M48T35Y-70PM1 STMicroelectronics, M48T35Y-70PM1 Datasheet - Page 15

• Manufacturer Part Number: M48T35Y-70PM1
• Manufacturer: STMicroelectronics

Specifications of M48T35Y-70PM1

• Bus Type: Parallel
• User Ram: 32KB
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 4.5V
• Operating Temperature Classification: Commercial
• Operating Temperature (max): 70C
• Operating Temperature (min): 0C
• Pin Count: 28
• Mounting: Through Hole
• Date Format: DW:DM:M:Y
• Time Format: HH:MM:SS
• Lead Free Status / RoHS Status: Supplier Unconfirmed

M48T35 M48T35Y
3.6
Figure 8.
Figure 9.
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 10 on page
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
CC
NORMAL
POSITIVE
CALIBRATION
NEGATIVE
CALIBRATION
CC
transients, including those produced by output switching, can produce voltage
noise and negative going transients
-100
-20
-40
-60
-80
ppm
20
0
Crystal accuracy across temperature
Clock calibration
0
16) is recommended in order to provide the needed filtering.
5
CC
10
F
F = -0.038
to V
15
SS
(cathode connected to V
T
20
0
ppm
= 25 C
C
2
25
(T - T
CC
CC
30
that drive it to values below V
0
)
bus. These transients can be reduced if
2
35
10%
40
45
CC
CC
50
, anode to V
bus. The energy stored in the
55
60
SS
SS
65
Clock operations
AI02124
by as much as
). Schottky diode
70
C
AI00594B
15/30