mc9s12c32mpb16 Freescale Semiconductor, Inc, mc9s12c32mpb16 Datasheet - Page 520

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mc9s12c32mpb16

Manufacturer Part Number
mc9s12c32mpb16
Description
Hcs12 Microcontrollers
Manufacturer
Freescale Semiconductor, Inc
Datasheet
Chapter 18 32 Kbyte Flash Module (S12FTS32KV1)
520
TRY TO DECREASE Tbus
Figure 18-21. PRDIV8 and FDIV Bits Determination Procedure
FDIV[5:0]=PRDCLK[MHz]*(5+Tbus[ms])-1
yes
ALL COMMANDS IMPOSSIBLE
FCLK=(PRDCLK)/(1+FDIV[5:0])
PRDCLK[MHz]*(5+Tbus[ms])
1/FCLK[MHz] + Tbus[ms] > 5
PRDCLK=oscillator_clock/8
MC9S12C-Family / MC9S12GC-Family
PRDIV8=0 (reset)
FCLK > 0.15MHz
oscillator_clock
FDIV[5:0] > 4?
Tbus < 1ms?
an integer?
PRDIV8=1
START
12.8MHz?
AND
?
yes
yes
yes
no
no
Rev 01.23
no
no
PRDCLK=oscillator_clock
no
yes
FDIV[5:0]=INT(PRDCLK[MHz]*(5+Tbus[ms]))
ALL COMMANDS IMPOSSIBLE
END
Freescale Semiconductor

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