參數(shù)資料
型號: M41T256YMH7TR
廠商: STMICROELECTRONICS
元件分類: 時(shí)鐘/數(shù)據(jù)恢復(fù)及定時(shí)提取
英文描述: 0 TIMER(S), REAL TIME CLOCK, PDSO44
封裝: 0.330 INCH, PLASTIC, SOH-44
文件頁數(shù): 17/30頁
文件大?。?/td> 271K
代理商: M41T256YMH7TR
DC and AC parameters
M41T256Y
Table 8.
DC characteristics
Table 9.
Crystal electrical characteristics (externally supplied)
Sym
Parameter
Test Condition(1)
1.
Valid for Ambient Operating Temperature: TA = –25 to 70°C; VCC = 4.5 to 5.5V (except where noted).
Min
Typ
Max
Unit
IBAT
Battery current OSC ON
TA = 25°C, VCC = 0V, VBAT = 3.0V
1.5
1.9
A
Battery current OSC OFF
1.0
1.4
A
ICC1 Supply current
f = 400kHz
1.4
3.0
mA
ICC2 Supply current (standby)
SCL, SDA = VCC – 0.3V
1.0
2.5
mA
ILI
Input leakage current
0V
≤ VIN ≤ VCC
±1
A
ILO
(2)
2.
Outputs deselected.
Output leakage current
0V
≤ VOUT ≤ VCC
±1
A
VIH
Input high voltage
0.7VCC
VCC + 0.3
V
VIHB
Input high voltage in battery
back-up for tamper pin
VBAT – Vdiode
VBAT
V
VIL
Input low voltage
–0.3
0.3VCC
V
VBAT Battery voltage
2.5
3.5
V
VOH Output high voltage
VCC + 0.3
V
VOL
Output low voltage
IOL = 3.0mA
0.4
V
Output low voltage (open
drain)(3)(3)
3.
For RST and FT pin (open drain).
IOL = 10mA
0.4
V
VPFD Power fail deselect
4.20
4.50
V
VSO Battery back-up switchover
VBAT
V
RSW
Switch resistance on tamper
pin
500
W
Symbol
Parameter(1)
1.
Load capacitors are integrated within the M41T256Y. Circuit board layout considerations for the 32.768kHz crystal of
minimum trace lengths and isolation from RF generating signals should be taken into account.
Typ
Min
Max
Unit
f0
Resonant frequency
32.768
kHz
RS
Series resistance
35
k
Ω
CL
Load capacitance
12.5
pF
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