h8s-2138 Renesas Electronics Corporation., h8s-2138 Datasheet - Page 521

• Manufacturer Part Number: h8s-2138
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Note:
Bits 2 to 0—Bit Counter (BC2 to BC0): Bits BC2 to BC0 specify the number of bits to be
transferred next. With the I
the data is transferred with one addition acknowledge bit. Bit BC2 to BC0 settings should be made
during an interval between transfer frames. If bits BC2 to BC0 are set to a value other than 000,
the setting should be made while the SCL line is low.
The bit counter is initialized to 000 by a reset and when a start condition is detected. The value
returns to 000 at the end of a data transfer, including the acknowledge bit.
STCR
Bit 5 or 6 Bit 5 Bit 4 Bit 3
IICX
0
1
* Outside the I
CKS2 CKS1 CKS0 Clock
0
1
0
1
speed mode: max. 400 kHz).
0
1
0
1
0
1
0
1
2
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
C bus interface specification range (normal mode: max. 100 kHz; high-
2
C bus format (when the FS bit in SAR or the FSX bit in SARX is 0),
/28
/40
/48
/64
/80
/100
/112
/128
/56
/80
/96
/128
/160
/200
/224
/256
5 MHz
179 kHz
125 kHz
104 kHz
78.1 kHz
62.5 kHz
50.0 kHz
44.6 kHz
39.1 kHz
89.3 kHz
62.5 kHz
52.1 kHz
39.1 kHz
31.3 kHz
25.0 kHz
22.3 kHz
19.5 kHz
=
Section 16 I
8 MHz
286 kHz
200 kHz
167 kHz
125 kHz
100 kHz
80.0 kHz
71.4 kHz
62.5 kHz
143 kHz
100 kHz
83.3 kHz
62.5 kHz
50.0 kHz
40.0 kHz
35.7 kHz
31.3 kHz
=
Rev. 4.00 Jun 06, 2006 page 467 of 1004
2
C Bus Interface [H8S/2138 Group Option]
Transfer Rate
10 MHz
357 kHz
250 kHz
208 kHz
156 kHz
125 kHz
100 kHz
89.3 kHz
78.1 kHz
179 kHz
125 kHz
104 kHz
78.1 kHz
62.5 kHz
50.0 kHz
44.6 kHz
39.1 kHz
=
16 MHz
571 kHz *
400 kHz
333 kHz
250 kHz
200 kHz
160 kHz
143 kHz
125 kHz
286 kHz
200 kHz
167 kHz
125 kHz
100 kHz
80.0 kHz
71.4 kHz
62.5 kHz
=
REJ09B0301-0400
20 MHz
714 kHz *
500 kHz *
417 kHz *
313 kHz
250 kHz
200 kHz
179 kHz
156 kHz
357 kHz
250 kHz
208 kHz
156 kHz
125 kHz
100 kHz
89.3 kHz
78.1 kHz
=