m41t83 STMicroelectronics, m41t83 Datasheet - Page 49

• Manufacturer Part Number: m41t83
• Description: Serial I 2c Bus Rtc With Battery Switchover
• Manufacturer: STMicroelectronics

Figure 26. Bus timing requirement sequence
Table 24.
1. Valid for ambient operating temperature: T
2. Transmitter must internally provide a hold time to bridge the undefined region (300ns max) of the falling
t
SU:DAT
t
t
t
t
SU:STO
HD:STA
SU:STA
HD:DAT
t
Sym
t
edge of SCL.
f
t
HIGH
LOW
SCL
BUF
SDA
SCL
t
t
R
F
(2)
tBUF
SCL clock frequency
Clock low period
Clock high period
SDA and SCL rise time
SDA and SCL fall time
START condition hold time
(after this period the first clock pulse is generated)
START condition setup time
(only relevant for a repeated start condition)
Data setup time
Data hold time
STOP condition setup time
Time the bus must be free before a new transmission
can start
AC characteristics
P
S
Parameter
tHD:STA
tR
tLOW
A
tHIGH
= –40 to 85°C; V
(1)
tF
tHD:DAT
CC
tSU:DAT
= 2.38 to 5.5V (except where noted).
Min
600
600
600
100
600
1.3
1.3
0
0
SR
Typ
tSU:STA
tHD:STA
Max
400
300
300
P
AI00589
Units
Hz
µs
ns
ns
ns
ns
ns
ns
µs
ns
µs
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tSU:ST