S9S08QD4CSC View Datasheet(PDF) - Freescale Semiconductor

Part Name

Description

Manufacturer

S9S08QD4CSC

8-BIT HCS08 Microcontrollers

Freescale Semiconductor 

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 ±1/2 LSB 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 8.6.2.3, “Noise-Induced Errors,” 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.

MC9S08QD4 Series MCU Data Sheet, Rev. 6

Freescale Semiconductor

119

Share Link: