s908ey16g2vfar Freescale Semiconductor, Inc, s908ey16g2vfar Datasheet - Page 107

• Manufacturer Part Number: s908ey16g2vfar
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

8.7.4 ICG 5-Volt Trim Value
This register provides non-volatile storage for an optional 5V oscillator trim value, which can be
transferred by the user software to the ICG Trim Register (ICGTR) when the device comes out of reset.
(See
8.7.5 ICG 3-Volt Trim Value
This register provides non-volatile storage for an optional 3V oscillator trim value, which can be
transferred by the user software to the ICG Trim Register (ICGTR) when the device comes out of reset.
(See
8.7.6 ICG DCO Divider Register
Freescale Semiconductor
unadjusted value. Decrementing this register by one increases the frequency by 0.195 percent. This
register cannot be written when the CMON bit is set. Reset sets these bits to $80, centering the range
of possible adjustment.
8.7.3 ICG Trim
8.7.3 ICG Trim
Address: $FF80
Address: $FF81
Address: $0039
Reset:
Reset:
Reset:
Optional storage for 5V and 3V trim values is provided in non-volatile
memory at addresses $FF80 and $FF81. See
and
Read:
Read:
Read:
Write:
Write:
Write:
8.7.5 ICG 3-Volt Trim
Register.)
Register.)
Figure 8-14. ICG DCO Divider Control Register (ICGDVR)
TRIM7
TRIM7
Bit 7
Figure 8-12. 5V Internal Oscillator Trim Value (ICGT5V)
Bit 7
Figure 8-13. 3V Internal Oscillator Trim Value (ICGT3V)
Bit 7
1
1
0
MC68HC908EY16A • MC68HC908EY8A Data Sheet, Rev. 1
= Unimplemented
TRIM6
TRIM6
6
0
6
0
6
0
TRIM5
TRIM5
Value.
5
0
5
0
5
0
NOTE
TRIM4
TRIM4
4
0
4
0
4
0
U = Unaffected
TRIM3
TRIM3
DDIV3
U
3
0
3
0
3
8.7.4 ICG 5-Volt Trim Value
TRIM2
TRIM2
DDIV2
U
2
0
2
0
2
TRIM1
TRIM1
DDIV1
Input/Output (I/O) Registers
U
1
0
1
0
1
TRIM0
TRIM0
DDIV0
Bit 0
Bit 0
Bit 0
U
0
0
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