Datasheet

Electrical Specifications
MC68HC908QB8 Data Sheet, Rev. 3
220 Freescale Semiconductor
Integral non-linearity
10-bit mode
INL
0 ±0.5 —
LSB
8-bit mode 0 ±0.3 —
Zero-scale error
10-bit mode
E
ZS
0 ±0.5 —
LSB V
ADIN
= V
SS
8-bit mode 0 ±0.3 —
Full-scale error
10-bit mode
E
FS
0 ±0.5 —
LSB V
ADIN
= V
DD
8-bit mode 0 ±0.3 —
Quantization error
10-bit mode
E
Q
——±0.5
LSB
8-bit mode is
not truncated
8-bit mode — — ±0.5
Input leakage error
10-bit mode
E
IL
0 ±0.2 ±5
LSB
Pad leakage
(5)
* R
AS
8-bit mode 0 ±0.1 ±1.2
Bandgap voltage
(3)(6)
V
BG
1.17 1.245 1.32 V
1. Typical values assume V
DD
= 5.0 V, temperature = 25•C, f
ADCK
= 1.0 MHz unless otherwise stated. Typical values are for
reference only and are not tested in production.
2. Incremental I
DD
added to MCU mode current.
3. Values are based on characterization results, not tested in production.
4. Reference the ADC module specification for more information on calculating conversion times.
5. Based on typical input pad leakage current.
6. LVI must be enabled, (LVIPWRD = 0, in CONFIG1). Voltage input to ADCH4:0 = $1A, an ADC conversion on this channel
allows user to determine supply voltage.
Characteristic Conditions Symbol Min
Typ
(1)
Max Unit Comment