參數(shù)資料
型號: MC68HC05X4
廠商: Motorola, Inc.
英文描述: HCMOS Microcontroller Unit
中文描述: HCMOS微控制器
文件頁數(shù): 91/156頁
文件大?。?/td> 926K
代理商: MC68HC05X4
Motorola CAN
Interface to the MC68HC05X4 CPU
MC68HC05X4 Rev 1.0
MOTOROLA
Motorola CAN
91
23-mcan
Calculation of the bit time
NOTE:
TSEG2 must be at least 2 t
SCL
, i.e. the configuration bits must not be
000. (If three samples per bit mode is selected then TSEG2 must be at
least 3 t
SCL
.)
TSEG1 must be at least as long as TSEG2.
The synchronization jump width (SJW) may not exceed TSEG2, and
must be at least t
SCL
shorter than TSEG1 to allow for physical
propagation delays.
i.e. in terms of t
SCL
:
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 t
SCL
, for one
sample, and 7 t
SCL
, for three samples per bit.
BIT_TIME
SYNC_SEG
TSEG1
TSEG2
+
+
=
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
.
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