Motorola M68HC08 - Manual (Page 65)

Hardware Design
All HW Sets Components
DRM028 — Rev 0 Designer Reference Manual
MOTOROLA Hardware Design 65
through the 40-pin ribbon cable from the optoisolation board or
low-voltage power stage.
The control board is designed to run in two configurations. It can be
connected to an M68EM08MR32 emulator via an M68CBL08A
impedance matched ribbon cable, or it can operate using the daughter
board. The M68EM08MR32 emulator board may be used in either an
MMDS05/08 or MMEVS05/08 emulation system.
Figure 4-4 shows a block diagram of the board’s circuitry.
Figure 4-4. MC68HC908MR32 Control Board
4.3.1.1 Electrical Characteristics of the MC68HC908MR32 Control Board
The electrical characteristics in Table 4-1 apply to operation at 25
°C.
OPTOISOLATED
RS-232 I/F
TERMINAL
dc POWER
12 Vdc
REGULATED
POWER SUPPLY
PWM LEDs (6)
FORWARD/REVERSE
SWITCH
START/STOP
SWITCH
SPEED
POT
EMULATOR/
PROCESSOR
CONNECTOR
RESET
SWITCH
(2) OPTION
SWITCHES
OVERCURRENT/
OVERVOLTAGE
INPUTS
PWM (6)
OUTPUTS
CURRENT/TEMP
SENSE INPUTS
MISC. POWER AND
CONTROL I/O
OPTO/POWER DRIVER I/O CONNECTOR
BACK EMF
INPUTS
CONFIG. JU
MPERS
40-PIN RIBBON
CONNECTOR
INPUT
TACHOMETER
HALL EFFECT
INPUTS (3)
I/F
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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