Equinox Systems GEMINI Podręcznik Użytkownika Pobierz pdf (Strona 38)

User Guide V1.10

Connector recommendations

The IDC connector supplied with the GEMINI-1 programmer is ‘bump’ polarised so that it

can not be inserted the wrong way around in a polarised socket. If the connector used on

the target system is not polarised, it is advised that measures are taken to prevent the

connector being plugged in the wrong way around. This could be achieved by removing

pin 8 from the target header and placing a blanking piece of plastic in pin 8 of the

cable header.

ISP Pin Assignments

Target System - ISP Design Requirements continued

GEMINI-1 - Target System Connection

Details

The programmer 10-way ribbon cable supplied is

terminated with a standard 10-way 0.1" pitch IDC plug.

This is designed to mate with the complimentary male

10-way IDC header on the target system. The pin-out of

the header is shown opposite:

N/C

PROG_Vcc

PROG_GND

PROG_VPP

PROG_PSEN

PROG_TXD

PROG_ACTIVE

PROG_RESET

PROG_RXD

10-Way IDC Header

Top Pin View

Note: This is the view of the connector fitted to the target

board, as seen from above (the component side).

Pin GEMINI-1 Target Function Description

Pin Name Microcontroller

Pin Name

1 PROG_Vcc Vcc P Target Vcc connection

2 PROG_Vpp EA/Vpp I Target Vpp pin - Vpp is applied to this pin (if required)

3 PROG_PSEN PSEN Driven LOW by programmer to enter ‘Boot Loader’ mode

4 PROG_TXD RXD I Programmer TXD line connects to microcontroller TXD line

5 PROG_ACTIVE LED or Interrupt pin - Programmer Active LED/Interrupt pin

6 PROG_RXD TXD O Programmer RXD line connects to microcontroller TXD line

7 PROG_GND Vss P Target GROUND (Vss) connection

8 N/C - - Not Connected

9 PROG_GND Vss P Target GROUND (Vss) connection

10 PROG_RESET RESET - Target RESET control pin or RESET Circuit

KEY: N/C = No Connect I = Input O = Output P = Pause

Figure 20

Figure 25

1 2 ... 33 34 35 36 37 38 39 40 41 42 43 ... 57 58

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