MC9S12E256 Datasheet, PDF (426/602 Pages) Freescale Semiconductor, Inc – HCS12 Microcontrollers

Chapter 13 Timer Module (TIM16B4CV1)
13.3.2.13 Main Timer Interrupt Flag 2 (TFLG2)
7
6
5
4
3
2
1
0
R
0
0
0
0
0
0
0
TOF
W
Reset
0
0
0
0
0
0
0
0
Unimplemented or Reserved
Figure 13-19. Main Timer Interrupt Flag 2 (TFLG2)
TFLG2 indicates when interrupt conditions have occurred. To clear a bit in the flag register, write the bit
to one.
Read: Anytime
Write: Used in clearing mechanism (set bits cause corresponding bits to be cleared).
Any access to TCNT will clear TFLG2 register if the TFFCA bit in TSCR register is set.
Table 13-16. TFLG2 Field Descriptions
Field
7
TOF
Description
Timer Overflow Flag — Set when 16-bit free-running timer overflows from 0xFFFF to 0x0000. This bit is cleared
automatically by a write to the TFLG2 register with bit 7 set. (See also TCRE control bit explanation.)
MC9S12E256 Data Sheet, Rev. 1.08
426
Freescale Semiconductor