LC786821E Datasheet, PDF (20/35 Pages) ON Semiconductor – Compressed Audio Signal Processor IC

LC786821E
Serial Communication Ports
- Characteristics of Serial Communication (SIO) Master Mode Input/Output Timing
tSCL tSCH
1/fSCF
SSPCK
[GP04/GP35/GP51]
(Output)
SSPDO
[GP06/GP34/GP50]
(Output)
tSDO
SSPDI
[GP05/GP36/GP52]
(Input)
tSDS tSDH
Parameter
Symbol Signal Names
Min
SIO Clock Frequency
fSCF
SSPCK
0.008
SIO Clock “H” Period
tSCH SSPCK
100
SIO Clock "L" Period
tSCL
SSPCK
100
Data Output Settle Time
tSDO SSPDO, SSPCK
Data Input Set-Up Time
tSDS
SSPDI, SSPCK
50
Data Input Hold Time
tSDH SSPDI, SSPCK
75
Note: In the case that internal microcontroller operates in normal mode.
Typ Max Unit
5.0 MHz
62500
62500
90
ns
- Conditions for Input/Output Timing of Serial Communication (IIC) Master Mode
SDA
tF
[GP05/GP11/GP41]
(Inout)
SCL
[GP04/GP10/GP40]
(Output)
tLOW
tR
tHD;STA
Start Condition
tSU;DAT
tHIGH
tHD;DAT
tHD;STA
tSU;STA
ReStart Condition
tBUF
tR
tSU;STO
Stop Condition
Normal (100kbps)
Parameter
Symbol
Min
Max
SCLFrequency
fSCL
0
100
Bus Open Time
tBUF
4.7
SCL "L" Period
tLOW
4.7
SCL "H" Period
tHIGH
4.0
Start/ReStart Condition Hold Time
tHD;STA
4.0
Start/ReStart Condition Set-Up Time
tSU;STA
4.7
SDA Hold Time
tHD;DAT
0
SDA Set-Up Time
tSU;DAT
250
SDA,SCL Rise Time
tR
1000
SDA,SCL Fall Time
tF
300
Stop Condition Set-Up Time
tSU;STO
4.0
Note: Cb is the total capacity added to each bus (Unit: pF)
High Speed
(400kbps)
Min
Max
0
400
1.3
1.3
0.6
0.6
0.6
0
100
20+0.1Cb 300
20+0.1Cb 300
0.6
Unit
kHz
s
s
s
s
s
s
ns
ns
ns
s
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