SC9S12XS256J1MAA FREESCALE [Freescale Semiconductor, Inc], SC9S12XS256J1MAA Datasheet - Page 356
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SC9S12XS256J1MAA
Manufacturer Part Number
SC9S12XS256J1MAA
Description
HCS12 Microcontrollers
Manufacturer
FREESCALE [Freescale Semiconductor, Inc]
Datasheet
1.SC9S12XS256J1MAA.pdf
(736 pages)
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Periodic Interrupt Timer (S12PIT24B4CV1)
12.3.0.8
Read: Anytime
Write: Anytime
356
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. 1.09
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
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