參數(shù)資料
型號: MK41T56S00TR
廠商: 意法半導體
英文描述: 512 bit 64b x8 Serial Access TIMEKEEPER SRAM
中文描述: 512位64B條x8串行SRAM的訪問計時器
文件頁數(shù): 4/15頁
文件大?。?/td> 102K
代理商: MK41T56S00TR
Symbol
Parameter
Test Condition
Min
Typ
Max
Unit
I
LI
Input Leakage Current
0V
V
IN
V
CC
±
10
μ
A
I
LO
Output Leakage Current
0V
V
OUT
V
CC
±
10
μ
A
I
CC1
Supply Current
SCL/SDA = V
CC
–0.3V
1
mA
I
CC2
Supply Current (Standby)
1
mA
V
IL
Input Low Voltage
–0.3
1.5
V
V
IH
Input High Voltage
3
V
CC
+ 0.8
V
V
OL
Output Low Voltage
I
OL
= 5mA, V
CC
= 4.5V
0.4
V
V
BAT(1)
Battery Supply Voltage
2.6
3
3.5
V
I
BAT
Battery Supply Current
T
A
= 25
°
C, V
CC
= 0V,
Oscillator ON, V
BAT
= 3V
450
500
nA
Note:
1. The RAYOVAC BR1225 or equivalent is recommended as the battery supply.
Table 6. DC Characteristics
(T
A
= 0 to 70
°
C or –40 to 85
°
C; V
CC
= 4.5V to 5.5V)
Symbol
Parameter
Min
Max
Unit
C
IN
Input Capacitance (SCL)
7
pF
C
OUT (2)
Output Capacitance (SDA, FT/OUT)
10
pF
Notes:
1. Effective capacitance measured with power supply at 5V.
2. Sampled, not 100% tested.
3. Outputs deselected.
Table 5. Capacitance
(1,2)
(T
A
= 25
°
C, f = 1 MHz )
Symbol
Parameter
Min
Typ
Max
Unit
V
PFD
Power-fail Deselect Voltage
1.2 V
BAT
1.25 V
BAT
1.285 V
BAT
V
V
SO
Battery Back-up Switchover Voltage
V
BAT
V
Note:
1. All voltages referenced to V
SS
.
Table 7. Power Down/Up Trip Points DC Characteristics
(1)
(T
A
= 0 to 70
°
C or –40 to 85
°
C)
Symbol
Parameter
Min
Typ
Max
Unit
f
O
Resonant Frequency
32.768
kHz
R
S
Series Resistance
35
k
C
L
Load Capacitance
12.5
pF
Notes:
Load capacitors are integrated within the MK41T56. Circuit board layout considerations for the 32.768 kHz crystal of
minimum trace lengths and isolation from RF generating signals should be taken into account.
STMicroelectronics recommends the ECS-.327-12.5-8SP-2 quartz crystal is recommended for industrial temperature operations.
ESC Inc. can be contacted at 800-237-1041 or 913-782-7787 for further information on this crystal type.
Table 8. Crystal Electrical Characteristics
(Externally Supplied)
4/15
MK41T56, MKI41T56
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