MC68HC912DG128 Datasheet, PDF (391/452 Pages) Motorola, Inc – Microcontrollers

Freescale Semiconductor, Inc.
Electrical Specifications
Tables of Data
Table 19-7. ATD AC Characteristics (Operating)
V_DD = 5.0 Vdc ±10%, V_SS = 0 Vdc, T_A = T_L to T_H, ATD Clock = 2 MHz, unless otherwise noted
Characteristic
Symbol
Min
Max
Unit
MCU clock frequency (p-clock)
f_PCLK
2.0
8.0
MHz
ATD operating clock frequency
f_ATDCLK
0.5
2.0
MHz
ATD 8-Bit conversion period
clock cycles⁽¹⁾
conversion time⁽²⁾
n_CONV8
18
t_CONV8
9
32 cycles
16
µs
ATD 10-Bit conversion period
clock cycles⁽¹⁾
conversion time⁽²⁾
Stop and ATD power up recovery time⁽³⁾
VDDA = 5.0V
n_CONV10
20
t_CONV10
10
t_SR
34 cycles
17
µs
10
µs
1. The minimum time assumes a final sample period of 2 ATD clock cycles while the maximum time assumes a final sample
period of 16ATD clocks.
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.
Table 19-8. ATD Maximum Ratings
ATD reference voltage
V_RH ≤ V_DDA
V_RL ≥ V_SSA
V_SS differential voltage
Characteristic
V_DD differential voltage
V_REF differential voltage
Reference to supply differential voltage
Symbol
V_RH
V_RL
|V_SS−V_SSA|
V_DD−V_DDA
V_DDA−V_DD
|V_RH−V_RL|
|V_RH−V_DDA|
Value
Units
−0.3 to +6.5
V
−0.3 to +6.5
V
0.1
V
6.5
V
0.3
V
6.5
V
6.5
V
MC68HC912DG128 — Rev 3.0
MOTOROLA
Electrical Specifications
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Technical Data
391