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)
18.3.0.6
PIT Time-Out Flag Register (PITTF)
7
6
5
4
3
2
1
0
Module Base + 0x0005
R
W
Reset
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
PTF3
0
PTF2
0
PTF1
0
PTF0
0
Figure 18-8. PIT Time-Out Flag Register (PITTF)
Read: Anytime
Write: Anytime (write to clear)
Table 18-7. PITTF Field Descriptions
Field
3:0
PTF[3:0]
Description
PIT Time-out Flag Bits for Timer Channel 3:0
— PTF is set when the corresponding 16-bit timer modulus
down-counter and the selected 8-bit micro timer modulus down-counter have counted to zero. The flag can be
cleared by writing a one to the flag bit. Writing a zero has no effect. If flag clearing by writing a one and flag setting
happen in the same bus clock cycle, the flag remains set. The flag bits are cleared if the PIT module is disabled
or if the corresponding timer channel is disabled.
0 Time-out of the corresponding PIT channel has not yet occurred.
1 Time-out of the corresponding PIT channel has occurred.
18.3.0.7
PIT Micro Timer Load Register 0 to 1 (PITMTLD0–1)
7
6
5
4
3
2
1
0
Module Base + 0x0006
R
W
Reset
PMTLD7
0
PMTLD6
0
PMTLD5
0
PMTLD4
0
PMTLD3
0
PMTLD2
0
PMTLD1
0
PMTLD0
0
Figure 18-9. PIT Micro Timer Load Register 0 (PITMTLD0)
Module Base + 0x0007
7
6
5
4
3
2
1
0
R
W
Reset
PMTLD7
0
PMTLD6
0
PMTLD5
0
PMTLD4
0
PMTLD3
0
PMTLD2
0
PMTLD1
0
PMTLD0
0
Figure 18-10. PIT Micro Timer Load Register 1 (PITMTLD1)
Read: Anytime
Write: Anytime
MC9S12XE-Family Reference Manual , Rev. 1.19
684
Freescale Semiconductor
