Port Box; Rate Box - Renesas M-Station User Manual

Baseboard for 78k0 and 78k0s micro-boards

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M-Station Baseboard

8.2.1

Port Box

The Port box contains eight programming channels: four SIO channels and four UART channels. The

channels available for a particular flash MCU may be limited to only one of the eight, or to a subset of

the total possible. Refer to the flash-programming section of your device documentation to determine

which channel(s) may be used, and then select the appropriate one from the list.

Once you select a channel, the V

pulses associated with that channel. You may check the number of pulses shown against the

information given in the flash MCU documentation, which will list the number of V

with a particular channel and pins.

Note that the choice of channel may be dictated by which pins on the flash MCU are used for flash

programming. Often one set of pins is available for one SIO channel, and another set of pins is

available for another SIO channel. UART channels may or may not use the same pins as one of the

SIO channels.

When you select an SIO channel, set JP8 and JP9 in the SIO position, with pins 1–2 connected on

each: USO-TXDSO on JP8 and USI-RXDSI on JP9. When you select a UART channel, set JP8 and

JP9 in the UART position, with pins 2–3 connected on each: TXDSO-UTXD on JP8 and RXDSI-URXD

on JP9.

8.2.2

The Rate box contains a selection of available serial port rates that can be used in flash programming.

For transfers of large amounts of data, such as when programming a large user program, or verifying a

program of any size, setting a faster serial rate allows the operation to go more quickly.

For SIO channels, you may select the serial I/O rate from a low of 2.5 kHz (2500 bits per second) to a

high of 188 kHz (188,000 bits per second). When you change from a UART channel to an SIO

channel, the default rate is set to 50 kHz. Depending on the main clock frequency of the device being

programmed, devices may not be able to operate at the highest bit rates. It is recommended that you

start at 50 kHz; after successful programming is done at this rate, you may try faster rates.

For UART channels, the rates for programming are 9600, 19200, 38400, and 76800 baud. When

switching from an SIO channel to a UART channel, the default rate is set at 9600. Depending on the

main clock frequency of the device being programmed, you may not be able to operate devices at the

highest baud rate possible. It is recommended that you start at 9600 or 19200 baud; after successful

programming is done at these rates, you may try faster rates.

/FLMD0 Pulse box is updated to show the number of V

or FLMD0

pulses associated

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