6v to 5.5v) – Rainbow Electronics DS1821 User Manual
Page 15
DS1821
Page 15 of 17
AC ELECTRICAL CHARACTERISTICS:
(-55°C to +125°C; V
DD
=3.6V to 5.5V)
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
NOTES
Temperature Conversion Time
t
CONV
0.4
1.0
s
EEPROM Write Time
t
WR
10
50
ms
Time Slot
t
SLOT
60
120
µs
1
Recovery Time
t
REC
1
µs
1
Write 0 Low Time
t
LOW0
60
120
µs
1
Write 1 Low Time
t
LOW1
1
15
µs
1
Read Data Valid
t
RDV
15
µs
1
Reset Time High
t
RSTH
480
µs
1
Reset Time Low
t
RSTL
480
µs
1,2
Presence Detect High
t
PDHIGH
15
60
µs
1
Presence Detect Low
t
PDLOW
60
240
µs
1
V
DD
Low to Mode Toggle Clock Low
t
PC
100
ns
1,3
Mode Toggle Clock 16 High to V
DD
High
t
CP
100
ns
1
Mode Toggle Clock Pulse Low Time
t
CL
0.1
10
µs
1
Mode Toggle Clock Pulse High Time
t
CH
0.1
µs
1
Mode Toggle Clock High-to-Low or
Low-to-High Transition Time
t
T
100
ns
1
Capacitance
C
IN/OUT
25
pF
NOTES:
1. Refer to timing diagrams in Figure 13.
2. If t
RSTL
> 960
µ
s, a power-on-reset may occur.
3. Time required for part to disable thermostat output.