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TMP47C201P датащи(PDF) 6 Page - Toshiba Semiconductor |
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TMP47C201P датащи(HTML) 6 Page - Toshiba Semiconductor |
6 / 32 page 6/32 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 |
Аналогичный номер детали - TMP47C201P |
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Аналогичное описание - TMP47C201P |
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