M48T35Y-70MH1 STMicroelectronics, M48T35Y-70MH1 Datasheet - Page 16

• Manufacturer Part Number: M48T35Y-70MH1
• Description: Real Time Clock Advanced Analog
• Manufacturer: STMicroelectronics

Specifications of M48T35Y-70MH1

• Function: Clock, Calendar, NV Timekeeping RAM, Watchdog Timer, Battery Backup
• Rtc Memory Size: 32768 B
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 4.5 V
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Mounting Style: SMD/SMT
• Rtc Bus Interface: Parallel
• Package / Case: SOH
• Time Format: HH:MM:SS
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Clock operations
3.6
16/28
V
I
fluctuations, resulting in spikes on the V
capacitors are used to store energy which stabilizes the V
bypass capacitors will be released as low going spikes are generated or energy will be
absorbed when overshoots occur. A bypass capacitor value of 0.1 µF (as shown in
Figure
In addition to transients that are caused by normal SRAM operation, power cycling can
generate negative voltage spikes on V
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 10. Supply voltage protection
CC
CC
transients, including those produced by output switching, can produce voltage
noise and negative going transients
10) is recommended in order to provide the needed filtering.
CC
to V
SS
Doc ID 2611 Rev 9
V CC
(cathode connected to V
0.1µF
CC
CC
that drive it to values below V
bus. These transients can be reduced if
V CC
V SS
CC
CC
DEVICE
, anode to V
bus. The energy stored in the
SS
SS
M48T35, M48T35Y
by as much as
). Schottky diode
AI02169