MB89120 データシートの表示（PDF） - Fujitsu
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MB89120 Datasheet PDF : 47 Pages
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MB89120/120A Series
(6) Serial I/O Timings
Parameter
Serial clock cycle time
SCK ↓ → SO time
Valid SI → SCK ↑
SCK ↑ → Valid SI hold time
Serial clock “H” pulse width
Serial clock “L” pulse width
SCK ↓ → SO time
Valid SI → SCK ↑
SCK ↑ → Valid SI hold time
Symbol
tSCYC
tSLOV
tIVSH
tSHIX
tSHSL
tSLSH
tSLOV
tIVSH
tSHIX
(VCC = +5.0 V ±10%, AVSS = VSS = 0.0 V, TA = −40 °C to +85 °C)
Value
Pin
Condition
Unit Remarks
Min. Max.
SCK
2 tinst*
µs
SCK, SO Internal clock −200 200 ns
SI, SCK operation
200
ns
SCK, SI
200
ns
SCK
tinst*
tinst*
SCK, SO
External clock
operation
0
SI, SCK
200
µs
µs
200 ns
ns
SCK, SI
200
ns
* : For information on tinst, see “ (4) Instruction Cycles.”
Internal Shift Clock Mode
tSCYC
SCK
0.8 V
2.4 V
0.8 V
tSLOV
2.4 V
SO
0.8 V
SI
External Shift Clock Mode
SCK
tIVSH
0.8 VCC
0.2 VCC
tSLSH
0.2 VCC
tSLOV
0.2 VCC
2.4 V
SO
0.8 V
tSHIX
0.8 VCC
0.2 VCC
tSHSL
0.8 VCC
0.8 VCC
tIVSH
tSHIX
0.8 VCC
0.8 VCC
SI
0.2 VCC
0.2 VCC
35
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