HD6417144 RENESAS [Renesas Technology Corp], HD6417144 Datasheet - Page 831

• Manufacturer Part Number: HD6417144
• Description: 32-Bit RISC Microcomputer SuperHTM RISC engine Family/SH7144 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

[Operating Precautions]
The inputs and outputs are asynchronous in asynchronous mode, but as shown in figure 26.20, the
received data is considered to have been changed at CK clock rise (two-clock intervals). The
transmit signals change with a reference of CK clock rise (two-clock intervals).
SCI input/output timing (clock synchronous mode)
SCK0 to SCK3
(input/output)
TxD0 to TxD3
(transmit data)
RxD0 to RxD3
(received data)
SCI input/output timing (asynchronous mode)
CK
TxD0 to TxD3
(transmit data)
RxD0 to RxD3
(received data)
SCK0 to SCK3
V
OH
Figure 26.20 SCI Input/Output Timing
t
TxD
Figure 26.19 SCI Input Timing
T
1
V
IH
t
TxD
t
sckw
V
t
scyc
IH
V
IL
V
t
RxS
t
OH
RxS
Rev.4.00 Mar. 27, 2008 Page 787 of 882
V
IL
t
RxH
t
t
RxH
sckr
t
scyc
V
IH
26. Electrical Characteristics
T
V
n
IH
t
sckf
V
IL
REJ09B0108-0400