
L
G
R
Electrical Characteristics
General Release Specification
MC68HC(7)05H12
—
Rev. 1.0
178
Electrical Characteristics
MOTOROLA
16.6 Control Timing
(V
DD
= 5.0Vdc
±
10%, V
SS
= 0Vdc, T
A
= –40
°
C to +85
°
C, unless otherwise noted)
Characteristic
16.7 A/D Converter Characteristics
1. The minimum period tILIL should not be less than the number of cycle times it takes to execute the interrupt ser-
vice routine plus 21 t
CYC
.
(V
DD
= 5.0Vdc
±
10%, V
SS
= 0Vdc, T
A
= –40
°
C to +85
°
C, unless otherwise noted)
Parameter
Symbol
Min
Max
Unit
Oscillator Frequency
Crystal / Ceramic Resonator
External Clock Source
f
OSC
—
dc
4.2
4.2
MHz
MHz
Internal Operating Frequency (f
OSC
/ 2)
Crystal / Ceramic Resonator
External Clock
f
OP
—
dc
2.1
2.1
MHz
MHz
Cycle Time (1 / f
OP
)
t
CYC
476
—
ns
RESET Pulse Width
t
RL
1.5
—
t
CYC
IRQ Interrupt Pulse Width Low (Edge-Triggered)
t
ILIH
120
—
ns
IRQ Interrupt Pulse Period
t
ILIL
—
(1)
—
t
CYC
OSC1 Pulse Width
t
OH
,t
OL
100
—
ns
Characteristic
Min
Max
Unit
Resolution
Number of bits resolved by the A/D
8
—
Bit
Monotonicity
Conversion result never decreases with an
increase in input voltage and has no missing
codes
GUARANTEED
Quantization Error
Uncertainly due to converter resolution
—
±
1/2
LSB
Offset Error
DC shift of the entire transfer curve of an ideal
converter
(1)
—
±
1/2
LSB
Gain Error
Difference between the actual and expected
gain (end point to end point)
(1)
—
±
1/2
LSB
Differential Linearity Error
Difference between the actual analog voltage
change and the ideal voltage change
(1)
—
±
1/2
LSB
Integral Linearity Error
Max deviation from the best straight line
through the A/D transfer characteristics
(1)
—
±
1/2
LSB