ATSHA204 ATMEL [ATMEL Corporation], ATSHA204 Datasheet - Page 27

• Manufacturer Part Number: ATSHA204
• Description: Atmel CryptoAuthentication
• Manufacturer: ATMEL [ATMEL Corporation]

7.3
AC Parameters – All I/O Interfaces
Figure 7-1. AC Timing Diagram – All I/O Interfaces
Table 7-2.
Note:
Suppression
Parameter
Wake Low
Duration
Wake High
Delay to
Data Comm.
High Side
Glitch Filter
@ Active
Low Side
Glitch Filter
@ Active
High Side
Glitch Filter
@ Sleep
Low Side
Glitch Filter
@ Sleep
Watchdog
Reset
Noise
Wake
1.
AC Parameters – All I/O Interfaces
These parameters are guaranteed through characterization, but not tested.
Symbol
t
t
t
t
t
t
t
WLO
WHI
HIGNORE_A
LIGNORE_A
HIGNORE_S
LIGNORE_S
WATCHDOG
t
LIGNORE
t
WLO
Direction
To Crypto
Authentication
To Crypto
Authentication
To Crypto
Authentication
To Crypto
Authentication
To Crypto
Authentication
To Crypto
Authentication
To Crypto
Authentication
t
WHI
45
45
15
15
t
Min
Data Comm
2.5
0.7
HIGNORE
60
(1)
(1)
(1)
(1)
Typ
1.3
Max
1.7
-
Unit
ms
µs
ns
ns
µs
µs
s
Atmel ATSHA204 [DATASHEET]
Notes
SDA can be stable in either high or low
levels during extended sleep intervals.
SDA should be stable high for this entire
duration.
Pulses shorter than this in width will be
ignored by the device, regardless of its
state when active.
Pulses shorter than this in width will be
ignored by the device, regardless of its
state when active.
Pulses shorter than this in width will be
ignored by the device when in sleep
mode.
Pulses shorter than this in width will be
ignored by the device when in sleep
mode.
Max. time from wake until device is
forced into sleep mode (See Section
8.1.6).
8740D−CRYPTO−3/12
27