MC9S12XF512 Datasheet, PDF (125/1300 Pages) Freescale Semiconductor, Inc – S12X Microcontrollers

Chapter 3 Voltage Regulator (S12VREGL3V3V1)
3.3.2.6 Reserved 06
The Reserved 06 is reserved for test purposes.
0x02F6
7
6
5
4
3
2
1
0
R
0
0
0
0
0
0
0
0
W
Reset
0
0
0
0
0
0
0
0
= Unimplemented or Reserved
Figure 3-7. Reserved 06
3.3.2.7 HTTrimming Register (VREGHTTR)
The VREGHTTR register allows to trim the VREGL3V3 temperature sense.
Fiption
0x02F7
7
6
5
4
3
2
R
0
0
0
HTOEN
HTTR3
HTTR2
W
Reset
0
0
0
0
0¹
0¹
1. Reset value is either 0 or preset by factory. See Section 1 (Device Overview) for details.
= Unimplemented or Reserved
Figure 3-8. VREGHTTR
1
HTTR1
0¹
0
HTTR0
0¹
Table 3-11. VREGHTTR field descriptions
Field
Description
7
HTOEN
3–0
HTTR[3:0]
High Temperature Offeset Enable Bit — 01
High Temperature Trimming Bits — See Table 3-12 for trimming effects.
Bit
HTTR[3]
HTTR[2]
HTTR[1]
HTTR[0]
Table 3-12. Trimming Effect
Trimming Effect
Increases V_HT twice of HTTR[2]
Increases V_HT twice of HTTR[1]
Increases V_HT twice of HTTR[0]
Increases V_HT (to compensate Temperature Offset)
MC9S12XF - Family Reference Manual, Rev.1.18
Freescale Semiconductor
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