Electrical Characteristics - Motorola M68HC08 Reference Manual

4.4.2.1 Electrical Characteristics of the Optoisolation Board
Characteristic
Power Supply Voltage
Quiescent Current
Min Logic 1 Input Voltage
Max Logic 0 Input Voltage
Analog Input Range
Input Resistance
Analog Output Range
Digital Delay Time
Analog Delay Time
1. Power supply powers optoisolation board only.
2. Current consumption of optoisolation board plus DSP EMV board (powered from this power supply)
3. Maximum current handled by dc/dc converters
DRM028 — Rev 0
MOTOROLA
Freescale Semiconductor, Inc.
250 ns for digital signals, and 2 s for analog signals. Grounds are
separated by the optocouplers' galvanic isolation barrier.
Both input and output connections are made via 40-pin ribbon cable
connectors. The pin assignments for both connectors are the same. For
example, signal PWM_AT appears on pin 1 of the input connector and
also on pin 1 of the output connector. In addition to the usual motor
control signals, an MC68HC705JJ7CDW serves as a serial link, which
allows controller software to identify the power board.
Power requirements for controller side circuitry are met with a single
external 12-Vdc power supply. Power for power stage side circuitry is
supplied from the power stage through the 40-pin output connector.
The electrical characteristics in
and a 12-Vdc power supply voltage.
Table 4-3. Electrical Characteristics
Symbol Min
Vdc 10
(1)
I
70
CC
V
2.0
IH
V
—
IL
V
0
In
R
—
In
V
0
Out
t
—
DDLY
t
—
ADLY
Hardware Design
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High-Voltage Hardware Set Components
Table 4-3 apply to operation at 25 C,
Typ Max Units
12 30
(2) (3)
200 500
— —
— 0.8
— 3.3
10 —
— 3.3
0.25 —
2 —
Hardware Design
Notes
V
mA dc/dc converter
V HCT logic
V HCT logic
V
k
V
s
s
Designer Reference Manual
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