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| MC908GR32AVFAE Datasheet, PDF (222/314 Pages) Freescale Semiconductor, Inc – Microcontrollers | |||
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Timebase Module (TBM)
TMBCLKSEL
FROM CONFIG2
CGMXCLK
FROM CGM MODULE
DIVIDE BY 128
PRESCALER
÷2 ÷2 ÷2
÷2
÷2
÷2
÷2
0
TBMCLK
1
TBON
TBMINT
÷2 ÷2 ÷2 ÷2
÷2 ÷2
÷2 ÷2
000
001
010
011
100
101
110
111
Figure 16-1. Timebase Block Diagram
TBIF
TBIE
R
16.5 TBM Interrupt Rate
The interrupt rate is determined by the equation:
tTBMRATE =
Divider
fCGMXCLK
where:
fCGMXCLK = Frequency supplied from the clock generator (CGM) module
Divider = Divider value as determined by TBR2âTBR0 settings and TMBCLKSEL, see Table 16-1
MC68HC908GR60A ⢠MC68HC908GR48A ⢠MC68HC908GR32A Data Sheet, Rev. 5
222
Freescale Semiconductor
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