ATSAM3U-EK Atmel, ATSAM3U-EK Datasheet - Page 1141

• Manufacturer Part Number: ATSAM3U-EK
• Description: KIT EVAL FOR AT91SAM3U CORTEX
• Manufacturer: Atmel
• Type: MCUr

Specifications of ATSAM3U-EK

• Contents: Board
• Processor To Be Evaluated: SAM3U
• Data Bus Width: 32 bit
• Interface Type: RS-232, USB
• Operating Supply Voltage: 3 V
• Silicon Manufacturer: Atmel
• Core Architecture: ARM
• Core Sub-architecture: Cortex - M3
• Silicon Core Number: SAM3U4E
• Silicon Family Name: SAM3U
• Kit Contents: Board CD Docs
• Rohs Compliant: Yes
• For Use With/related Products: AT91SAM3U
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

43.9.8
Table 30 describes the requirements for devices connected to the Two-wire Serial Bus. For timing symbols refer to
43-30.
Table 43-53. Two-wire Serial Bus Requirements
Note:
6430D–ATARM–25-Mar-11
Symbol
V
V
V
V
t
t
C
f
Rp
t
t
t
t
t
t
t
t
r
of
TWCK
LOW
HIGH
HD;STA
SU;STA
HD;DAT
SU;DAT
SU;STO
HD;STA
IL
IH
hys
OL
i
(1)
1. Required only for f
2. C
3.
4.
5. T
Two-wire Serial Interface Characteristics
The TWCK low Period is defined as follow:
The TWCK high period is defined as follows:
Parameter
Input Low-voltage
Input High-voltage
Hysteresis of Schmitt Trigger Inputs
Output Low-voltage
Rise Time for both TWD and TWCK
Output Fall Time from V
Capacitance for each I/O Pin
TWCK Clock Frequency
Value of Pull-up resistor
Low Period of the TWCK clock
High period of the TWCK clock
Hold Time (repeated) START Condition
Set-up time for a repeated START condition
Data hold time
Data setup time
Setup time for STOP condition
Hold Time (repeated) START Condition
CP_MCK
b
= capacitance of one bus line in pF. Per I2C Standard compatibility, C
= MCK Bus Period.
TWCK
> 100 kHz.
IHmin
to V
ILmax
T
low
T
high
=
(
=
(
CLDIV
10 pF < C
(
3 mA sink current
(
f
f
f
f
f
f
f
f
f
CHDIV
f
f
f
f
f
f
f
f
f
TWCK
TWCK
TWCK
TWCK
TWCK
TWCK
TWCK
TWCK
TWCK
TWCK
TWCK
TWCK
TWCK
TWCK
TWCK
TWCK
TWCK
TWCK
Figure 43-30
Condition
×
> 100 kHz
> 100 kHz
> 100 kHz
> 100 kHz
> 100 kHz
> 100 kHz
> 100 kHz
> 100 kHz
> 100 kHz
≤ 100 kHz
≤ 100 kHz
≤ 100 kHz
≤ 100 kHz
≤ 100 kHz
≤ 100 kHz
≤ 100 kHz
≤ 100 kHz
≤ 100 kHz
2
b
×
CKDIV
< 400 pF
2
CKDIV
)
+
)
b
4 )
+
Max = 400pF
×
4 )
T
×
MCK
T
20 + 0.1C
20 + 0.1C
V
------------------------------------- -
MCK
V
------------------------------------- -
VDDIO
0.7xV
VDDIO
t
t
T
T
LOW -
LOW -
0.150
CP_MCK
CP_MCK
3mA
t
t
t
t
t
t
t
t
-0.3
Min
HIGH
HIGH
HIGH
HIGH
HIGH
HIGH
HIGH
HIGH
3mA
(3)
(3)
(4)
(4)
–
0
0
0
-
VDDIO
–
3 x
3 x
–
b
b
0,4V
(1)(2)
(1)(2)
0,4V
SAM3U Series
3 x T
3 x T
0.3 V
V
1000ns
------------------ -
CC
300ns
--------------- -
Max
300
250
400
0.4
C
10
C
CP_MCK
CP_MCK
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
+ 0.3
VDDIO
b
b
Figure
Units
kHz
1141
pF
ns
ns
μs
μs
μs
μs
μs
μs
μs
μs
μs
μs
ns
ns
μs
μs
μs
μs
V
V
V
V
Ω
Ω