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MB90420/5 (A) SERIES F
The relationship between PSC = PSC5 to PSC0, TSI = TS1.3 to TS1.0, TS2 = TS2.2 to TS1.0, and RSJ =
RSJ1 and RSJ0 when the input clock (CLK), time quanta (TQ), bit time (BT), synchronous segment
(SYNC_SEG), time segment 1 and 2 (TSEG1 and TSEG2), and resynchronization jump width [(RSJ1 and
RSJ0) +1] frequency division is shown below.
= (PSC + 1) × CLK
TQ
BT
= SYNC_SEG + TSEG1 + TSEG2
(1 + (TS1 + 1) + (TS2 + 1)) × TQ
= (3 + TS1 + TS2) TQ
RSJW = (RSJ + 1) × TQ
For correct operation, the following conditions should be met.
BT
>= 8TQ
TSEG2 >= RSJW + 2TQ*1
TSEG1 >= delay time*2 + RSJW
*1) 2TQ: Data processing time
*2) Delay time: Twice as long as the sum of the bus propagation, input comparator and output driver delay
2
MC-16LX FAMILY 16-BIT MICROCONTROLLERS HARDWARE MANUAL
23-18
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