YAC526 Datasheet, PDF (8/14 Pages) YAMAHA CORPORATION – Electric Variable Resistance 3

6. AC characteristics（CL=20pF）
Item
Serial clock frequency
Serial clock pulse width high
Serial clock pulse width Low
SDATAI set up time
SDATAI hold time
CSN pulse width High
CSN set up time
CSN hold time
SDATAO data output set up time
SDATAO output delay time
SDATAO output data hold time (data output stop)
CSN, SCLK rise time
CSN, SCLK fall time
Zero-cross time out (Zero-cross MODE=A, C)
Zero-cross time out (Zero-cross MODE=B)
Regulation time until the data writing from a power
supply injection (more than AVSS=90%) to LSI
becomes effective. (CREF=10μF)
YAC526
Symbol
SCLK
tPH
tPL
tSDVS
tSDH
tCSPH
tCSVS
tLTH
tCSH
tSSD
tCSDH
tR
tF
tTM1
tTM2
tPUP
Min.
0
500
500
200
200
1000
500
200
Typ.
20
10
200
Max.
1.0
300
300
200
100
100
400
Unit
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ms
ms
ms
CSN
SCLK
SDATAI
90%
VIL
tF
10%
tCSVS
VIH
VIL
tPH
VIH
VIL
tPL
tSDVS
VIH
VIL
tR
90%
VIL
10%
tSDH
VIH
VIH
VIL
VIL
SDATAO
VOL
tCSH
MSB
VOL
tSSD
Fig 1 Serial port timing
tLTH
tCSPH
VIH
VIH
VIL
VIL
tCSDH
VOL
8