604-00030 Parallax Inc, 604-00030 Datasheet - Page 8

• Manufacturer Part Number: 604-00030
• Description: IC FLOATING-POINT COPROC V2 8DIP
• Manufacturer: Parallax Inc

Specifications of 604-00030

• Processor Type: Floating-Point Co-Processor
• Voltage: 4.75 V ~ 5.25 V
• Mounting Type: Through Hole
• Package / Case: *
• Product: Microcontroller Accessories
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Speed: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

Debug Monitor
Using the TSTIN and TSTOUT Pins
The TSTIN and TSTOUT pins can be configured as an activity monitor or as a serial interface for the built-in debug
monitor. The mode of operation is selected by the logic value of the TSTIN pin whenever the
uM-FPU is reset. If the serial interface is not being used, the TSTIN pin should be tied to GND.
Activity Monitor
If the TSTIN pin is Low when the uM-FPU is reset, the TSTOUT pin is configured to generate an activity
monitor signal. In this mode TSTOUT will be High when the uM-FPU is Busy, and will be Low when it is Ready.
TSTOUT can be connected to an LED to provide a visual activity indicator, used as an input to an oscilloscope or
logic analyzer during testing, or left unconnected.
Activity Indicator
Serial Interface for Debug Monitor
If the TSTIN pin is High when the uM-FPU is reset, the TSTIN pin is configured as a serial input and the
TSTOUT pin is configured as a serial output. The uM-FPU has a built-in debug monitor that is accessed
through the TSTIN and TSTOUT serial connection. This enables the uM-FPU to be easily connected to a
PC for debugging. The serial connection is configured as 57,600 baud, 8 bits, no parity, and one stop bit.
There is no flow control. Note: The idle state of an RS-232 connection will assert a high level on the TSTIN pin, so
provided the uM-FPU is connected to an active idle RS-232 port when the uM-FPU is reset,
TSTIN and TSTOUT will be properly configured as a serial interface.
Serial Interface Connection
8
Micromega Corporation
uM-FPU V2 Datasheet