s908ey8ad4cfjer Freescale Semiconductor, Inc, s908ey8ad4cfjer Datasheet - Page 190

• Manufacturer Part Number: s908ey8ad4cfjer
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Timebase Module (TBM)
16.4 Interrupts
The timebase module can periodically interrupt the CPU with a rate defined by the selected TBMCLK and
the select bits TBR2–TBR0. When the timebase counter chain rolls over, the TBIF flag is set. If the TBIE
bit is set, enabling the timebase interrupt, the counter chain overflow will generate a CPU interrupt
request.
Interrupts must be acknowledged by writing a 1 to the TACK bit.
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FROM ICG MODULE
FROM CONFIG2
TMBCLKSEL
TBMCLK
÷ 2
÷ 2
÷ 2
÷ 2
÷ 2
÷ 2
MC68HC908EY16 • MC68HC908EY8 Data Sheet, Rev. 10
÷ 2
Figure 16-1. Timebase Block Diagram
÷ 2
÷ 2
PRESCALER
DIVIDE
BY 128
÷ 2
÷ 2
÷ 2
÷ 2
÷ 2
÷ 2
0 0 0
0 0 1
0 1 0
0 1 1
1 0 0
1 0 1
1 1 0
1 1 1
1
0
TBON
R
Freescale Semiconductor
TBIF
TBMINT
TBIE