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TC9318AFAG 数据表(PDF) 10 Page - Toshiba Semiconductor |
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TC9318AFAG 数据表(HTML) 10 Page - Toshiba Semiconductor |
10 / 56 page TC9318AFAG/AFBG 2006-07-27 10 5. Data Memory (RAM) Data memory is composed of 4 bit × 256 words and used for storing data. This 256 words are expressed with row address (4 bits) and column address (4 bits). 192 words (row address = 4H~FH) among the data memory are indirect addressing by G-register. For this reason, when carrying out data processing within this territory, it is necessary to designate row address by G-register beforehand Area of 00H~0FH address in data memory is called general register, and can be used only by designating column address (4 bits). These 16 general registers can be used for operation and transfer between data memories. Further, it can also be used as ordinary data memory. Note 7: The column address (4 bits) to designate general register becomes register number of the general register. Note 8: It is also possible to indirectly designate all of row address (= 0H~FH) by G-register. 6. G-Register (G-REG.) G-register is a 4 bits register for addressing row address (DR = 4H~FH) of 192 words in data memory. Content of this register is effective during executing MVGD instruction, MVGS instruction, and is not related with the execution of other instructions. This register is treated as one of the port, and its content is set by the execution of OUT1 instruction among input and output instructions. (refer to register port item 1) 7. Data Register (DATA REG.) This is a register composed of 1 × 16 bits. In this register, 16 bits data of optional address among the program memory in 000H~3FFH is loaded during executing of DAL instruction. This register is treated as one of the port, and when IN1 instruction among input and output instruction is executed, it’s content is read in the data memory in 4 bits unit. (refer to register port item 2) |
类似零件编号 - TC9318AFAG |
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类似说明 - TC9318AFAG |
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