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PDF ( 数据手册 , 数据表 ) M40Z111WMH

零件编号 M40Z111WMH
描述 NVRAM CONTROLLER for up to TWO LPSRAM
制造商 ST Microelectronics
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M40Z111WMH 数据手册, 描述, 功能
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
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M40Z111WMH pdf, 数据表
M40Z111, M40Z111W
Figure 6. Power Up Timing
VCC
VPFD (max)
VPFD
VPFD (min)
VSO
E
ECON
VOHB
tR
tER
tEDH
Table 7. Battery Table
Part Number
M4Z28-BR00SH1
M4Z32-BR00SH1
Description
Lithium Battery (50mAh) SNAPHAT
Lithium Battery (130mAh) SNAPHAT
tEDL
AI02397
Package
SH
SH
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