mcf51ac256a Freescale Semiconductor, Inc, mcf51ac256a Datasheet - Page 176

• Manufacturer Part Number: mcf51ac256a
• Description: Mcf51ac Flexis
• Manufacturer: Freescale Semiconductor, Inc

Analog-to-Digital Converter (S08ADC12V1)
9.3.5
In 12-bit mode, the ADCCVH register holds the upper four bits of the 12-bit compare value. When the
compare function is enabled, these bits are compared to the upper four bits of the result following a
conversion in 12-bit mode.
In 10-bit mode, the ADCCVH register holds the upper two bits of the 10-bit compare value (ADCV[9:8]).
These bits are compared to the upper two bits of the result following a conversion in 10-bit mode when the
compare function is enabled.
In 8-bit mode, ADCCVH is not used during compare.
9.3.6
This register holds the lower eight bits of the 12-bit or 10-bit compare value or all eight bits of the 8-bit
compare value. When the compare function is enabled, bits ADCV[7:0] are compared to the lower eight
bits of the result following a conversion in 12-bit, 10-bit or 8-bit mode.
9.3.7
9-10
ADCCFG selects the mode of operation, clock source, clock divide, and configures for low power and
long sample time.
Reset:
Reset:
Reset:
W
W
W
R
R
R
Compare Value High Register (ADCCVH)
Compare Value Low Register (ADCCVL)
Configuration Register (ADCCFG)
ADCV7
ADLPC
7
0
0
7
0
7
0
MCF51AC256 ColdFire Integrated Microcontroller Reference Manual, Rev. 5
ADCV6
Figure 9-6. Compare Value High Register (ADCCVH)
Figure 9-7. Compare Value Low Register(ADCCVL)
0
0
0
0
6
6
6
Figure 9-8. Configuration Register (ADCCFG)
ADIV
ADCV5
0
0
0
0
5
5
5
ADLSMP
ADCV4
0
0
0
0
4
4
4
ADCV11
ADCV3
0
0
0
3
3
3
MODE
ADCV10
ADCV2
0
0
0
2
2
2
ADCV9
ADCV1
Freescale Semiconductor
0
0
0
1
1
1
ADICLK
ADCV8
ADCV0
0
0
0
0
0
0