EV8680 datasheet(26/39 Pages) CMLMICRO

26 / 39 page

Evaluation Kit for CMX868

EV8680

UM8680/2

A new function from the above table can be selected whenever the >ok prompt appears in the bottom

window.

Notes:

a) Programming files must be in the Intel hex format (.HEX) in order to be usable by this programming

software.

b) The PIC

µC supplied has a Configuration Word which is preset 3FB1H. This selects the crystal

oscillator, disables the watch dog timer, enables the power up timer and disables code protection. The

programming software currently defaults to 3FB1H. Consult Arizona Microchip Technology for more

information on the Configuration Word.

c) The “blank check” command (B) only looks at the first location. A programmed device will always

have data in this location as it is the program start address.

d) For each of the commands B, P, R and V the user will be prompted to manually reset the target

µC,

by pressing the RESET switch (SW1) on the EV8680 Evaluation Board.

This is because PIC

programming always starts from location 0000 and the program counter can only be incremented.

e) Pressing A will display the program data in the bottom window, formatted in pages of 48

consecutive locations.

Use the <PageUp> and <PageDown> keys to scroll through the data.

Pressing <Esc> will return the user to the >ok prompt.

f) Programming a blank PIC16LC76 using the PICPROGB software takes approximately 2 minutes.

g) Customers are advised to use PIC16C76JW

µC devices (not supplied) for further PIC firmware

development, however, these devices are not guaranteed for low volt operation.

Customers re-

programming this development PIC must erase the existing program by placing the device in a UV-

Eraser for approximately 15 minutes.

TO LEAVE PROGRAMMING MODE

a) Remove power from board (including the programming voltage, VPP).

b) Remove 2-way jumper connecting MODEA to MODEB.

c) Power up board as described in previous sections for normal operation.

1.6.4.2 Terminal Emulator

Users will need to run a suitable terminal emulator on their PC in order to communicate with the PIC

µC on the Evaluation Kit. ‘Hyper Terminal’, which is supplied with the Windows 95/NT installations, is

suitable for this purpose.

Hyper Terminal Setup

Emulation VT100

ASCII Character set

ASCII Receiving:

Wrap lines that exceed terminal width.

COM Port Settings:

Bits per second

19,200

Data bits

Parity

None

Stop bits

Flow Control

Hardware

EV8680 Datasheet(PDF) 26 Page - CML Microcircuits

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