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參數(shù)資料
| 型號： | MC68HC68 |
| 廠商： | Motorola, Inc. |
| 英文描述： | Real-Time Clock plus RAM with Serial Interface |
| 中文描述： | 實時時鐘加RAM的串行接口 |
| 文件頁數(shù)： | 3/26頁 |
| 文件大?。?/td> | 342K |
| 代理商： | MC68HC68 |
MC68HC68T1
MOTOROLA
3
ABSOLUTE MAXIMUM RATINGS*
(Voltages Referenced to VSS)
Symbol
Parameter
Value
Unit
VDD
Vin
Vout
Iin
Iout
IDD
PD
Tstg
TL
*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.
DC Supply Voltage
– 0.5 to + 7.0
V
DC Input Voltage (except Line Input**)
– 0.5 to VDD + 0.5
– 0.5 to VDD + 0.5
±
10
V
DC Output Voltage
V
DC Input Current, per Pin
mA
DC Output Current, per Pin
±
10
mA
DC Supply Current, VDD and VSS Pins
Power Dissipation, per Package***
±
30
mA
500
mW
Storage Temperature
– 65 to + 150
°
C
Lead Temperature (10–Second Soldering)
260
°
C
ELECTRICAL CHARACTERISTICS
(TA = – 40 to + 85 C, Voltages Referenced to VSS)
Symbol
Parameter
Test Condition
VDD
V
Guaranteed
Limit
Unit
VDD
V(stdby)
VIL
Power Supply Voltage Range
—
3.0 to 6.0
V
Minimum Standby (Timekeeping) Voltage*
—
2.2
V
Maximum Low–Level Input Voltage
3.0
4.5
6.0
0.9
1.35
1.8
V
VIH
Minimum High–Level Input Voltage
3.0
4.5
6.0
2.1
3.15
4.2
V
Vin
VOL
Maximum Input Voltage, Line Input
Power Sense Mode
5.0
12
V p–p
Maximum Low–Level Output Voltage
Iout = 0 A
Iout = 1.6 mA
4.5
0.1
0.4
V
VOH
Minimum High–Level Output Voltage
Iout = 0 A
Iout = 1.6 mA
4.5
4.4
3.7
V
Iin
IIL
IIH
IOZ
IDD
IDD
Maximum Input Current, Except SS
Vin = VDD or VSS
Vin = VSS
Vin = VDD
Vout = VDD or VSS
6.0
±
1
A
Maximum Low–Level Input Current, SS
6.0
– 1.0
A
Maximum Pull–Down Current, SS
6.0
100
A
Maximum Three–State Leakage Current
6.0
±
10
A
Maximum Quiescent Supply Current
Vin = VDD or VSS, All Input; Iout = 0 A
Iout = 0 A,
Vin = VDD or VSS, all
inputs except XTALin,
Clock Out Disabled,
No Serial Access Cycles
6.0
50
A
Maximum RMS Operating Supply Current
Crystal Operation
fXTALin = 32 kHz
fXTALin = 1 MHz
fXTALin = 2 MHz
fXTALin = 4 MHz
5.0
0.1
0.6
0.84
1.2
mA
Maximum RMS Operating Supply Current
External Frequency Source
Driving XTALin, XTALout Open
Iout = 0 A,
Vin = VDD or VSS,
Clock Out Disabled,
No Serial Access
Cycles
fXTALin = 32 kHz
fXTALin = 1 MHz
fXTALin = 2 MHz
fXTALin = 4 MHz
5.0
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,
Iout = 0 A,
Vin = Don’t Care, all inputs except XTALin,
Clock Out Disabled, No Serial Access Cycles
fXTALin = 32 kHz
fXTALin = 1 MHz
fXTALin = 2 MHz
fXTALin = 4 MHz
0.0
25
250
360
600
A
* Timekeeping function only, no read/write accesses. Data in the registers and RAM retained.
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.
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