MEGA128CAN Datasheet, PDF (130/413 Pages) ATMEL Corporation – Microcontroller WITH 128K BYTES OF ISP FLASH AND CAN CONTROLLER

Figure 60. Timer/Counter Timing Diagram, with Prescaler (f_{clk_I/O}/8)
clk_I/O
clk_Tn
(clk_I/O/8)
TCNTn
(CTC and FPWM)
TCNTn
(PC and PFC PWM)
TOVn (FPWM)
and ICF n(if used
as TOP)
OCRnx
(Update at TOP)
TOP - 1
TOP - 1
TOP
TOP
Old OCRnx Value
BOTTOM
TOP - 1
BOTTOM + 1
TOP - 2
New OCRnx Value
130 AT90CAN128
4250E–CAN–12/04