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IZ7008 Arkusz danych(PDF) 4 Page - Integral Corp.

Numer części IZ7008
Szczegółowy opis  8-BIT MICROCONTROLLER WITH LCD DRIVER
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Producent  INTEGRAL [Integral Corp.]
Strona internetowa  http://www.iksemi.com/
Logo INTEGRAL - Integral Corp.

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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
4
MICROCONTROLLER STRUCTURE
ROM
Internal ROM contains 1536 commands (16–bit instructions) at the addresses from 0x000
to 0x5FF. ROM area in the range from 0x000 to 0x0FF (256 commands) and from 0x3FE to
0x4A8 (178 commands) is reserved for interruptions processing programs, system reset and mi-
crocontroller testing. User's program if mainly located at the addresses from 0x100 to 0x3FD and
from 0x4AA to 0x5FF (1110 commands).
MICROCONTROLLER REGISTER RAM
RAM is organized as banks by 8 registers and contains internal function registers, data
RAM, special registers and data memory, directly displayed on LCD.
Microcontroller internal function registers are in the address area from 0x000 to 0x007
(bank 00). Their purpose:
R0, R1, R2, R3 - accumulators;
R4, R5, R6 - base address registers BL, BM, BH of storing number of addressed bank;
R7- register of microcontroller state (RGS).
Internal data RAM (RAM) of 40 bytes is in the address space from 0x008 to 0x02F (banks
01, 02, 03, 04, 05).
RAM registers addressing.
RO-R3, R4 (or BL), R5 (or BM), R6 (or BH), R8-R1F - names of RAM registers in the
commands at direct addressing. For registers RO-R7 only direct addressing is possible. For regis-
ters R8-RF (or L0-L7), R10-R17 (or M0-M7), R18-R1F (or H0-H7) direct addressing is possible
only if bit 0 in state register RGS (R7) is reset into 0, i.e. (R7_0)=0.
BL, BM, BH – base address registers (R4, R5, R6 respectively). At index register address-
ing the contents of base registers defines data bank number. At index addressing of RAM registers
the contents of base registers defines data bank number.
L0-L7, M0-M7, H0-H7 – names of RAM registers in commands at index addressing. For
names of registers LO-L7 data bank number is defined by contents of base register BL, for names
of registers MO-M7 data bank number is defined by contents of base register BM, for names of
registers HO-H7 data bank number is defined by contents of base register BH. To calculate physi-
cal address, the contents of base register indicated in the command should be multiplied by 8 and
a number from 0 to 7 should be added respectively. For example: when recording in the command
«M5» the physical address is equal to ((BM)*8+5).


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