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TMP47P201 датащи(PDF) 6 Page - Toshiba Semiconductor

номер детали TMP47P201
подробное описание детали  CMOS 4-bit Microcontroller
PDF  32 Pages
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производитель  TOSHIBA [Toshiba Semiconductor]
домашняя страница  http://www.semicon.toshiba.co.jp/eng
Logo TOSHIBA - Toshiba Semiconductor

TMP47P201 датащи(HTML) 6 Page - Toshiba Semiconductor

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TOSHIBA CORPORATION
TMP47C101/201
Figure 2-3. Program Memory Map
2.3 H Register and L Register
The H register and L register are 4-bit general registers. They
are also used as a register pair (HL) for the data memory (RAM)
addressing pointer. The RAM consists of pages, each page
being 16 words long (1 word = 4 bits). The H register specifies
a page and the L register specifies an address in the page.
The L register has the auto-post-increment/decrement
capability, implementing the execution of composite instruc-
tions. For example, [ST A, @HL+] instruction automatically in-
crements the contents of the L register after data transfer.
During the execution of [SET @L], [CLR @L], or [TEST @L]
instructions, the L register is also used to specify the bits cor-
responding to I/O port pins R73 through R40 (the indirect ad-
dressing of port bits by the L register).
Example: To Write immediate values “5” and FH” to data
memory addresses 10H and 11H.
LD
HL, #10H
;
HL 10H
ST
#5,@HL+
;
RAM [10H] 5H, LR←LR + 1
ST
#0FH,@HL+ ;
RAM [11H] FH, LR←LR + 1
Figure 2-4. Configuration of H and L Registers



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