SM9403BM Datasheet, PDF (10/18 Pages) Nippon Precision Circuits Inc – DVDRAM Servo-amplifier LSI

SM9403BM
Serial Interface Characteristics (SCLK, SDATA, SENB)
V_CC = 5V ± 5%, GND = 0V, T_a = 0 to 70°C
Parameter
Rating
Symbol
Condition
Unit
min
typ
max
SCLK pulse cycle
SCLK HIGH-level pulsewidth
S C L K L OW -level pulsewidth
SENB setup time
SENB hold time
S DATA setup time
S DATA hold time
ACK setup time¹
ACK hold time¹
SENB interval
t_{c y S C K}
t_{w h S C K}
t_{w l S C K}
t_{s S E N}
t_{h S E N}
t_{s S DA}
t_{h S DA}
t_{sAC K}
t_{h AC K}
t_{i n S E N}
100
–
40
–
40
–
20
–
40
–
15
–
15
–
0
–
–
–
100
–
–
ns
–
ns
–
ns
–
ns
–
ns
–
ns
–
ns
20
ns
50
ns
–
ns
1. ACK is the acknowledge output (n-channel open-drain). LOW -level output when the data received is valid.
S D ATA load capacitance is 15pF.
SENB
SCLOCK
SDATA
Controller
SDATA
Port
tsSEN twhSCK twlCLK
tcySCK
tsSDA thSDA
bit 0
bit 1
LSB
tinSEN
bit 15
MSB
thSEN
tsACK
thACK
ACK
High Impedance
NIPPON PRECISION CIRCUITS—10