HD6417144 RENESAS [Renesas Technology Corp], HD6417144 Datasheet - Page 572

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

14. I
14.5
1. In master mode, when the instruction that generates the start condition is issued immediately
2. The following two conditions apply to the start of the next transfer: take note when reading
3. In synchronization with the internal clock, SCL and SDA are output with the timing shown in
Table 14.8 I
Note:
Rev.4.00 Mar. 27, 2008 Page 528 of 882
REJ09B0108-0400
Item
SCL-output cycle time
SCL-output high-pulse width
SCL-output low-pulse width
SDA-output bus-free time
Start-condition-output hold time
Output setup time for re-transmission of start
condition
Setup time for output of the stop condition
Setup time for the output of data (master)
Setup time for the output of data (slave)
Data-output hold time
after the instruction that generates the stop condition, neither the start condition nor the stop
condition will be correctly output. For the consecutive output of the start condition and stop
condition, read the port after issuing the instruction that generates the start condition, and make
sure that the levels on both SCL and SDA are low. Then issue the instruction that generates the
stop condition. Note that SCL may not have completely reached its low level when BBSY
becomes 1.
from/writing to ICDR.
⎯ ICE = 1, TRS = 1, and data is written to ICDR (including automatic transfer from ICDRT
⎯ ICE = 1, TRS = 0, and data is read from ICDR (including automatic transfer from ICDRS
table 14.8. The timing on the bus is determined by the rise/fall times of the signals, and these
are affected by the bus-load’s capacitance, series resistance, and parallel resistance.
2
C Bus Interface (IIC) Option
to ICDRS)
to ICDRR)
*
Usage Notes
When the IICX is 0, 6 t
2
C Bus Timing (output of SCL and SDA)
pcyc
. When IICX is 1, 12 t
Symbol
t
t
t
t
t
t
t
t
t
SCLO
SCLHO
SCLLO
BUFO
STAHO
STASO
STOSO
SDASO
SDAHO
pcyc
Output Timing
28 t
0.5 t
0.5 t
0.5 t
0.5 t
1 t
0.5 t
1 t
1 t
t
3 t
pcyc
.
SCLO
SCLLO
SCLL
pcyc
*)
pcyc
SCLO
SCLO
SCLO
SCLO
SCLO
−(6 t
to 256 t
−3 t
−1 t
−1 t
+2 t
pcyc
pcyc
pcyc
pcyc
pcyc
or 12
pcyc
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Remarks