National CP3BT26 ユーザーズマニュアル
249
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CP3
BT26
30.8
UART TIMING
Figure 114.
UART Asynchronous Mode Timing
Table 85
UART Signals
Symbol Figure
Description
Reference
Min (ns)
Max (ns)
UART Input Signals
t
Is
Input setup time
RXD (asynchronous mode)
RXD (asynchronous mode)
Before Rising Edge (RE)
on CLK
on CLK
-
t
Ih
Input hold time
RXD (asynchronous mode)
RXD (asynchronous mode)
After RE on CLK
-
UART Output Signals
t
COv1
TXD output valid (all signals with
propagation delay from CLK RE)
propagation delay from CLK RE)
After RE on CLK
-
t
TXD
TXD output valid
After RE on CLK
-
40
CLK
TXD
RXD
1
t
COv1
t
lS
t
lH
t
COv1
1
1
2
2
2
1
1
1
2
2
2
DS098