MC68HC68T1 Datasheet, PDF (3/26 Pages) Motorola, Inc – Real-Time Clock plus RAM with Serial Interface

ABSOLUTE MAXIMUM RATINGS* (Voltages Referenced to VSS)
Symbol
Parameter
Value
Unit
VDD DC Supply Voltage
– 0.5 to + 7.0
V
Vin
DC Input Voltage (except Line Input**)
– 0.5 to VDD + 0.5 V
Vout DC Output Voltage
– 0.5 to VDD + 0.5 V
Iin
DC Input Current, per Pin
± 10
mA
Iout DC Output Current, per Pin
± 10
mA
IDD DC Supply Current, VDD and VSS Pins
± 30
mA
PD
Power Dissipation, per Package***
500
mW
Tstg Storage Temperature
– 65 to + 150
°C
TL
Lead Temperature (10–Second Soldering)
260
°C
* Maximum Ratings are those values beyond which damage to the device may occur.
** See Electrical Characteristics Table.
*** Power Dissipation Temperature Derating:  12 mW/_C from 65 to 85_C.
This device contains circuitry to protect the
inputs against damage due to high static
voltages or electric fields. However, pre-
cautions must be taken to avoid applications of
any voltage higher than maximum rated volt-
ages to this high–impedance circuit. For proper
operation, Vin and Vout should be constrained
to the range VSS ≤ (Vin or Vout) ≤ VDD.
Unused inputs must always be tied to an
appropriate logic voltage level (e.g., either VSS
or VDD). Unused outputs must be left open.
ELECTRICAL CHARACTERISTICS (TA = – 40 to + 85_C, Voltages Referenced to VSS)
Symbol
Parameter
VDD
V(stdby)
VIL
Power Supply Voltage Range
Minimum Standby (Timekeeping) Voltage*
Maximum Low–Level Input Voltage
Test Condition
VIH Minimum High–Level Input Voltage
Vin
VOL
VOH
Iin
IIL
IIH
IOZ
IDD
IDD
Maximum Input Voltage, Line Input
Power Sense Mode
Maximum Low–Level Output Voltage
Iout = 0 mA
Iout = 1.6 mA
Minimum High–Level Output Voltage
Iout = 0 mA
Iout = 1.6 mA
Maximum Input Current, Except SS
Vin = VDD or VSS
Maximum Low–Level Input Current, SS Vin = VSS
Maximum Pull–Down Current, SS
Vin = VDD
Maximum Three–State Leakage Current
Maximum Quiescent Supply Current
Maximum RMS Operating Supply Current
Crystal Operation
Vout = VDD _or VSS
Vin = VDD _or VSS, All Input; Iout = 0 mA
Iout = 0 mA,
Vin = VDD or VSS, all
inputs except XTALin,
Clock Out Disabled,
No Serial Access Cycles
fXTALin _{= 32 kHz}
fXTALin _{= 1 MHz}
fXTALin _{= 2 MHz}
fXTALin _{= 4 MHz}
Maximum RMS Operating Supply Current
External Frequency Source
Driving XTALin, XTALout Open
Iout = 0 mA,
Vin = VDD or VSS,
Clock Out Disabled,
No Serial Access
Cycles
fXTALin _{= 32 kHz}
fXTALin _{= 1 MHz}
fXTALin _{= 2 MHz}
fXTALin _{= 4 MHz}
VDD
V
—
—
3.0
4.5
6.0
3.0
4.5
6.0
5.0
4.5
4.5
6.0
6.0
6.0
6.0
6.0
5.0
5.0
Guaranteed
Limit
3.0 to 6.0
2.2
0.9
1.35
1.8
2.1
3.15
4.2
12
0.1
0.4
4.4
3.7
±1
– 1.0
100
± 10
50
0.1
0.6
0.84
1.2
Unit
V
V
V
V
V p–p
V
V
mA
mA
mA
mA
mA
mA
0.024
0.12
0.24
0.5
Ibatt Maximum RMS Standby Current
Crystal Operation
VBATT = 3.0 V,
VSYS = 0.0 V,
VDD = 0.0 V,
fXTALin _{= 32 kHz 0.0}
25
mA
fXTALin _{= 1 MHz}
250
fXTALin _{= 2 MHz}
360
Iout = 0 mA,
fXTALin _{= 4 MHz}
600
Vin = Don’t Care, all inputs except XTALin,
Clock Out Disabled, No Serial Access Cycles
* Timekeeping function only, no read/write accesses. Data in the registers and RAM retained.
MOTOROLA
MC68HC68T1
3