S912XEG128J2VAL
| Model | S912XEG128J2VAL |
| Description | IC,MICROCONTROLLER,16-BIT,CPU12 CPU,CMOS,QFP,112PIN,PLASTIC |
| PDF file | Total 1327 pages (File size: 7M) |
| Chip Manufacturer | ROCHESTER |
Chapter 17 Periodic Interrupt Timer (S12PIT24B8CV2)
Module Base + 0x0016, 0x0017
R PCNT PCNT PCNT PCNT PCNT PCNT PCN PCN PCN PCN PCN PCN PCN PCN PCN PCN
15
14
13
12
11
10
T9
T8
T7
T6
T5
T4
T3
T2
T1
T0
W
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Because of an order from the United States International Trade Commission, BGA-packaged product lines and part numbers indicated here currently are not
available from Freescale for import or sale in the United States prior to September 2010: S12XE products in 208 MAPBGA packages
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
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
15
14
13
12
11
10
T9
T8
T7
T6
T5
T4
T3
T2
T1
T0
W
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
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
15
14
13
12
11
10
T9
T8
T7
T6
T5
T4
T3
T2
T1
T0
W
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
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
15
14
13
12
11
10
T9
T8
T7
T6
T5
T4
T3
T2
T1
T0
W
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
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
15
14
13
12
11
10
T9
T8
T7
T6
T5
T4
T3
T2
T1
T0
W
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
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. 1.19
670
Freescale Semiconductor
