參數(shù)資料
型號: MC68HC05X4CDW
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 2.2 MHz, MICROCONTROLLER, PDSO28
封裝: PLASTIC, SOIC-28
文件頁數(shù): 148/156頁
文件大小: 3699K
代理商: MC68HC05X4CDW
Motorola CAN
Interface to the MC68HC05X4 CPU
MC68HC05X4 Rev 1.0
Motorola CAN
23-mcan
Calculation of the bit time
NOTE:
TSEG2 must be at least 2 tSCL, i.e. the configuration bits must not be
000. (If three samples per bit mode is selected then TSEG2 must be at
least 3 tSCL.)
TSEG1 must be at least as long as TSEG2.
The synchronization jump width (SJW) may not exceed TSEG2, and
must be at least tSCL shorter than TSEG1 to allow for physical
propagation delays.
i.e. in terms of tSCL:
SYNC_SEG = 1
TSEG1
≥ SJW + 1
TSEG1
≥ TSEG2
TSEG2
≥ SJW
and
TSEG2
≥ 2
(SAMP = 0)
or
TSEG2
≥ 3
(SAMP = 1)
These boundary conditions result in minimum bit times of 5 tSCL, for one
sample, and 7 t
SCL, for three samples per bit.
BIT_TIME
SYNC_SEG
TSEG1
TSEG2
++
=
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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