MCP3421 Microchip Technology, MCP3421 Datasheet - Page 19

• Manufacturer Part Number: MCP3421
• Description: 18-Bit Analog-to-Digital Converter with I2C Interface and On-Board Reference
• Manufacturer: Microchip Technology

TABLE 5-4:
© 2006 Microchip Technology Inc.
Electrical Specifications: Unless otherwise specified, all limits are specified for T
V
Clock frequency
Clock high time
Clock low time
SCL rise time
SCL fall time
SDA rise time
SDA fall time
START condition hold time
Repeated START condition
setup time
Data hold time
Data input setup time
STOP condition setup time
STOP condition hold time
Output valid from clock
(Notes 2 and 3)
Bus free time
Input filter spike suppression
(Note 5)
Note 1:
High Speed Mode
SS
= 0V, V
2:
3:
4:
5:
Parameters
This parameter is ensured by characterization and not 100% tested.
This specification is not a part of the I
plus SDA Fall (or rise) time:
If this parameter is too short, it can create an unintended Start or Stop condition to other devices on the bus line. If this
parameter is too long, Clock Low time (T
For Data Input: This parameter must be longer than t
Clock Low time (T
For Data Output: This parameter is characterized, and tested indirectly by testing T
This parameter is ensured by characterization and not 100% tested. This parameter is not available for Standard Mode.
IN
(Note 1)
(Note 1)
(Note 1)
(Note 1)
+ = V
(Note 4)
I
2
IN
C SERIAL TIMING SPECIFICATIONS (CONTINUED)
- = V
REF
LOW
/2.
) can be affected.
T F: DATA
T
T SU:STO
T HD:STD
T HD:STA
T HD:DAT
T SU:DAT
T R: DAT
T HIGH
T LOW
Sym
SU:STA
T BUF
f
T AA
T SP
SCL
T R
T F
T AA
= T
HD:DAT
2
C specification. This specification is equivalent to the Data Hold Time (
120
160
320
160
160
160
160
160
Min
60
10
—
—
—
—
—
0
0
0
0
LOW
+ T
) can be affected.
F
(
OR
Typ
T
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
SP
R
).
. If this parameter is too long, the Data Input Setup (T
Max
160
160
150
150
310
3.4
1.7
40
80
40
80
80
80
70
10
—
—
—
—
—
—
—
—
A
= -40 to +85°C, V
Units
MHz
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
AA
C
C
C
C
C
C
From V
C
From V
C
From V
C
From V
C
After this period, the first clock
pulse is generated
Only relevant for repeated Start
condition
C
C
C
C
conditions.
SDA and SCL pins
parameter.
Time between START and STOP
b
b
b
b
b
b
b
b
b
b
b
b
b
b
DD
= 100 pF
= 400 pF
= 100 pF
= 400 pF
= 100 pF
= 400 pF
= 400 pF
= 400 pF
= 400 pF
= 400 pF
= 100 pF
= 400 pF
= 100 pF
= 400 pF
MCP3421
= +2.7V, +3.3V or +5.0V,
IL
IH
IL
IH
to V
to V
to V
to V
DS22003B-page 19
IH
IH
IL
IL
Conditions
,C
,C
,C
,C
b
b
b
b
= 100 pF
= 100 pF
= 100 pF
= 100 pF
SU:DAT
T HD:DAT
) or
)