MC908JL3ECPE Datasheet, PDF (144/180 Pages) Freescale Semiconductor, Inc – Microcontrollers

Electrical Specifications
2
1.75
MC68HRC908JL3E/JK3E/JK1E
1.50
5.5 V
1.25
3.3 V
1
0.75
0.5
0.25
0
0
1
2
3
4
5
6
7
8
f_OP or f_BUS (MHz)
Figure 16-6. Typical Wait Mode I_DD (MC68HRC908JL3E/JK3E/JK1E),
with All Modules Turned Off (25 °C)
16.12 ADC Characteristics
Table 16-10. ADC Characteristics
Characteristic
Supply voltage
Input voltages
Resolution
Absolute accuracy
ADC internal clock
Conversion range
Power-up time
Conversion time
Sample time⁽¹⁾
Zero input reading⁽²⁾
Full-scale reading⁽³⁾
Input capacitance
Input leakage⁽³⁾
Port B/port D
Symbol
V_DDAD
V_ADIN
B_AD
A_AD
f_ADIC
R_AD
t_ADPU
t_ADC
t_ADS
Z_ADI
F_ADI
C_ADI
—
Min
2.7
(V_DD min)
V_SS
8
± 0.5
0.5
V_SS
16
14
5
00
FE
—
—
Max
5.5
(V_DD max)
V_DD
8
± 1.5
1.048
V_DD
15
—
01
FF
(20) 8
±1
Unit
V
V
Bits
LSB
MHz
V
t_AIC cycles
t_AIC cycles
t_AIC cycles
Hex
Hex
pF
μA
Comments
Includes quantization
t_AIC = 1/f_ADIC, tested
only at 1 MHz
V_IN = V_SS
V_IN = V_DD
Not tested
1. Source impedances greater than 10 kΩ adversely affect internal RC charging time during input sampling.
2. Zero-input/full-scale reading requires sufficient decoupling measures for accurate conversions.
3. The external system error caused by input leakage current is approximately equal to the product of R source and input
current.
MC68HC908JL3E Family Data Sheet, Rev. 4
144
Freescale Semiconductor