Rainbow Electronics DS2705 - Manual (Page 4)

DS2705: SHA-1 Authentication Master
4 of 18
AC ELECTRICAL CHARACTERISTICS: SLAVE 1-Wire INTERFACE
(2.5V £ V
DD
£ 5.5V, T
A
= -20 °C to +85°C.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
STANDARD BUS TIMING
Time Slot t
SLOT
60 120 ms
Recovery Time t
REC
1 ms
Write-0 Low Time t
LOW0
60 120 ms
Write-1 Low Time t
LOW1
1 15 ms
Read-Data Valid t
RDV
15 ms
Reset-Time High t
RSTH
480 ms
Reset-Time Low t
RSTL
480 960 ms
Presence-Detect High t
PDH
15 60 ms
Presence-Detect Low t
PDL
60 240 ms
OVERDRIVE BUS TIMING
Time Slot t
SLOT
6 16 ms
Recovery Time t
REC
1 ms
Write-0 Low Time t
LOW0
6 16 ms
Write-1 Low Time t
LOW1
1 2 ms
Read-Data Valid t
RDV
2 ms
Reset-Time High t
RSTH
48 ms
Reset-Time Low t
RSTL
48 80 ms
Presence-Detect High t
PDH
2 6 ms
Presence-Detect Low t
PDL
8 24 ms