R

EM6607

Copyright © 2005, EM Microelectronic-Marin SA

30

www.emmicroelectronic.com

13 STroBe / ReSeT Output

The STB/RST output pin is used to indicate the EM6607 RESET condition as well as write operations to ports B, C and D.

For a PortB, PortC and PortD write operation the STROBE signal goes high for half of the system clock period. Write is

effected on falling edge of the strobe signal and it can this be used to indicate when data changes at the output port pins. In

addition, any EM6607 internal RESET condition is indicated by a continuous high level on STB/RST for the period of the

RESET.

14 Test at EM - Active Supply Current test

For this purpose, five instructions at the end of the ROM will be added.

Testloop:

STI00H, 0AH

LDR

1BH

NXORX

JPZ

Testloop

JMP

00H

To stay in the testloop, these values must be written in the corresponding addresses before jumping in the loop:

1BH:

0101b

32H:

1010b

6EH:

0010b

6FH:

0011b

Free space after last instruction: JMP 00H (0000)

Remark: empty space within the program are filled with NOP (FOFF).