m41st84w STMicroelectronics, m41st84w Datasheet - Page 9

• Manufacturer Part Number: m41st84w
• Description: 3.0/3.3v I 2c Serial Rtc With Supervisory Functions
• Manufacturer: STMicroelectronics

Figure 8. Bus Timing Requirements Sequence
Table 2. AC Characteristics
Note: 1. Valid for Ambient Operating Temperature: T
t
Symbol
HD:DAT
t
t
t
t
2. Transmitter must internally provide a hold time to bridge the undefined region (300ns max) of the falling edge of SCL.
HD:STA
SU:DAT
SU:STO
SU:STA
t
t
f
t
HIGH
LOW
SCL
BUF
t
t
R
SDA
SCL
F
(2)
tBUF
SCL Clock Frequency
Time the bus must be free before a new transmission can start
SDA and SCL Fall Time
Data Hold Time
START Condition Hold Time
(after this period the first clock pulse is generated)
Clock High Period
Clock Low Period
SDA and SCL Rise Time
Data Setup Time
START Condition Setup Time
(only relevant for a repeated start condition)
STOP Condition Setup Time
P
S
tHD:STA
tR
Parameter
A
tLOW
= –40 to 85°C; V
tHIGH
tF
(1)
tHD:DAT
CC
= 2.7 to 3.6V (except where noted).
tSU:DAT
SR
tSU:STA
Min
600
600
100
600
600
1.3
1.3
0
0
tHD:STA
Max
400
300
300
P
AI00589
M41ST84W
tSU:STO
Unit
kHz
µs
ns
µs
ns
ns
µs
ns
ns
ns
ns
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