EM6812F2TP24B datasheet(7/81 Pages) EMMICRO

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EM6812

www.emmicroelectronic.com

2.2

Programming connections

The EM6812 embedded Flash program memory is programmed using standard microcontroller programmers available from

rd parties.

Programmers which currently support the EM6812:

•

ELNEC (SmartProg / LabProg / JetProg)

www.elnec.com

For an updated list please consult:

www.elnec.com/sw/dev_html/em_microelectronic_dev.htm

Erase/Write

:The programmer allows to erase/write the whole program memory at once (bulk erase). Typical erase time is

20ms for the whole Flash memory. Erase is immediately followed by write (writing 1 intruction after the other). Typical write

time is 60µs/word.

Code protection

: The program memory content can not be read back, instead a checksum (CRC) is generated and

compared with the programmer’s CRC value.

Last Address read

: The very last address of the program memory may be read back. (code identification)

Connection into the DIL connector is 1 to 1, DIL pin 1 goes to SO or TSSOP pin1 and so on. An adapter is needed for the

SO and TSSOP packages.

On-board programming is possible by connecting the 5 programming terminals directly onto the PCB. This can be done with

a DIL to PCB connecting cable (not furnished) or by using the on-board programming connector, which is present on some

of the programmers.

Figure 2. On-board programming with DIL-adapter cable

The programming interface terminals PB5 and PB7 are automatically configured in input mode as soon as Test terminal

goes high. This allows the programmer to download the programming setup into the circuit. As soon as a valid programming

mode is recognized the circuit will enter a special state and allow only Flash programming and CRC check to be done.

During programming the PortA is configured as output driving VSS level, PB[4:0] is in input state, PB6 is output.

EM6812

4567

10 11 12

24 23 22 21 20 19 18 17 16 15 14 13

Dil Footprint

Programmer

EM6812 on

PCB

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