S9S12G48F1CLC Datasheet, PDF (576/1292 Pages) Freescale Semiconductor, Inc – Microcontrollers

Digital Analog Converter (DAC_8B5V)
17.4.2.2 Analog Output Voltage Level Register (DACVOL)
Module Base + 0x0002
Access: User read/write¹
7
6
5
4
3
2
1
0
R
VOLTAGE[7:0]
W
Reset
0
0
0
0
0
0
0
0
1 _{Read: Anytime}
Write: Anytime
Figure 17-4. Analog Output Voltage Level Register (DACVOL)
Table 17-4. DACVOL Field Description
Field
Description
7:0
VOLTAGE — This register defines (together with the FVR bit) the analog output voltage. For more detail see
VOLTAGE[7:0] Equation 17-1 and Equation 17-2.
17.4.2.3 Reserved Register
Module Base + 0x0007
Access: User read/write¹
7
R
Reserved
W
6
Reserved
5
Reserved
4
Reserved
3
Reserved
2
Reserved
Reset
x
x
x
x
x
x
Figure 17-5. Reserved Registerfv_dac_8b5v_RESERVED
1 _{Read: Anytime}
Write: Only in special mode
1
Reserved
x
0
Reserved
x
17.5 Functional Description
17.5.1 Functional Overview
The DAC resistor network and the operational amplifier can be used together or stand alone. Following
modes are supported:
Table 17-5. DAC Modes of Operation
DACM[2:0]
Off
000
Description
Submodules
DAC resistor
network
Operational
Amplifier
disabled
disabled
DACU
Output
AMP
disconnected
disconnected
MC9S12G Family Reference Manual, Rev.1.23
578
Freescale Semiconductor