h8s-2646 Renesas Electronics Corporation., h8s-2646 Datasheet - Page 602

• Manufacturer Part Number: h8s-2646
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

Section 15 Controller Area Network (HCAN)
HCAN bit rate calculation:
BCR Setting Constraints
These constraints allow the setting range shown in table 15.4 for TSEG1 and TSEG2 in BCR.
Table 15.4 Setting Range for TSEG1 and TSEG2 in BCR
Notes: The time quanta value for TSEG1 and TSEG2 is the TSEG value + 1.
Rev. 5.00 Sep 22, 2005 page 576 of 1136
REJ09B0257-0500
(BCR [11:8])
TSEG1
* Only a value other than BRP[13:8] = B'000000 can be set.
Bit rate =
Note: f
TSEG1 > TSEG2 ≥ SJW
The BCR values are used for BRP, TSEG1, and TSEG2.
CLK
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
= φ (system clock)
2 × (BRP + 1) × (3 + TSEG1 + TSEG2)
Yes *
Yes *
Yes *
Yes *
Yes *
Yes *
Yes *
Yes *
Yes *
Yes *
Yes *
Yes *
001
No
(SJW = 0 to 3)
010
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
f
CLK
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
TSEG2 (BCR [14:12])
011
No
100
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
101
No
No
No
110
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
111
No
No
No
No
No