X46402 Datasheet, PDF (16/23 Pages) Xicor Inc. – Dual Voltage CPU Supervisor with 64K Password Protected EEPROM

X46402
Preliminary Information
An easier way to determine that the password has been
changed correctly is to read the ACK bit following the
second writing of the new password. If the device returns
an ACK, the password is good. A No ACK indicates
something went wrong. If there was an error, the pass-
word remains unchanged.
There is no way to read any of the passwords.
ABSOLUTE MAXIMUM RATINGS*
Temperature under Bias . . . . . . . . . . . . –65°C to +135°C
Storage Temperature . . . . . . . . . . . . . . . –65°C to +150°C
Voltage on any Pin with respect to V_SS . . . . .–1V to +7V
D.C. Output Current . . . . . . . . . . . . . . . . . . . . . . . . . . 5mA
Lead Temperature (Soldering, 10 seconds) . . . . . .300°C
*COMMENT
Stresses above those listed under “Absolute Maximum
Ratings” may cause permanent damage to the device.
This is a stress rating only and the functional operation of
the device at these or any other conditions above those
listed in the operational sections of this specification is
not implied. Exposure to absolute maximum rating condi-
tions for extended periods may affect device reliability.
RECOMMENDED OPERATING CONDITIONS
Temp
Commercial
Extended
Min.
0°C
–20°C
Max.
+70°C
+85°C
Device
X46402
Supply Voltage Limits
2.5V to 3.7V
D.C. OPERATING CHARACTERISTICS (Over the recommended operating conditions unless otherwise specified.)
Symbol
Parameter
I_CC1
V_CC Supply Current
(Read)
I_CC2(3)
V_CC Supply Current
(Write)
I_SB1(1)
I_SB2(1)
I_LI
I_LO
V_IL1(2)
V_IH1(2)
V_IL2(2)
V_IH2(2)
V_OL
V_CC Supply Current
(Standby)
V_CC Supply Current
(Standby)
Input Leakage Current
Output Leakage Current
Input LOW Voltage
Input HIGH Voltage
Input LOW Voltage
Input HIGH Voltage
Output LOW Voltage
Limits
Min.
Max.
1
3
50
1
10
10
–0.5 V_CC x 0.3
V_CC x 0.7 V_CC + 0.5
–0.5 V_CC x 0.1
V_CC x 0.9 V_CC + 0.5
0.4
Units
mA
mA
µA
µA
µA
µA
V
V
V
V
V
Test Conditions
f_SCL = 1MHz,
RESET = V2FAIL = V_CC w/ pull up resistor
V_2MON = V_CC
f_SCL = 1MHz,
RESET = V2FAIL = V_CC w/ pull up resistor
RST = V_SS
V_IL = V_CC x 0.1, V_IH = V_CC x 0.9
f_SCL = 1MHz, f_SDA = 400 KHz
V_SDA = V_SCL = V_2MON = V_CC
Other = GND or V_CC–0.3V
V_IN = V_SS to V_CC
V_OUT = V_SS to V_CC
V_CC = 3.0V
V_CC = 3.0V
V_CC = 3.0V
V_CC = 3.0V
I_OL = 3mA
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