MB95710M Series
MB95770M Series
Document Number: 002-09307 Rev. *D
Page 153 of 172
22.4.8 UART/SIO, Serial I/O Timing
(V
CC
= 3.0 V to 5.5 V, AV
SS
= V
SS
= 0.0 V, T
A
=
−
40 °C to
+
85 °C)
*: See “Source Clock/Machine Clock” for t
MCLK
.
Parameter
Symbol
Pin name
Condition
Value
Unit
Min
Max
Serial clock cycle time
t
SCYC
UCK0, UCK1, UCK2
Internal clock
operation output pin:
C
L
= 80 pF
+
1 TTL
4 t
MCLK
*
—
ns
UCK
↓ →
UO time
t
SLOV
UCK0, UCK1, UCK2,
UO0, UO1, UO2
−
190
+
190
ns
Valid UI
→
UCK
↑
t
IVSH
UCK0, UCK1, UCK2,
UI0, UI1, UI2
2 t
MCLK
*
—
ns
UCK
↑ →
valid UI hold time
t
SHIX
UCK0, UCK1, UCK2,
UI0, UI1, UI2
2 t
MCLK
*
—
ns
Serial clock “H” pulse width
t
SHSL
UCK0, UCK1, UCK2
External clock
operation output pin:
C
L
= 80 pF
+
1 TTL
4 t
MCLK
*
—
ns
Serial clock “L” pulse width
t
SLSH
UCK0, UCK1, UCK2
4 t
MCLK
*
—
ns
UCK
↓ →
UO time
t
SLOV
UCK0, UCK1, UCK2,
UO0, UO1, UO2
—
190
ns
Valid UI
→
UCK
↑
t
IVSH
UCK0, UCK1, UCK2,
UI0, UI1, UI2
2 t
MCLK
*
—
ns
UCK
↑ →
valid UI hold time
t
SHIX
UCK0, UCK1, UCK2,
UI0, UI1, UI2
2 t
MCLK
*
—
ns
0.2 V
CC
0.2 V
CC
0.8 V
CC
t
SLOV
t
IVSH
t
SHIX
0.8 V
CC
0.2 V
CC
UCK0,
UCK1,
UCK2
UO0,
UO1,
UO2
UI0,
UI1,
UI2
0.7 V
CC
0.3 V
CC
0.7 V
CC
0.3 V
CC
t
SCYC
• Internal shift clock mode
