M41T63 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'M41T63' PDF : 40 Pages View PDF
M41T62/63/64/65
DC and AC parameters
Table 17. Oscillator characteristics
Symbol
Parameter
Conditions Min
Typ
Max Unit
VSTA Oscillator start voltage
≤ 10 seconds 1.5
tSTA Oscillator start time
VCC = 3.0 V
Cg XIN capacitance
Cd XOUT capacitance
IC-to-IC frequency variation (1)
–10
V
1
s
12
pF
12
pF
+10 ppm
1. Reference value. TA = 25 °C, VCC = 3.0 V, CMJ-145 (CL = 6 pF, 32,768 Hz) manufactured by Citizen,
CL = Cg • Cd / (Cg + Cd).
Figure 26. Bus timing requirements sequence
SDA
tBUF
SCL
P
tHD:STA
tR
tF
tHIGH
S
tLOW
tSU:DAT
tHD:DAT
tHD:STA
tSU:STA
SR
tSU:STO
P
AI00589
Table 18. AC characteristics
Sym
Parameter(1)
Min
Max Units
fSCL
tLOW
tHIGH
tR
tF
tHD:STA
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)
0
400
kHz
1.3
µs
600
ns
300
ns
300
ns
600
ns
START condition setup time
tSU:STA (only relevant for a repeated start condition)
600
ns
tSU:DAT(2) Data setup time
100
ns
tHD:DAT Data hold time
0
µs
tSU:STO STOP condition setup time
600
ns
Time the bus must be free before a new
tBUF
transmission can start
1.3
µs
trec
Watchdog output pulse width
96
98
ms
1. Valid for ambient operating temperature: TA = –40 to 85 °C; VCC = 1.3 to 4.4 V (except where noted).
2. Transmitter must internally provide a hold time to bridge the undefined region (300 ns max) of the falling
edge of SCL.
Doc ID 10397 Rev 14
35/41
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