Rainbow-electronics DS1339 Manual do Utilizador Página 14
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DS1339
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ABSOLUTE MAXIMUM RATINGS*
Voltage Range on Any Pin Relative to Ground -0.3V to +6.0V
Operating Temperature Range -40°C to +85°C
Storage Temperature Range -55°C to +125°C
Soldering Temperature Range See IPC/JEDEC J-STD-020A
*This is a stress rating only and functional operation of the device at these or any other conditions beyond those indicated in the operation
sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods of time can affect reliability.
RECOMMENDED DC OPERATING CONDITIONS (T
A
= -40°C to +85°C) (Note 12)
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
Supply Voltage, DS1339-2 V
CC
1.8 2.0 2.2 V
Supply Voltage, DS1339-3 V
CC
2.7 3.0 3.3 V
Supply Voltage, DS1339-33 V
CC
2.97 3.3 3.63 V
Backup Supply Voltage V
BACKUP
1.3 3.0 3.7 V
Logic 1 V
IH
0.7 V
CC
V
CC
+ 0.5 V
Logic 0 V
IL
-0.5 0.3 V
CC
V
Power-Fail Voltage, DS1339-2 V
PF
1.58 1.70 1.80 V
Power-Fail Voltage, DS1339-3 V
PF
2.45 2.59 2.70 V
Power-Fail Voltage, DS1339-33 V
PF
2.70 2.85 2.97 V
DC ELECTRICAL CHARACTERISTICS
(V
CC
= MIN to MAX, T
A
= -40°C to +85°C) (Note 12)
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
Input Leakage I
LI
1
mA
1
I/O Leakage I
LO
1
mA
2
Logic 0 Out V
OL
= 0.4V, V
CC
> V
CC
Min (-3, -33), V
CC
≥ 2.0V (-2)
I
OL
3mA2
Logic 0 Out V
OL
= 0.2 (V
CC
)
1.8V < V
CC
< 2.0V (DS1339-2)
I
OL
3mA2
Logic 0 Out V
OL
- 0.2 (V
CC
)
1.3V < V
CC
< 1.8V (DS1339-2)
I
OL
250 µA 2
V
CC
Active Current I
CCA
450
mA
3
Vcc Standby Current I
CCS
80 150
mA
4
Trickle Charge Resistor Register
10h = A5h, V
CC
= Typ, V
BACKUP
= 0V
R1 250
Trickle Charge Resistor Register
10h = A6h, V
CC
= Typ, V
BACKUP
= 0V
R2 2000
Trickle Charge Resistor Register
10h = A7h, V
CC
= Typ, V
BACKUP
= 0V
R3 4000
V
BACKUP
Leakage Current I
BKLKG
25 100 nA
DC ELECTRICAL CHARACTERISTICS (V
CC
= 0V, T
A
= -40°C to +85°C) (Note 12)
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
V
BACKUP
Current EOSC = 0, SQW Off
I
BKOSC
400 700 nA 10
V
BACKUP
Current EOSC = 0, SQW On
I
BKSQW
600 1000 nA 10
V
BACKUP
Current EOSC = 1
I
BKDR
10 100 nA 10
- Serial Real-Time Clock 1
- DESCRIPTION 2
- OPERATION 2
- Figure 1. BLOCK DIAGRAM 2
- SIGNAL DESCRIPTIONS 3
- CLOCK ACCURACY 4
- ADDRESS MAP 4
- 5 of 18 5
- TIME AND DATE OPERATION 6
- Figure 3. ALARM MASK BITS 7
- SPECIAL PURPOSE REGISTERS 7
- CONTROL REGISTER (0Eh) 7
- STATUS REGISTER (0Fh) 8
- TRICKLE CHARGE REGISTER (10h) 9
- 2-WIRE SERIAL DATA BUS 11
- 12 of 18 12
- 13 of 18 13
- W ), which, for 13
- ABSOLUTE MAXIMUM RATINGS* 14
- DC ELECTRICAL CHARACTERISTICS 14
- CRYSTAL SPECIFICATIONS* 15
- CHIP AND PACKAGE INFORMATION 15
- AC ELECTRICAL CHARACTERISTICS 16
- Figure 10. TIMING DIAGRAM 17
- 18 of 18 18
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