PXS30 Datasheet, PDF (81/139 Pages) Freescale Semiconductor, Inc – PXS30 Microcontroller

Electrical characteristics
3.13 16 MHz RC oscillator electrical characteristics
Table 23. RC oscillator electrical characteristics
No. Symbol
Parameter
Conditions
Min Typ Max Unit
1
f_RC CC RC oscillator frequency
27 °C, 1.2 V trimmed
2 _RCMVAR CC Frequency spread: The variation in
—
output frequency from PTF¹ across
temperature and supply voltage range
— 16 — MHz
— — ±5 %
3 _IRCTRIM CC Internal RC oscillator trimming step
T_A = 25 °C
— 1.6 — %
NOTES:
1 _{PTF = Post Trimming Frequency: The frequency of the output clock after trimming at typical supply voltage and}
temperature.
3.14 ADC electrical characteristics
The PXS30 provides a 12-bit Successive Approximation Register (SAR) Analog-to-Digital Converter.
Offset Error OSE Gain Error GE
4095
4094
4093
4092
4091
4090
code out7
6
( 2)
1 LSB ideal =(VrefH-VrefL)/ 4096 =
3.3 V/ 4096 = 0.806 mV
Total Unadjusted Error
TUE = ±6 LSB = ±4.84 mV
( 1)
5
(1) Example of an actual transfer curve
(5)
(2) The ideal transfer curve
4
(3) Differential non-linearity error (DNL)
3
(4)
(4) Integral non-linearity error (INL)
(5) Center of a step of the actual transfer
2
(3)
curve
1
1 LSB (ideal)
0
1 23 45 67
Offset Error OSE
4089 40904091 40924093 40944095
V_in(A) (LSB_ideal)
Figure 8. ADC characteristics and error definitions
PXS30 Microcontroller Data Sheet, Rev. 1
Freescale Semiconductor
Preliminary—Subject to Change Without Notice
81