mc9s12xs128 Freescale Semiconductor, Inc, mc9s12xs128 Datasheet - Page 358

• Manufacturer Part Number: mc9s12xs128
• Description: Hcs12 Microcontrollers 16-bit Automotive Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Periodic Interrupt Timer (S12PIT24B4CV1)
12.3.0.8
Read: Anytime
Write: Anytime
358
Module Base + 0x0008, 0x0009
Module Base + 0x000C, 0x000D
Module Base + 0x0010, 0x0011
Module Base + 0x0014, 0x0015
Reset
Reset
Reset
Reset
PLD[15:0]
Field
W
W
W
W
15:0
R
R
R
R
PLD15 PLD14 PLD13 PLD12 PLD11 PLD10 PLD9 PLD8 PLD7 PLD6 PLD5 PLD4 PLD3 PLD2 PLD1 PLD0
PLD15 PLD14 PLD13 PLD12 PLD11 PLD10 PLD9 PLD8 PLD7 PLD6 PLD5 PLD4 PLD3 PLD2 PLD1 PLD0
PLD15 PLD14 PLD13 PLD12 PLD11 PLD10 PLD9 PLD8 PLD7 PLD6 PLD5 PLD4 PLD3 PLD2 PLD1 PLD0
PLD15 PLD14 PLD13 PLD12 PLD11 PLD10 PLD9 PLD8 PLD7 PLD6 PLD5 PLD4 PLD3 PLD2 PLD1 PLD0
15
15
15
15
0
0
0
0
PIT Load Bits 15:0 — These bits set the 16-bit modulus down-counter load value. Writing a new value into the
PITLD register must be a 16-bit access, to ensure data consistency. It will not restart the timer. When the timer
has counted down to zero the PTF time-out flag will be set and the register value will be loaded. The PFLT bits
in the PITFLT register can be used to immediately update the count register with the new value if an immediate
load is desired.
PIT Load Register 0 to 3 (PITLD0–3)
14
14
14
14
0
0
0
0
13
13
13
13
0
0
0
0
12
12
12
12
0
0
0
0
Figure 12-11. PIT Load Register 0 (PITLD0)
Figure 12-12. PIT Load Register 1 (PITLD1)
Figure 12-13. PIT Load Register 2 (PITLD2)
Figure 12-14. PIT Load Register 3 (PITLD3)
Table 12-9. PITLD0–3 Field Descriptions
S12XS Family Reference Manual, Rev. 1.10
11
11
11
11
0
0
0
0
10
10
10
10
0
0
0
0
0
0
0
0
9
9
9
9
Description
0
0
0
0
8
8
8
8
0
0
0
0
7
7
7
7
0
0
0
0
6
6
6
6
0
0
0
0
5
5
5
5
0
0
0
0
4
4
4
4
Freescale Semiconductor
3
0
3
0
3
0
3
0
0
0
0
0
2
2
2
2
0
0
0
0
1
1
1
1
0
0
0
0
0
0
0
0