ST90158 - ELECTRICAL CHARACTERISTICS
SCI TIMING TABLE
(V = 5V ± 10%, T = –40°C to +105°C, C
= 50pF, f
= 24MHz, unless otherwise specified)
DD
A
Load
INTCLK
Value
N° Symbol
Parameter
Condition
Unit
Min
Max
1x mode
16x mode
1x mode
16x mode
1x mode
16x mode
1x mode
16x mode
f
f
/ 8
/ 4
MHz
MHz
s
INTCLK
INTCLK
F
Frequency of RxCKIN
RxCKIN shortest pulse
Frequency of TxCKIN
TxCKIN shortest pulse
RxCKIN
4 x Tck
2 x Tck
Tw
RxCKIN
s
f
f
/ 8
/ 4
MHz
MHz
s
INTCLK
F
TxCKIN
INTCLK
4 x Tck
2 x Tck
Tw
TxCKIN
s
DS (Data Stable) before
rising edge of RxCKIN
1
2
3
Ts
1x mode reception with RxCKIN
Tck / 2
ns
ns
ns
DS
TxCKIN to Data out
delay Time
1x mode transmission with external
Td
2.5 x Tck
D1
D2
clock C
< 50pF
Load
CLKOUT to Data out
delay Time
Td
1x mode transmission with CLKOUT
350
Legend:
Tck = INTCLK period = OSCIN period when OSCIN is not divided by 2;
2 x OSCIN period when OSCIN is divided by 2;
OSCIN period x PLL factor when the PLL is enabled.
SCI TIMING
185/199
9
ETC [ ETC ]
