DEMO9S08LIN Freescale, DEMO9S08LIN Datasheet - Page 298

• Manufacturer Part Number: DEMO9S08LIN
• Manufacturer: Freescale

Specifications of DEMO9S08LIN

• Lead Free Status / RoHS Status: Compliant

Chapter 16 Analog Comparator (S08ACMPV2)
16.3.1
ACMPSC contains the status flag and control bits which are used to enable and configure the ACMP.
298
ACMOD
ACBGS
ACOPE
ACME
Field
ACIE
ACO
ACF
1:0
7
6
5
4
3
2
Reset:
ACMP Status and Control Register (ACMPSC)
W
R
Analog Comparator Module Enable — ACME enables the ACMP module.
0 ACMP not enabled
1 ACMP is enabled
Analog Comparator Bandgap Select — ACBGS is used to select between the bandgap reference voltage or
the ACMP+ pin as the input to the non-inverting input of the analog comparatorr.
0 External pin ACMP+ selected as non-inverting input to comparator
1 Internal reference select as non-inverting input to comparator
Analog Comparator Flag — ACF is set when a compare event occurs. Compare events are defined by ACMOD.
ACF is cleared by writing a one to ACF.
0 Compare event has not occurred
1 Compare event has occurred
Analog Comparator Interrupt Enable — ACIE enables the interrupt from the ACMP. When ACIE is set, an
interrupt will be asserted when ACF is set.
0 Interrupt disabled
1 Interrupt enabled
Analog Comparator Output — Reading ACO will return the current value of the analog comparator output. ACO
is reset to a 0 and will read as a 0 when the ACMP is disabled (ACME = 0).
Analog Comparator Output Pin Enable — ACOPE is used to enable the comparator output to be placed onto
the external pin, ACMPO.
0 Analog comparator output not available on ACMPO
1 Analog comparator output is driven out on ACMPO
Analog Comparator Mode — ACMOD selects the type of compare event which sets ACF.
00 Encoding 0 — Comparator output falling edge
01 Encoding 1 — Comparator output rising edge
10 Encoding 2 — Comparator output falling edge
11 Encoding 3 — Comparator output rising or falling edge
ACME
0
7
Table 16-2. ACMP Status and Control Register Field Descriptions
= Unimplemented
ACBGS
MC9S08LC60 Series Data Sheet: Technical Data, Rev. 4
Figure 16-3. ACMP Status and Control Register
0
6
ACF
5
0
ACIE
0
4
Description
ACO
0
3
ACOPE
0
2
0
1
Freescale Semiconductor
ACMOD
0
0