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Número de pieza | M40Z100WMH1TR | |
Descripción | NVRAM CONTROLLER for up to TWO LPSRAM | |
Fabricantes | ST Microelectronics | |
Logotipo | ||
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No Preview Available ! M40Z111
M40Z111W
NVRAM CONTROLLER for up to TWO LPSRAM
CONVERT LOW POWER SRAMs into
NVRAMs
PRECISION POWER MONITORING and
POWER SWITCHING CIRCUITRY
AUTOMATIC WRITE-PROTECTION when VCC
is OUT-OF-TOLERANCE
CHOICE of SUPPLY VOLTAGES and
POWER-FAIL DESELECT VOLTAGES:
– M40Z111:
VCC = 4.5V to 5.5V
THS = VSS 4.5V ≤ VPFD ≤ 4.75V
THS = VOUT 4.2V ≤ VPFD ≤ 4.5V
– M40Z111W:
VCC = 3.0V to 3.6V
THS = VSS 2.8V ≤ VPFD ≤ 3.0V
VCC = 2.7V to 3.3V
THS = VOUT 2.5 ≤ VPFD ≤ 2.7V
LESS THAN 15ns CHIP ENABLE ACCESS
PROPAGATION DELAY (for 5.0V device)
PACKAGING INCLUDES a 28-LEAD SOIC
and SNAPHAT® TOP
(to be Ordered Separately)
SOIC PACKAGE PROVIDES DIRECT
CONNECTION for a SNAPHAT TOP which
CONTAINS the BATTERY
SNAPHAT (SH)
Battery
28
1
SOH28 (MH)
Figure 1. Logic Diagram
VCC
DESCRIPTION
The M40Z111/111W NVRAM Controller is a self-
contained device which converts a standard low-
power SRAM into a non-volatile memory.
A precision voltage reference and comparator
monitors the VCC input for an out-of-tolerance con-
dition.
Table 1. Signal Names
THS
Threshold Select Input
E Chip Enable Input
ECON
VOUT
VCC
VSS
Conditioned Chip Enable Output
Supply Voltage Output
Supply Voltage
Ground
THS
E
M40Z111
M40Z111W
VSS
VOUT
ECON
AI02238B
February 1999
1/12
1 page Table 5A. DC Characteristics for M40Z111
(TA = 0 to 70°C; VCC = 4.5V to 5.5V)
Symbol
Parameter
ILI (1)
ILO (1)
Input Leakage Current
Output Leakage Current
ICC Supply Current
VIL Input Low Voltage
VIH Input High Voltage
VOL Output Low Voltage
VOH Output High Voltage
VOHB VOH Battery Back-up
IOUT1 VOUT Current (Active)
IOUT2 VOUT Current (Battery Back-up)
ICCDR Data Retention Mode Current
THS Threshold Select Voltage
VPFD
Power-fail Deselect Voltage (THS = 0)
Power-fail Deselect Voltage (THS = 1)
VSO Battery Back-up Switchover Voltage
Note: 1. Outputs deselected.
Test Condition
0V ≤ VIN ≤ VCC
0V ≤ VOUT ≤ VCC
Outputs open
IOL = 4.0mA
IOH = –2.0mA
IOUT2 = 1.0µA
VOUT > VCC –0.3
VOUT > VCC –0.2
VOUT > VBAT –0.3
Min
–0.3
2.2
2.4
2.0
VSS
4.5
4.2
M40Z111, M40Z111W
Typ Max Unit
±1 µA
±1 µA
3 6 mA
0.8 V
VCC + 0.3
0.4
V
V
V
2.9 3.6 V
160 mA
100 mA
100 µA
150 nA
VOUT
V
4.6 4.75 V
4.35 4.5 V
3.0 V
5/12
5 Page M40Z111, M40Z111W
SH - SNAPHAT Housing for 28 lead Plastic Small Outline
Symb
Typ
mm
Min Max
inches
Typ Min Max
A 9.78 0.385
A1
6.73 7.24
0.265
0.285
A2
6.48 6.99
0.255
0.275
A3 0.38 0.015
B
0.46 0.56
0.018
0.022
D
21.21
21.84
0.835
0.860
E
14.22
14.99
0.560
0.590
eA
15.55
15.95
0.612
0.628
eB
3.20 3.61
0.126
0.142
L
2.03 2.29
0.080
0.090
Drawing is not to scale.
A1 A
A2
A3
eA B L
D eB
E
SH
11/12
11 Page |
Páginas | Total 12 Páginas | |
PDF Descargar | [ Datasheet M40Z100WMH1TR.PDF ] |
Número de pieza | Descripción | Fabricantes |
M40Z100WMH1TR | NVRAM CONTROLLER for up to TWO LPSRAM | ST Microelectronics |
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