MB95120MB Series
(6) UART/SIO, Serial I/O Timing
(VCC = 5.0 V 10%, AVSS = VSS = 0.0 V, TA = − 40 °C to + 105 °C)
Value
Parameter
Symbol
Pin name
Condition
Unit
Min
Max
⎯
Serial clock cycle time
UCK ↓ → UO time
tSCYC
tSLOV
tIVSH
tSHIX
tSHSL
tSLSH
tSLOV
tIVSH
tSHIX
UCK0
UCK0, UO0
UCK0, UI0
UCK0, UI0
UCK0
4 tMCLK*
− 190
ns
ns
ns
ns
ns
ns
ns
ns
ns
Internal clock
operation output pin :
CL = 80 pF + 1TTL.
+190
⎯
Valid UI → UCK ↑
2 tMCLK*
2 tMCLK*
4 tMCLK*
4 tMCLK*
0
UCK ↑ → valid UI hold time
Serial clock “H” pulse width
Serial clock “L” pulse width
UCK ↓ → UO time
⎯
⎯
UCK0
⎯
External clock
operation output pin :
CL = 80 pF + 1TTL.
UCK0, UO0
UCK0, UI0
UCK0, UI0
190
⎯
Valid UI → UCK ↑
2 tMCLK*
2 tMCLK*
UCK ↑ → valid UI hold time
⎯
* : Refer to “ (2) Source Clock/Machine Clock” for tMCLK.
• Internal shift clock mode
t
SCYC
2.4 V
UCK0
0.8 V
0.8 V
t
SLOV
UO0
UI0
2.4 V
0.8 V
t
IVSH
tSHIX
0.8 VCC 0.8 VCC
0.2 VCC 0.2 VCC
• External shift clock mode
UCK0
t
SLSH
t
SHSL
0.8 VCC 0.8 VCC
0.2 VCC 0.2 VCC
t
SLOV
UO0
UI0
2.4 V
0.8 V
t
IVSH
tSHIX
0.8 VCC 0.8 VCC
0.2 VCC 0.2 VCC
50
FUJITSU [ FUJITSU ]
