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Chapter 14: Specifications and Characteristics
Emulator Specifications and Characteristics
Emulator Specifications and Characteristics
This section contains the following types of emulator specifications and
characteristics:
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Processor Compatibility
The HP 64746 is compatible with the Motorola 68302 microprocessor with clock
speeds up to 20.0 MHz, and any other microprocessors that comply with the
specifications of the Motorola 68302. The HP 64746 supports the MC68302 in
either 8 or 16 bit mode. CPU disable mode is not supported.
Electrical
This section describes the electrical characteristics of the HP 64746 68302
Emulator and the HP 64700 Card Cage.
Electrical Characteristics of the HP 64746 Emulator
The following specifications are for an emulator with a clock speed of 16.67 MHz.
Maximum Clock Speed The maximum external clock speed is at least 20 MHz
for the HP 64746 emulator. No wait states are required for emulation or target
system memory. (The internal clock speed is 16 MHz.)
Power The emulator draws an additional 40 milliamps from the target system
when operating at 16.67 MHz.
Unbuffered Signals The following signals are unbuffered to the target system:
/RESET, /HALT, PB1-PB11, PA0-PA15, RXD1, TXD1, RCLK1, TCLK1, /CD1,
/CTS1, /RTS1, BRG1, BCLR, /RMC, IAC.
Data Inputs One 74FCT245A load per bit plus 50 pf capacitance.
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Processor compatibility.
Electrical characteristics (including emulator timing).
Physical characteristics.
Environmental characteristics.
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