sc9s12hy64j0vllr Freescale Semiconductor, Inc, sc9s12hy64j0vllr Datasheet - Page 504

• Manufacturer Part Number: sc9s12hy64j0vllr
• Description: S12 Microcontrollers Mcu 16-bit Hcs12 Cisc 32kb Flash 5v Tray
• Manufacturer: Freescale Semiconductor, Inc

Timer Module (TIM16B8CV2) Block Description
For the description of PACLK please refer
If the pulse accumulator is disabled (PAEN = 0), the prescaler clock from the timer is always used as an
input clock to the timer counter. The change from one selected clock to the other happens immediately
after these bits are written.
14.3.2.16 Pulse Accumulator Flag Register (PAFLG)
Read: Anytime
Write: Anytime
When the TFFCA bit in the TSCR register is set, any access to the PACNT register will clear all the flags
in the PAFLG register. Timer module or Pulse Accumulator must stay enabled (TEN=1 or PAEN=1) while
clearing these bits.
504
Module Base + 0x0021
Reset
W
R
0
0
7
If the timer is not active (TEN = 0 in TSCR), there is no divide-by-64
because the 64 clock is generated by the timer prescaler.
PAMOD
CLK1
Unimplemented or Reserved
0
0
1
1
0
0
1
1
Figure 14-25. Pulse Accumulator Flag Register (PAFLG)
0
0
6
MC9S12HY/HA-Family Reference Manual, Rev. 1.04
PEDGE
CLK0
0
1
0
1
0
1
0
1
Table 14-20. Timer Clock Selection
0
0
5
Table 14-19. Pin Action
Use PACLK/65536 as timer counter clock frequency
Use PACLK/256 as timer counter clock frequency
Figure
Use timer prescaler clock as timer counter clock
Div. by 64 clock enabled with pin high level
Use PACLK as input to timer counter clock
Div. by 64 clock enabled with pin low level
NOTE
14-30.
0
0
4
Timer Clock
Falling edge
Rising edge
Pin Action
0
0
3
0
0
2
PAOVF
Freescale Semiconductor
0
1
PAIF
0
0