MC9S08SH8CSC View Datasheet(PDF) - Freescale Semiconductor

Part Name

Description

Manufacturer

MC9S08SH8CSC

HCS08 Microcontrollers

Freescale Semiconductor 

Chapter 9 Analog-to-Digital Converter (S08ADC10V1)

converter yields the lower code (and vice-versa). However, even very small amounts of system noise can

cause the converter to be indeterminate (between two codes) for a range of input voltages around the

transition voltage. This range is normally around 1/2LSB and will increase with noise. This error may be

reduced by repeatedly sampling the input and averaging the result. Additionally the techniques discussed

in Section 9.6.2.3 will reduce this error.

Non-monotonicity is defined as when, except for code jitter, the converter converts to a lower code for a

higher input voltage. Missing codes are those values which are never converted for any input value.

In 8-bit or 10-bit mode, the ADC is guaranteed to be monotonic and to have no missing codes.

MC9S08SH8 MCU Series Data Sheet, Rev. 3

Freescale Semiconductor

147

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