PT7C4307 View Datasheet(PDF) - Pericom Semiconductor
Part Name
Description
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PT7C4307 Datasheet PDF : 20 Pages
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Preliminary Data Sheet
PT7C4307
Real-time Clock Module (I2C Bus)
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AC Electrical Characteristics
Sym
Description
VHM
Rising and falling threshold voltage high
VHL
Rising and falling threshold voltage low
Value
Unit
0.8 VCC
V
0.2 VCC
V
Signal
tf
VHM
VLM
tr
Over the operating range
Symbol
Item
fSCL
SCL clock frequency
tSU;STA
START condition set-up time
tHD;STA
START condition hold time
tSU;DAT
Data set-up time (RTC read/write)
tHD;DAT1
Data hold time (RTC write)
tHD;DAT2
Data hold time (RTC read)
tSU;STO
STOP condition setup time
tBUF
Bus idle time between a START and STOP condition
tLOW
When SCL = "L"
tHIGH
When SCL = "H"
tr
Rise time for SCL and SDA
tf
Fall time for SCL and SDA
tSP*
Allowable spike time on bus
CB
Capacitance load for each bus line
* Note: only reference for design
Min.
Typ.
Max. Unit
400
kHz
0.6
µs
0.6
µs
200
ns
35
ns
0
µs
0.6
µs
1.3
µs
1.3
µs
0.6
µs
0.3
µs
0.3
µs
50
ns
400
pF
S
SCL
SDA
tHD;STA
tLOW
fSCL
tSU;DAT
tHIGH
tHD;DAT
Sr
tHD;STA
tSU;STA
P
tSU;STA
tSP
tBUF
tSU;STO
tHD;STA
S Start condition
Sr Restart condition
P Stop condition
PT0206(02/05)
17
Ver: 0
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