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參數(shù)資料
| 型號(hào)： | MCP3221T |
| 廠商： | Microchip Technology Inc. |
| 英文描述： | 560KBITS BRAM 400000 SYSTEM GATES 404 - - NOT RECOMMENDED for NEW DESIGN |
| 中文描述： | 低功耗12位A / D轉(zhuǎn)換器具有I2C⑩接口 |
| 文件頁(yè)數(shù)： | 4/27頁(yè) |
| 文件大小： | 520K |
| 代理商： | MCP3221T |
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MCP3221
DS21732B-page 4
2003 Microchip Technology Inc.
TIMING SPECIFICATIONS
FIGURE 1-1:
Standard and Fast Mode Bus Timing Data.
Electrical Characteristics:
All parameters apply at V
DD
= 2.7V - 5.5V, V
SS
= GND, T
AMB
= -40°C to +85°C.
Parameters
Sym
Min
Typ
Max
Units
Conditions
I
2
C Standard Mode
Clock frequency
f
SCL
T
HIGH
T
LOW
T
R
T
F
T
HD:STA
T
SU:STA
T
SU:DAT
T
SU:STO
T
HD:STD
T
AA
T
BUF
T
SP
0
—
100
kHz
Clock high time
4000
—
—
ns
Clock low time
4700
—
—
ns
SDA and SCL rise time
—
—
1000
ns
From V
IL
to V
IH
(
Note 1
)
From V
IL
to V
IH
(
Note 1
)
SDA and SCL fall time
—
—
300
ns
START condition hold time
4000
—
—
ns
START condition setup time
4700
—
—
ns
Data input setup time
250
—
—
ns
STOP condition setup time
4000
—
—
ns
STOP condition hold time
4000
—
—
ns
Output valid from clock
—
—
3500
ns
Bus free time
4700
—
—
ns
Note 2
Input filter spike suppression
I
2
C Fast Mode
—
—
50
ns
SDA and SCL pins (
Note 1
)
Clock frequency
F
SCL
T
HIGH
T
LOW
T
R
T
F
T
HD:STA
T
SU:STA
T
HD:DAT
T
SU:DAT
T
SU:STO
T
HD:STD
T
AA
T
BUF
T
SP
0
—
400
kHz
Clock high time
600
—
—
ns
Clock low time
1300
—
—
ns
SDA and SCL rise time
20 + 0.1C
B
20 + 0.1C
B
600
—
300
ns
From V
IL
to V
IH
(Note 1)
From V
IL
to V
IH
(Note 1)
SDA and SCL fall time
—
300
ns
START condition hold time
—
—
ns
START condition setup time
600
—
—
ns
Data input hold time
0
—
0.9
ms
Data input setup time
100
—
—
ns
STOP condition setup time
600
—
—
ns
STOP condition hold time
600
—
—
ns
Output valid from clock
—
—
900
ns
Bus free time
1300
—
—
ns
Note 2
Input filter spike suppression
—
—
50
ns
SDA and SCL pins
(Note 1)
Note
1:
2:
This parameter is periodically sampled and not 100% tested.
Time the bus must be free before a new transmission can start.
T
F
T
HIGH
V
HYS
T
R
T
SU:STA
T
SP
T
HD:STA
T
LOW
T
HD:DAT
T
SU:DAT
T
SU:STO
T
BUF
T
AA
SCL
SDA
IN
SDA
OUT
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