M41ST87YMX6TR View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
M41ST87YMX6TR
STMicroelectronics
'M41ST87YMX6TR' PDF : 42 Pages View PDF
M41ST87Y, M41ST87W
Table 17. DC Characteristics
Sym
Parameter
Test Condition(1)
M41ST87Y
Min Typ Max
M41ST87W
Unit
Min Typ Max
IBAT(2)
Battery Current
OSC ON
Battery Current
OSC OFF
TA = 25°C, VCC = 0V,
VBAT = 3V
500 700
50
500 700 nA
50
nA
ICC1 Supply Current
f = 400kHz
1.4
0.75 mA
ICC2
Supply Current
(Standby)
SCL, SDA = VCC –
0.3V
1
0.50 mA
Input Leakage
ILI(3)
Current
Input Leakage
Current (PFI)
0V ≤ VIN ≤ VCC
–25
2
±1
±1
µA
25
–25
2
25
nA
ILO(4)
Output Leakage
Current
0V ≤ VIN ≤ VCC
±1
IOUT1(5)
VOUT Current
(Active)
VOUT1 > VCC – 0.3V
175
±1
µA
100 mA
IOUT2
VOUT Current
(Battery Back-up)
VIH Input High Voltage
VIL Input Low Voltage
VBAT Battery Voltage
VOUT2 > VBAT – 0.3V
100
100 µA
0.7VCC
VCC +
0.3
0.7VCC
VCC +
0.3
V
–0.3
0.3VCC –0.3
0.3VCC V
2.5
3.0 3.5(6)
2.5
3.0 3.5(6) V
VOH(7) Output High Voltage
IOH = –1.0mA
2.4
Pull-up Supply
Voltage (Open
Drain)
IRQ/OUT, RST, F32k
2.4
5.5
V
3.6
V
VOHB(8)
VOL
VOH (Battery Back-
up)
Output Low Voltage
Output Low Voltage
(Open Drain)(10)
VPFD Power Fail Deselect
IOUT2 = –1.0µA(9)
IOL = 3.0mA
IOL = 10mA
THS Bit = 0
THS Bit = 1
2.9
2.9
V
0.4
0.4
V
0.4
0.4
V
4.20 4.35 4.50 2.55 2.62 2.70 V
4.50 4.60 4.75 2.80 2.88 3.00 V
VPFI1 PFI Input Threshold
PFI Hysteresis
VCC = 5V(Y)
VCC = 3V(W)
PFI Rising
1.225 1.250
20
1.275
70
1.225 1.250 1.275 V
20
70 mV
VPFI2
VSO
PFI Input Threshold
PFI Hysteresis
Battery Back-up
Switchover
VCC = 5V(Y)
VCC = 3V(W)
PFI Rising
1.225 1.250
20
2.5
1.275
70
1.225 1.250 1.275 V
20
70 mV
2.5
V
RSW
Switch Resistance
on Tamper Pin
500
500 Ω
Note: 1. Valid for Ambient Operating Temperature: TA = –40 to 85°C; VCC = 4.5 to 5.5V or 2.7 to 3.6V (except where noted).
2. Measured with VOUT and ECON open. Not including Tamper Detection Current (see Table 4., page 18).
3. RSTIN1 and RSTIN2 internally pulled-up to VCC through 100KΩ resistor. WDI internally pulled-down to VSS through 100KΩ resistor.
4. Outputs Deselected.
5. External SRAM must match RTC SUPERVISOR chip VCC specification.
6. For rechargeable back-up, VBAT (max) may be considered VCC.
7. For PFO1 and PFO2 (if PFOD = '0'), SQW/FT (if SQWOD = '0'), and TPCLR pins (CMOS).
8. Conditioned output (ECON) can only sustain CMOS leakage current in the battery back-up mode. Higher leakage currents will re-
duce battery life.
9. TPCLR output can source –300µA (typ) for VBAT = 2.9V.
10. For IRQ/OUT, SQW/FT (if SQWOD = '1'), PFO1 and PFO2 (if PFOD = '1'), RST, SDA, and F32k pins (Open Drain).
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