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M38B57MC Fiches technique(PDF) 24 Page - Mitsubishi Electric Semiconductor |
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M38B57MC Fiches technique(HTML) 24 Page - Mitsubishi Electric Semiconductor |
24 / 69 page MITSUBISHI MICROCOMPUTERS 38B5 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER 24 PRELIMINAR Y Notice: This is not a final specification. Some parametric limits are subject to change. Serial I/O qSerial I/O1 Serial I/O1 is used as the clock synchronous serial I/O and has an ordinary mode and an automatic transfer mode. In the automatic transfer mode, serial transfer is performed through the serial I/O automatic transfer RAM which has up to 256 bytes (addresses 0F0016 to 0FFF16: addresses 0F6016 to 0FFF16 are also used as Fig. 19 Block Diagram of Serial I/O1 FLD automatic display RAM). ________ The P62/SRDY1/AN8, P64/INT4/SBUSY1/AN10, and P65/SSTB1/AN11 pins each have a handshake I/O signal function and can select either “H” active or “L” active for active logic. Main data bus Serial I/O1 automatic transfer controller Local data bus Serial I/O automatic transfer RAM (0F0016—0FFF16) Serial I/O1 control register 3 XCIN XIN Internal system clock selection bit Serial I/O1 automatic transfer data pointer Address decoder Main address bus Local address bus “1” “0” 1/8 1/16 1/32 1/64 1/128 Serial I/O1 interrupt request P64 latch Serial I/O1 counter Synchronous circuit Serial I/O1 synchronous clock selection bit “1” P62 latch P52/SCLK11 “0” “1” “0” Internal synchronous clock selection bits 1/256 P65 latch P64/SBUSY1 P65/SSTB1 (P65/SSTB1 pin control bit) Serial transfer status flag “0” “1” “0” “1” P62/SRDY1 “0” “1” P52 latch P51/SOUT1 P50/SIN1 P51 latch Serial I/O1 register (8) “0” “1” Serial transfer selection bits 1/2 1/4 Serial I/O1 clock pin selection bit P53/SCLK12 “1” “0” P53 latch “0” “1” “0” “1” Serial I/O1 clock pin selection bits P62/SRDY1•P64/SBUSY1 pin control bit P62/SRDY1•P64/SBUSY1 pin control bit |
Numéro de pièce similaire - M38B57MC |
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Description similaire - M38B57MC |
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