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 18 Periodic Interrupt Timer (S12PIT24B4CV2)
Table 18-9. PITLD0–3 Field Descriptions
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
Field
15:0
PLD[15:0]
Description
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.
18.3.0.9
PIT Count Register 0 to 3 (PITCNT0–3)
Module Base + 0x000A, 0x000B
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 18-15. PIT Count Register 0 (PITCNT0)
Module Base + 0x000E, 0x000F
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 18-16. PIT Count Register 1 (PITCNT1)
Module Base + 0x0012, 0x0013
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 18-17. PIT Count Register 2 (PITCNT2)
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
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 18-18. PIT Count Register 3 (PITCNT3)
Read: Anytime
Write: Has no meaning or effect
MC9S12XE-Family Reference Manual , Rev. 1.19
686
Freescale Semiconductor
