M41T65 STMICROELECTRONICS [STMicroelectronics], M41T65 Datasheet - Page 35

• Manufacturer Part Number: M41T65
• Description: Serial real-time clocks with alarm
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

M41T62/63/64/65
Table 17.
1. Reference value. T
Figure 26. Bus timing requirements sequence
Table 18.
1. Valid for ambient operating temperature: T
2. Transmitter must internally provide a hold time to bridge the undefined region (300 ns max) of the falling
Symbol
SDA
SCL
t
SU:DAT
V
t
t
t
t
t
C
SU:STO
edge of SCL.
HD:STA
SU:STA
HD:DAT
STA
C
C
t
STA
Sym
t
f
t
HIGH
LOW
L
t
SCL
BUF
g
d
t
t
rec
R
F
= C
t BUF
(2)
g
Oscillator start voltage
Oscillator start time
XIN capacitance
XOUT capacitance
IC-to-IC frequency variation
• C
P
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
Watchdog output pulse width
d
Oscillator characteristics
AC characteristics
transmission can start
/ (C
g
+ C
A
Parameter
= 25 °C, V
S
d
).
t HD:STA
t R
CC
Doc ID 10397 Rev 14
= 3.0 V, CMJ-145 (C
Parameter
t LOW
t HIGH
(1)
t F
A
= –40 to 85 °C; V
≤ 10 seconds
(1)
V
Conditions
CC
= 3.0 V
t HD:DAT
L
= 6 pF, 32,768 Hz) manufactured by Citizen,
t SU:DAT
CC
= 1.3 to 4.4 V (except where noted).
Min
–10
1.5
SR
Min
600
600
600
100
600
DC and AC parameters
t SU:STA
1.3
1.3
96
Typ
0
0
12
12
t HD:STA
Max
400
300
300
98
Max
+10
1
P
t SU:STO
Units
kHz
Unit
ppm
AI00589
ms
µs
ns
ns
ns
ns
ns
ns
µs
ns
µs
pF
pF
35/41
V
s