Device Overview MC9S12G-Family
MC9S12G Family Reference Manual Rev.1.27
NXP Semiconductors 37
1.3.15 Reference Voltage Attenuator (RVA)
• Attenuation of ADC reference voltage with low long-term drift
1.3.16 Digital-to-Analog Converter Module (DAC)
• 1 digital-analog converter channel (per module) with:
— 8 bit resolution
— full and reduced output voltage range
— buffered or unbuffered analog output voltage usable
• operational amplifier stand alone usable
1.3.17 Analog Comparator (ACMP)
• Low offset, low long-term offset drift
• Selectable interrupt on rising, falling, or rising and falling edges of comparator output
• Option to output comparator signal on an external pin
• Option to trigger timer input capture events
1.3.18 On-Chip Voltage Regulator (VREG)
• Linear voltage regulator with bandgap reference
• Low-voltage detect (LVD) with low-voltage interrupt (LVI)
• Power-on reset (POR) circuit
• Low-voltage reset (LVR)
1.3.19 Background Debug (BDM)
• Non-intrusive memory access commands
• Supports in-circuit programming of on-chip nonvolatile memory
1.3.20 Debugger (DBG)
• Trace buffer with depth of 64 entries
• Three comparators (A, B and C)
— Access address comparisons with optional data comparisons
— Program counter comparisons
— Exact address or address range comparisons
• Two types of comparator matches
— Tagged This matches just before a specific instruction begins execution
— Force This is valid on the first instruction boundary after a match occurs
• Four trace modes
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