M40Z300MH STMICROELECTRONICS [STMicroelectronics], M40Z300MH Datasheet

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M40Z300MH

Manufacturer Part Number
M40Z300MH
Description
NVRAM CONTROLLER for up to EIGHT LPSRAM
Manufacturer
STMICROELECTRONICS [STMicroelectronics]
Datasheet

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M40Z300MH1
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DESCRIPTION
The M40Z300/W NVRAM Controller is a self-con-
tained device which converts a standard low-pow-
er SRAM into a non-volatile memory. A precision
voltage reference and comparator monitors the
V
March 2000
CC
CONVERT LOW POWER SRAMs into
NVRAMs
PRECISION POWER MONITORING and
POWER SWITCHING CIRCUITRY
AUTOMATIC WRITE-PROTECTION when V
is OUT-OF-TOLERANCE
TWO INPUT DECODER ALLOWS CONTROL
for up to 8 SRAMs (with 2 devices active in
parallel)
CHOICE of SUPPLY VOLTAGES and
POWER-FAIL DESELECT VOLTAGES:
– M40Z300:
– M40Z300W:
RESET OUTPUT (RST) for POWER ON
RESET
LESS THAN 12ns CHIP ENABLE ACCESS
PROPAGATION DELAY (for 5.0V device)
PACKAGING INCLUDES a 28-LEAD SOIC
and SNAPHAT
(to be Ordered Separately)
SOIC PACKAGE PROVIDES DIRECT
CONNECTION for a SNAPHAT TOP which
CONTAINS the BATTERY
BATTERY LOW PIN (BL)
input for an out-of-tolerance condition.
V
THS = V
THS = V
V
THS = V
V
THS = V
CC
CC
CC
= 4.5V to 5.5V
= 3.0V to 3.6V
= 2.7V to 3.3V
SS
OUT
SS
OUT
4.5V
2.8V
®
4.2V
2.5
TOP, or a 16-LEAD SOIC
NVRAM CONTROLLER for up to EIGHT LPSRAM
V
V
V
V
PFD
PFD
PFD
PFD
2.7V
4.75V
3.0V
4.5V
CC
Figure 1. Logic Diagram
NOTE: 1. For 16-pin SOIC package only.
SNAPHAT (SH)
28
THS
SOH28 (MH)
E
B
A
Battery
1
V CC
M40Z300W
V SS
M40Z300
B–
M40Z300W
B+
(1)
(1)
M40Z300
16
SO16 (MQ)
1
V OUT
BL
E1 CON
E2 CON
E3 CON
E4 CON
RST
AI02242
1/16

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M40Z300MH Summary of contents

Page 1

NVRAM CONTROLLER for up to EIGHT LPSRAM CONVERT LOW POWER SRAMs into NVRAMs PRECISION POWER MONITORING and POWER SWITCHING CIRCUITRY AUTOMATIC WRITE-PROTECTION when V is OUT-OF-TOLERANCE TWO INPUT DECODER ALLOWS CONTROL for SRAMs (with 2 devices active ...

Page 2

M40Z300, M40Z300W Figure 2A. SOIC28 Connections V OUT RST M40Z300 M40Z300W THS AI02243 Table ...

Page 3

Table 2. Absolute Maximum Ratings Symbol T Ambient Operating Temperature A Storage Temperature (V T STG V Input or Output Voltages IO Supply Voltage Output Current O P Power Dissipation D Note: 1. Stresses greater than those ...

Page 4

M40Z300, M40Z300W Table 3. Truth Table Inputs Table 4. AC Measurement Conditions Input Rise and Fall Times Input Pulse Voltages Input and Output Timing Ref. Voltages DATA RETENTION ...

Page 5

Figure 4. Hardware Hookup 3.0V, 3. OUT 0.1 F M40Z300 M40Z300W 0 CON A E2 CON B E3 CON E E4 CON Threshold THS RST POWER-ON RESET OUTPUT All microprocessors ...

Page 6

M40Z300, M40Z300W (1) Table 5. Capacitance ( ° MHz) A Symbol Parameter C Input Capacitance IN C Output Capacitance OUT Note: 1. Sampled only, not 100% tested. 2. Outputs deselected. Table 6A. DC Characteristics for ...

Page 7

Table 6B. DC Characteristics for M40Z300W ( 70° 3.6V or 2.7V to 3.3V Symbol Parameter (1) Input Leakage Current Supply Current CC V Input Low Voltage IL V ...

Page 8

M40Z300, M40Z300W Table 7. Power Down/Up AC Characteristics ( 70°C) A Symbol (1) V (max PFD PFD F (2) V (min PFD (min PFD ...

Page 9

Figure 5. Power Down Timing PFD (max) V PFD V PFD (min CON - E4 CON RST Figure 6. Power Up Timing PFD (max) V PFD V PFD (min) ...

Page 10

M40Z300, M40Z300W Figure 7. Address-Decode Time CON -E4 CON Note: During system design, compliance with the SRAM timing parameters must comprehend the propagation delay between E and EX CON Table 8. Battery Table Part Number M4Z28-BR00SH ...

Page 11

Table 9. Ordering Information Scheme Example: Supply Voltage and Write Protect Voltage 300 = V = 4.5V to 5.5V CC THS = V 4. PFD THS = V 4.2V V OUT PFD 300W = V = 3.0V to ...

Page 12

M40Z300, M40Z300W Table 11. SOH28 - 28 lead Plastic Small Outline, battery SNAPHAT, Package Mechanical Data Symb Typ 1. Figure 9. SOH28 - 28 lead Plastic Small ...

Page 13

Table 12. M4Z28-BR00SH SNAPHAT Housing for 48 mAh Battery, Package Mechanical Data Symb Typ Figure 10. M4Z28-BR00SH SNAPHAT Housing for 48 mAh Battery, Package Outline Drawing is not to scale. ...

Page 14

M40Z300, M40Z300W Table 13. M4Z32-BR00SH SNAPHAT Housing for 120 mAh Battery, Package Mechanical Data Symb Typ Figure 11. M4Z32-BR00SH SNAPHAT Housing for 120 mAh Battery, Package Outline Drawing is not ...

Page 15

Table 14. SO16 - 16 lead Plastic Small Outline, 300 mils body width Symb. Typ 1. 0. Figure 12. SO16 - 16 lead Plastic Small Outline, 300 mils ...

Page 16

M40Z300, M40Z300W Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from ...

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