SA9110A

sames

11/18

Word

Bit

Function

Description

number number

5

27..0

Register 'Total'

Registers 1, 2, 3 and 4 are added and stored in the

register 'Total'

6

31..16

ROM

Don't care

6

15..0

Manufacturers

16 bits are available for the manufacturer of the

Identification

metering system as a system identification

7

31..28

ROM

Don't care

7

27..0

System

28 bits are available for the manufacturer of the

Identification

metering system as a system identification

8

31..0

ROM

Don't care

9

31

Programmed slope

Programmed slope select bit must be set if the

select

default slope in ROM is not used

9

30..25

ROM

Don't care

9

24-22

SAMES defined

Bits must be set to 0 for correct functionality

register

9

21

Sign of offset

By setting the sign bit a negative value is indicated

9

20..14

Offset

Offset of the device in binary

9

13

Sign of slope

By setting the sign bit a negative value is indicated

9

12..0

Slope

Slope of the device in binary. (default = 11389)

10

31..0

ROM

Don't care

The first bit of the programming data is written to word number 1, bit 31. The last

bit is written to word number 10, bit 0.

Programming procedure:

The PGM pin is pulled low and the PCLK pin should be clocked with an external

clock. The programming data on the PDTA pin must be stable during the rising edge

of the clock signal on PCLK.

The clock signal on PCLK should not exceed 200 kHz and does not have to be

synchronised with the oscillator frequency (FOSC).

Programming mode is interrupted if PGM goes high.

PDTA

BIT-N0

WORD-NO

DR-00957

29

1

31

30

11

1

28

27

1

PCLK

PGM

0

10

24

1

1

1

26

25

23

1