Datasheet

 2002-2017 Microchip Technology Inc. DS20001732E-page 5
MCP3221
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
A
= -40°C to +85°C.
Parameter Sym. Min. Typ. Max. Units Conditions
I
2
C Standard Mode
Clock Frequency f
SCL
0 — 100 kHz
Clock High Time T
HIGH
4000 — — ns
Clock Low Time T
LOW
4700 — — ns
SDA and SCL Rise Time T
R
— — 1000 ns From V
IL
to V
IH
(Note 1)
SDA and SCL Fall Time T
F
— — 300 ns From V
IL
to V
IH
(Note 1)
Start Condition Hold Time T
HD:STA
4000 — — ns
Start Condition Setup Time T
SU:STA
4700 — — ns
Data Input Setup Time T
SU:DAT
250 — — ns
Stop Condition Setup Time T
SU:STO
4000 — — ns
Stop Condition Hold time T
HD:STD
4000 — — ns
Output Valid from Clock T
AA
— — 3500 ns
Bus Free Time T
BUF
4700 — — ns Note 2
Input Filter Spike Suppression T
SP
— — 50 ns SDA and SCL pins (Note 1)
I
2
C Fast Mode
Clock Frequency F
SCL
0 — 400 kHz
Clock High Time T
HIGH
600 — — ns
Clock Low Time T
LOW
1300 — — ns
SDA and SCL Rise Time T
R
20 + 0.1C
B
— 300 ns From V
IL
to V
IH
(Note 1)
SDA and SCL Fall Time T
F
20 + 0.1C
B
— 300 ns From V
IL
to V
IH
(Note 1)
Start Condition Hold Time T
HD:STA
600 — — ns
Start Condition Setup Time T
SU:STA
600 — — ns
Data Input Hold Time T
HD:DAT
0—0.9ms
Data Input Setup Time T
SU:DAT
100 — — ns
Stop Condition Setup Time T
SU:STO
600 — — ns
Stop Condition Hold Time T
HD:STD
600 — — ns
Output Valid from Clock T
AA
— — 900 ns
Bus Free Time T
BUF
1300 — — ns Note 2
Input Filter Spike Suppression T
SP
— — 50 ns SDA and SCL pins (Note 1)
Note 1: This parameter is periodically sampled and not 100% tested.
2: 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