MC9S12G FREESCALE [Freescale Semiconductor, Inc], MC9S12G Datasheet - Page 221

• Manufacturer Part Number: MC9S12G
• Description: Ignores external trigger. Performs one conversion sequence and stops.
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

4.4
The RVA has two external input signals, VRH and VSSA.
4.5
Freescale Semiconductor
1. Attenuation Mode
2. Bypass Mode
This document is valid for the S12G96 and the S12G128 device. All information related to other devices is preliminary.
The RVA is attenuating the reference voltage when enabled by the register control bit and the MCU
not being in STOP mode.
The RVA is in bypass mode either when disabled or during STOP mode. In these cases the resistor
ladder of the RVA is disconnected for power saving.
External Signals
Modes of Operation
VSSA
VRH
RVA
5R
4R
R
MC9S12G Family Reference Manual, Rev.1.01
Figure 4-1. RVA Module Block Diagram
STOP
RVAON
Reference Voltage Attenuator (RVAV1)
VRH_INT
VRL_INT
to ADC
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