MB90375 データシートの表示（PDF） - Fujitsu
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MB90375 Datasheet PDF : 140 Pages
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MB90370/375 Series
(4) UART1 to UART3
(VCC = AVCC = CVCC = 3.0 V to 3.6 V, VSS = AVSS = CVSS = 0.0 V, TA = −40 °C to +85 °C)
Parameter
Symbol Pin name
Condition
Value
Unit Remarks
Min Max
Serial clock cycle time
tSCYC UCK1 to UCK3
8 tCP ns
UCK ↓ → UO delay time
Valid UI → UCK ↑
tSLOV
UCK1 to UCK3
UO1 to UO3 CL = 80 pF + 1 TTL
−80
+80
ns
for an output pin of
tIVSH
UCK1 to UCK3 internal shift clock
UI1 to UI3 mode
100
ns
UCK ↑ → valid UI hold time
tSHIX
UCK1 to UCK3
UI1 to UI3
tCP
ns
Serial clock “H” pulse width tSHSL UCK1 to UCK3
4 tCP ns
Serial clock “L” pulse width
tSLSH UCK1 to UCK3
4 tCP ns
UCK ↓ → UO delay time
Valid UI → UCK ↑
tSLOV
UCK1 to UCK3 CL = 80 pF + 1 TTL
UO1 to UO3 for an output pin of
150 ns
tIVSH
UCK1 to UCK3 external shift clock
UI1 to UI3 mode
60
ns
UCK ↑ → valid UI hold time
tSHIX
UCK1 to UCK3
UI1 to UI3
60 ns
Notes : • These are AC ratings in the CLK synchronous mode.
• CL is the load capacitance value connected to pins while testing.
• tCP is the internal operating clock cycle time.
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