Table 3-1. AC Parameters
Parameter
Symbol
Direction
Min
Typ
Max
Unit Notes
Wake Low
Duration
To Atmel
AT88SA10HS
60
-
Signal can be stable in either high or low
levels during extended sleep intervals
µs
t WLO
Wake Delay to
Data Comm.
To Atmel
AT88SA10HS
2.5
45
ms Signal should be stable high for this entire
duration. tWHI must not exceed tTIMEOUT or the
chip will transition to sleep
t WHI
Start pulse
duration
To Atmel
4.1
4.6
4.1
4.6
4.1
4.6
37
4.34
6.0
4.56
8.6
4.56
8.6
4.56
8.6
-
µs
µs
µs
µs
µs
µs
t START
AT88SA10HS
From Atmel
AT88SA10HS
Zero
transmission
high pulse
To Atmel
AT88SA10HS
4.34
6.0
t ZHI
t ZLO
t BIT
From Atmel
AT88SA10HS
Zero
transmission
low pulse
To Atmel
AT88SA10HS
4.34
6.0
From Atmel
AT88SA10HS
Bit time‡
To Atmel
AT88SA10HS
39
µs
If the bit time exceeds tTIMEOUT then Atmel
AT88SA10HS will enter sleep mode and the
Wake token must be resent
From Atmel
AT88SA10HS
41
28
54
60
78
95
µs
µs
Turn around
delay
From Atmel
AT88SA10HS
Atmel AT88SA10HS will initiate the first low
going transition after this time interval
following the end of the Transmit flag
t TURNAROUND
To Atmel
46ms
After Atmel AT88SA10HS transmits the last
bit of a block, system must wait this interval
before sending the first bit of a flag
15µs
45
AT88SA10HS
High side
glitch filter @
active
To Atmel
AT88SA10HS
ns Pulses shorter than this in width will be
ignored by the chip, regardless of its state
when active
t HIGNORE_A
Low side glitch
filter @ active
To Atmel
AT88SA10HS
45
ns Pulses shorter than this in width will be
ignored by the chip, regardless of its state
when active
t LIGNORE_A
Low side glitch
filter @ sleep
To Atmel
2
Pulses shorter than this in width will be
ignored by the chip when in sleep mode
µs
t LIGNORE_S
t TIMEOUT
AT88SA10HS
IO Timeout
To Atmel
AT88SA10HS
45
65
85
ms Refer to Section 4.4.1
Table 3-2. AC Parameters continued
Parameter
Symbol
Direction
Min
Typ
Max
Unit Notes
Watchdog
reset
To Atmel
AT88SA10HS
3
4
5.7
s
Max. time from Wake until chip is forced into
sleep mode. See Section 4.5
t WATCHDOG
Pause Length
-
18
25
32
ms Duration during which the chip will ignore IO
on the bus. See PauseShort command,
Section 5.7
t PAUSE
6
Atmel AT88SA10HS Host Authentication Chip
8595F–SMEM–8/10