mc9s12xs128 Freescale Semiconductor, Inc, mc9s12xs128 Datasheet - Page 500

• Manufacturer Part Number: mc9s12xs128
• Description: Hcs12 Microcontrollers 16-bit Automotive Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Voltage Regulator (S12VREGL3V3V1)
The period can be calculated as follows depending of APICLK:
500
Period = 2*(APIR[15:0] + 1) * 0.1 ms or period = 2*(APIR[15:0] + 1) * bus clock period
1
When trimmed within specified accuracy. See electrical specifications for details.
APICLK
Table 17-10. Selectable Autonomous Periodical Interrupt Periods
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
S12XS Family Reference Manual, Rev. 1.10
APIR[15:0]
FFFD
FFFD
FFFE
FFFF
FFFE
FFFF
0000
0001
0002
0003
0004
0005
0000
0001
0002
0003
0004
0005
.....
.....
131068 * bus clock period
131070 * bus clock period
131072 * bus clock period
10 * bus clock period
12 * bus clock period
2 * bus clock period
4 * bus clock period
6 * bus clock period
8 * bus clock period
Selected Period
13106.8 ms
13107.0 ms
13107.2 ms
0.2 ms
0.4 ms
0.6 ms
0.8 ms
1.0 ms
1.2 ms
.....
.....
1
1
1
1
1
1
1
1
1
Freescale Semiconductor