ATmega88PA Automotive Atmel Corporation, ATmega88PA Automotive Datasheet - Page 321

• Manufacturer Part Number: ATmega88PA Automotive
• Manufacturer: Atmel Corporation

29.7
Table 29-8.
9223B–AVR–09/11
Symbol
V
V
V
V
t
t
t
I
C
f
Rp
t
t
t
t
t
t
t
t
Notes:
r
of
SP
i
SCL
HD;STA
LOW
HIGH
SU;STA
HD;DAT
SU;DAT
SU;STO
BUF
(1)
IL
IH
hys
OL
i
(1)
(1)
(1)
(1)
(1)
Two-wire Serial Interface Characteristics
1. In the Atmel ATmega48PA/88PA/168PA, this parameter is characterized and not 100% tested.
2. Required only for f
3. C
4. f
5. This requirement applies to all Atmel ATmega48PA/88PA/168PA 2-wire Serial Interface operation. Other devices connected
Parameter
Input Low-voltage
Input High-voltage
Hysteresis of Schmitt Trigger Inputs
Output Low-voltage
Rise Time for both SDA and SCL
Output Fall Time from V
Spikes Suppressed by Input Filter
Input Current each I/O Pin
Capacitance for each I/O Pin
SCL Clock Frequency
Value of Pull-up resistor
Hold Time (repeated) START Condition
Low Period of the SCL Clock
High period of the SCL clock
Set-up time for a repeated START condition
Data hold time
Data setup time
Setup time for STOP condition
Bus free time between a STOP and START
condition
to the 2-wire Serial Bus need only obey the general f
CK
b
Two-wire Serial Bus Requirements
= capacitance of one bus line in pF.
= CPU clock frequency
SCL
Table 29-8
Atmel
ments under the noted conditions. Timing symbols refer to
> 100kHz.
IHmin
Atmel ATmega48PA/88PA/168PA [Preliminary]
®
ATmega48PA/88PA/168PA 2-wire Serial Interface meets or exceeds these require-
to V
ILmax
describes the requirements for devices connected to the 2-wire Serial Bus. The
f
CK
(4)
10 pF < C
0.1V
SCL
> max(16f
3 mA sink current
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
f
requirement.
SCL
SCL
SCL
SCL
SCL
SCL
SCL
SCL
SCL
SCL
SCL
SCL
SCL
SCL
SCL
SCL
SCL
SCL
CC
Condition
< V
> 100kHz
> 100kHz
> 100kHz
> 100kHz
> 100kHz
> 100kHz
> 100kHz
> 100kHz
> 100kHz
b
100kHz
100kHz
100kHz
100kHz
100kHz
100kHz
100kHz
100kHz
100kHz
< 400 pF
SCL
i
< 0.9V
, 250kHz)
CC
(3)
(5)
20 + 0.1C
20 + 0.1C
V
----------------------------
V
----------------------------
0.05 V
Figure
CC
CC
0.7 V
3mA
3mA
Min.
-0.5
250
100
-10
4.0
0.6
4.7
1.3
4.0
0.6
4.7
0.6
4.0
0.6
4.7
1.3
–
–
0
0
–
0
0
0
0,4V
0,4V
CC
CC
b
b
29-5.
(2)
(3)(2)
(3)(2)
V
0.3 V
1000ns
------------------ -
CC
300ns
--------------- -
50
3.45
Max
300
250
400
0.4
0.9
C
10
10
C
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
+ 0.5
b
(2)
b
CC
Units
kHz
µA
pF
ns
ns
ns
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
ns
ns
µs
µs
µs
µs
V
V
V
V
321