mc68hc912dg128 Freescale Semiconductor, Inc, mc68hc912dg128 Datasheet - Page 391

• Manufacturer Part Number: mc68hc912dg128
• Description: M68hc12 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

MC68HC912DG128 — Rev 3.0
MOTOROLA
ATD reference voltage
V
V
V
Reference to supply differential voltage
MCU clock frequency (p-clock)
ATD operating clock frequency
ATD 8-Bit conversion period
ATD 10-Bit conversion period
Stop and ATD power up recovery time
1. The minimum time assumes a final sample period of 2 ATD clock cycles while the maximum time assumes a final sample
2. This assumes an ATD clock frequency of 2.0MHz.
3. From the time ADPU is asserted until the time an ATD conversion can begin.
SS
DD
REF
V
V
RH
RL
period of 16ATD clocks.
differential voltage
differential voltage
differential voltage
V
V
SSA
V
DDA
DD
5.0 Vdc 10%, V
clock cycles
conversion time
clock cycles
conversion time
VDDA = 5.0V
Table 19-7. ATD AC Characteristics (Operating)
Characteristic
Characteristic
Freescale Semiconductor, Inc.
(1)
(1)
SS
For More Information On This Product,
Table 19-8. ATD Maximum Ratings
(2)
(2)
0 Vdc, T
(3)
Go to: www.freescale.com
Electrical Specifications
A
T
L
to T
H
, ATD Clock
n
t
f
Symbol
n
t
CONV10
ATDCLK
CONV10
CONV8
f
CONV8
2 MHz, unless otherwise noted
PCLK
t
V
V
V
SR
V
V
Symbol
DD
DDA
RH
SS
RH
V
V
RH
RL
V
V
V
V
V
SSA
DDA
DDA
RL
DD
Min
2.0
0.5
18
20
10
9
Electrical Specifications
0.3 to 6.5
0.3 to 6.5
Value
0.1
6.5
0.3
6.5
6.5
Max
8.0
2.0
32
16
34
17
10
Technical Data
Tables of Data
cycles
cycles
Units
MHz
MHz
Unit
µs
µs
V
V
V
V
V
V
V
s
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