S912XEG128J2MAA Datasheet, PDF (670/1324 Pages) Freescale Semiconductor, Inc – Microcontrollers

Chapter 17 Periodic Interrupt Timer (S12PIT24B8CV2)
Module Base + 0x0016, 0x0017
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
R _{PCNT PCNT PCNT PCNT PCNT PCNT PCN PCN PCN PCN PCN PCN PCN PCN PCN PCN}
W ¹⁵
14
13
12
11
10 T9 T8 T7 T6 T5 T4 T3 T2 T1 T0
Reset 0
0
0
0
0
0
0000000000
Figure 17-22. PIT Count Register 3 (PITCNT3)
Module Base + 0x001A, 0x001B
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
R _{PCNT PCNT PCNT PCNT PCNT PCNT PCN PCN PCN PCN PCN PCN PCN PCN PCN PCN}
W ¹⁵
14
13
12
11
10 T9 T8 T7 T6 T5 T4 T3 T2 T1 T0
Reset 0
0
0
0
0
0
0000000000
Figure 17-23. PIT Count Register 4 (PITCNT4)
Module Base + 0x001E, 0x001F
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
R _{PCNT PCNT PCNT PCNT PCNT PCNT PCN PCN PCN PCN PCN PCN PCN PCN PCN PCN}
W ¹⁵
14
13
12
11
10 T9 T8 T7 T6 T5 T4 T3 T2 T1 T0
Reset 0
0
0
0
0
0
0000000000
Figure 17-24. PIT Count Register 5 (PITCNT5)
Module Base + 0x0022, 0x0023
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
R _{PCNT PCNT PCNT PCNT PCNT PCNT PCN PCN PCN PCN PCN PCN PCN PCN PCN PCN}
W ¹⁵
14
13
12
11
10 T9 T8 T7 T6 T5 T4 T3 T2 T1 T0
Reset 0
0
0
0
0
0
0000000000
Figure 17-25. PIT Count Register 6 (PITCNT6)
Module Base + 0x0026, 0x0027
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
R _{PCNT PCNT PCNT PCNT PCNT PCNT PCN PCN PCN PCN PCN PCN PCN PCN PCN PCN}
W ¹⁵
14
13
12
11
10 T9 T8 T7 T6 T5 T4 T3 T2 T1 T0
Reset 0
0
0
0
0
0
0000000000
Figure 17-26. PIT Count Register 7 (PITCNT7)
Read: Anytime
Write: Has no meaning or effect
Table 17-10. PITCNT0–7 Field Descriptions
Field
Description
15:0 PIT Count Bits 15-0 — These bits represent the current 16-bit modulus down-counter value. The read access
PCNT[15:0] for the count register must take place in one clock cycle as a 16-bit access.
MC9S12XE-Family Reference Manual Rev. 1.25
670
Freescale Semiconductor