MC9S12HY64 Datasheet, PDF (258/792 Pages) Freescale Semiconductor, Inc – S12 Microcontrollers

S12 Clock, Reset and Power Management Unit (S12CPMU) Block Description
7.3.2.19 High Temperature Trimming Register (CPMUHTTR)
The CPMUHTTR register configures the trimming of the S12CPMU temperature sense.
0x02F7
7
6
5
4
3
2
1
0
R
0
0
0
HTOE
HTTR3
HTTR2
HTTR1
HTTR0
W
Reset
0
0
0
0
F
F
F
F
After de-assert of System Reset a trim value is automatically loaded from the Flash memory. See Device specification for
details.
= Unimplemented or Reserved
Read: Anytime
Write: Anytime
Field
Description
7
HTOE
3–0
HTTR[3:0]
High Temperature Offset Enable Bit — If set the temperature sense offset is enabled.
0 The temperature sense offset is disabled. HTTR[3:0] bits don’t care.
1 The temperature sense offset is enabled. HTTR[3:0] select the temperature offset.
High Temperature Trimming Bits — See Table 1-27 for trimming effects.
Bit
HTTR[3]
HTTR[2]
HTTR[1]
HTTR[0]
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)
MC9S12HY/HA-Family Reference Manual, Rev. 1.04
258
Freescale Semiconductor