S912XEG128J2MAA Datasheet, PDF (824/1324 Pages) Freescale Semiconductor, Inc – Microcontrollers

Chapter 23 Voltage Regulator (S12VREGL3V3V1)
0x02F4
R
W
Reset
7
APIR15
6
APIR14
5
APIR13
4
APIR12
3
APIR11
2
APIR10
1
APIR9
0
0
0
0
0
0
0
= Unimplemented or Reserved
Figure 23-6. Autonomous Periodical Interrupt Rate High Register (VREGAPIRH)
0
APIR8
0
0x02F5
R
W
Reset
7
APIR7
6
APIR6
5
APIR5
4
APIR4
3
APIR3
2
APIR2
1
APIR1
0
0
0
0
0
0
0
Figure 23-7. Autonomous Periodical Interrupt Rate Low Register (VREGAPIRL)
Table 23-8. VREGAPIRH / VREGAPIRL Field Descriptions
0
APIR0
0
Field
Description
15-0
Autonomous Periodical Interrupt Rate Bits — These bits define the timeout period of the API. See Table 23-
APIR[15:0] 9 for details of the effect of the autonomous periodical interrupt rate bits. Writable only if APIFE = 0 of
VREGAPICL register.
Table 23-9. Selectable Autonomous Periodical Interrupt Periods
APICLK
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
APIR[15:0]
0000
0001
0002
0003
0004
0005
.....
FFFD
FFFE
FFFF
0000
0001
0002
0003
0004
0005
.....
FFFD
FFFE
Selected Period
0.2 ms⁽¹⁾
0.4 ms¹
0.6 ms¹
0.8 ms¹
1.0 ms¹
1.2 ms¹
.....
13106.8 ms¹
13107.0 ms¹
13107.2 ms¹
2 * bus clock period
4 * bus clock period
6 * bus clock period
8 * bus clock period
10 * bus clock period
12 * bus clock period
.....
131068 * bus clock period
131070 * bus clock period
MC9S12XE-Family Reference Manual Rev. 1.25
824
Freescale Semiconductor