IZ7008

Korzhenevskogo 12, Minsk, 220064, Republic of Bel-

arus

Fax:

+375 (17) 278 28 22,

Phone: +375 (17) 278 07 11, 277 24 70, 277 24 61,

277 69 16

E-mail: belms@belms.belpak.minsk.by

URL: www.bms.by

6

Index addressing is possible for all registers (except RO-R7) at setting bit 0 into 1 in the

state register RGS (R7), i.e. at (R7_0)=1.

State register RGS (register R7 with address 0x007).

Bit

Symbol

Description and function

State at supply

switch.

R7_7

MFR1

1 – masking of setting into 1 of interruption request flag

FR1 on timer 1 cleaning

0

R7_6

FR3

Interruption request flag from timer 3

(set into 1 on timer cleaning front)

0

R7_5

FR2

Interruption request flag from timer 2

(set into 1 on timer cleaning front)

0

R7_4

FR1

Interruption request flag from timer 1

(set into 1 on timer cleaning front)

0

R7_3

SVD

1 – at supply voltage less than reference

0

R7_2

SVD/LAMP

ON

0- switching-off supply voltage detector

1- switching-on supply voltage detector

0

R7_1

AL_EN

0 –sound inhibit (fixing output OUT_AL into 0)

1 – applying on output OUT_AL frequency 4096 Hz

under tune off mode or note frequency in tune foramtion

mode

0

R7_0

INDEX

0 –RAM index addressing inhibit, enable direct address-

ing of registers R8-R1F

1 – enable RAM index addressing, inhibit direct ad-

dressing of registers R8-R1F

0

Memory of data, displayed on LCD of maximum size 128 bits is located in address space

from 0x7E8 to 0x7F7 (banks FD, FE). For LCD memory only index addressing is possible. Con-

figuration of LCD memory at multiplexing level at 1/4 is shown in the figure