M41T81
DC and AC parameters
Table 13. AC characteristics
Sym
Parameter(1)
Min
Typ
Max
Units
fSCL
tLOW
tHIGH
tR
SCL clock frequency
Clock low period
0
400
kHz
µs
1.3
600
Clock high period
ns
SDA and SCL rise time
SDA and SCL fall time
START condition hold time
300
300
ns
tF
ns
tHD:STA
600
600
ns
ns
(after this period the first clock pulse is
generated)
START condition setup time
tSU:STA
tSU:DAT
(only relevant for a repeated start condition)
Data setup time
100
0
ns
µs
ns
(2)
tHD:DAT
tSU:STO
Data hold time
STOP condition setup time
600
Time the bus must be free before a new
transmission can start
tBUF
1.3
µs
1. Valid for Ambient Operating Temperature: T = –40 to 85°C; V = 2.0 to 5.5V (except where noted).
A
CC
2. Transmitter must internally provide a hold time to bridge the undefined region (300ns max) of the falling edge of SCL.
25/30
STMICROELECTRONICS [ ST ]
