AT89C51CC03U-RDTIM datasheet(117/195 Pages) ATMEL

tên linh kiện	AT89C51CC03U-RDTIM

Giải thích chi tiết về linh kiện	Enhanced 8-bit MCU with CAN Controller and Flash Memory

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AT89C51CC03

4182I–CAN–06/05

Table 62. CANBT3 Register

CANBT3 (S:B6h)

CAN Bit Timing Registers 3

Note:

The CAN controller bit timing registers must be accessed only if the CAN controller is dis-

abled with the ENA bit of the CANGCON register set to 0.

See Figure 52.

No default value after reset.

543

210

PHS2 2

PHS2 1

PHS2 0

PHS1 2

PHS1 1

PHS1 0

SMP

Bit

Number

Bit Mnemonic Description

Reserved

The value read from this bit is indeterminate. Do not set this bit.

6-4

PHS2 2:0

Phase Segment 2

This phase is used to compensate for phase edge errors. This segment can

be shortened by the re-synchronization jump width.

Phase segment 2 is the maximum of Phase segment 1 and the Information

Processing Time (= 2TQ).

3-1

PHS1 2:0

Phase Segment 1

This phase is used to compensate for phase edge errors. This segment can

be lengthened by the re-synchronization jump width.

0SMP

Sample Type

0 - once, at the sample point.

1 - three times, the threefold sampling of the bus is the sample point and twice

over a distance of a 1/2 period of the Tscl. The result corresponds to the

majority decision of the three values.

Tphs2 = Tscl x (PHS2[2..0] + 1)

Tphs1 = Tscl x (PHS1[2..0] + 1)

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