DS1846 Ver la hoja de datos (PDF) - Maxim Integrated
Número de pieza
componentes Descripción
Fabricante
DS1846 Datasheet PDF : 18 Pages
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AC ELECTRICAL CHARACTERISTICS
PARAMETER
SYMBOL CONDITION
SCL Clock Frequency
fSCL
Fast mode
Standard mode
Bus Free Time
Between Stop and
Start Condition
Hold Time (Repeated)
Start Condition
Low Period of SCL
Clock
tBUF
tHD:STA
tLOW
Fast mode
Standard mode
Fast mode
Standard mode
Fast mode
Standard mode
High Period of SCL
Clock
Data Hold Time
Data Setup Time
Rise Time of Both
SDA and SCL Signals
tHIGH
tHD:DAT
tSU:DAT
tR
Fast mode
Standard mode
Fast mode
Standard mode
Fast mode
Standard mode
Fast mode
Standard mode
Fall Time of Both
SDA and SCL Signals
Setup Time for Stop
Condition
Pulse Width of Spikes
(which must be suppressed
by input filter)
Capacitive Load for
each Bus Line
EEPROM Write Time
tF
tSU:STO
tSP
Fast mode
Standard mode
Fast mode
Standard mode
Fast mode
CB
tW
PBRST = VIL
tPB
Reset Active Time
tRST
VCC Detect to RST and tRPD
RST (Power-Down)
VCC Slew Rate
tVF
VCC Detect to RST and tRPU
RST (Power-Up)
VCC Slew Rate
PBRST Stable Low to
tVR
tPDLY
RST and RST
IN Detect (Falling) to
tIPD
NMI
IN Detect (Rising) to
tNMI
NMI
DS1846
(-40°C to +85°C; VCC = 4.5V to 5.5V)
MIN TYP MAX UNITS NOTES
0
400 kHz
4
0
100
1.3
ms
4
4.7
0.6
4.0
1.3
4.7
0.6
4.0
0
0
100
250
20 + 0.1CB
20 + 0.1CB
0.6
4.0
0
ms
ms
ms
0.9
ms
ns
300 ns
1000
300 ns
300
ms
50
ns
4, 5
4
4
4, 6, 7
4
8
8
400 pF
8
3 10
ms
9
150
ns
200
320 550 ms
5
8
ms
16
20
ms
200
320 550 ms
15
0
ns
250 ns
5
8
ms
16
200
700
ms
16 of 18
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