00594B
AI02169
AI00999
19/30