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M38B57MC Fiches technique(PDF) 25 Page - Mitsubishi Electric Semiconductor |
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M38B57MC Fiches technique(HTML) 25 Page - Mitsubishi Electric Semiconductor |
25 / 69 page MITSUBISHI MICROCOMPUTERS 38B5 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER 25 PRELIMINAR Y Notice: This is not a final specification. Some parametric limits are subject to change. Fig. 20 Structure of Serial I/O1 Control Registers 1, 2 b7 b0 P62/SRDY1 • P64/SBUSY1 pin control bits 0000: Pins P62 and P64 are I/O ports 0001: Not used 0010: P62 pin is an SRDY1output, P64 pin is an I/O port. 0011: P62 pin is an SRDY1output, P64 pin is an I/O port. 0100: P62 pin is an I/O port, P64 pin is an SBUSY1 input. 0101: P62 pin is an I/O port, P64 pin is an SBUSY1 input. 0110: P62 pin is an I/O port, P64 pin is an SBUSY1 output. 0111: P62 pin is an I/O port, P64 pin is an SBUSY1 output. 1000: P62 pin is an SRDY1 input, P64 pin is an SBUSY1 output. 1001: P62 pin is an SRDY1 input, P64 pin is an SBUSY1 output. 1010: P62 pin is an SRDY1 input, P64 pin is an SBUSY1 output. 1011: P62 pin is an SRDY1 input, P64 pin is an SBUSY1 output. 1100: P62 pin is an SRDY1 output, P64 pin is an SBUSY1 input. 1101: P62 pin is an SRDY1 output, P64 pin is an SBUSY1 input. 1110: P62 pin is an SRDY1 output, P64 pin is an SBUSY1 input. 1111: P62 pin is an SRDY1 output, P64 pin is an SBUSY1 input. Serial I/O1 control register 2 (SIO1CON2 (SC12): address 001A 16) P51/SOUT1 P-channel output disable bit 0: CMOS 3-state (P-channel output is valid.) 1: N-channel open-drain (P-channel output is invalid.) SOUT1 pin control bit (at no-transfer serial data) 0: Output active 1: Output high-impedance SBUSY1 output • SSTB1 output function selection bit (Valid in automatic transfer mode) 0: Functions as each 1-byte signal 1: Functions as signal for all transfer data Serial transfer status flag 0: Serial transfer completion 1: Serial transferring b7 b0 Serial I/O1 control register 1 (SIO1CON1 (SC11):address 001916) Serial I/O1 synchronous clock selection bits (P6 5/SSTB1 pin control bit) 00: Internal synchronous clock (P6 5 pin is an I/O port.) 01: External synchronous clock (P6 5 pin is an I/O port.) 10: Internal synchronous clock (P6 5 pin is an SSTB1 output.) 11: Internal synchronous clock (P6 5 pin is an SSTB1 output.) Transfer mode selection bit 0: Full duplex (transmit and receive) mode (P5 0 pin is an SIN1 input.) 1: Transmit-only mode (P50 pin is an I/O port.) Serial I/O initialization bit 0: Serial I/O initialization 1: Serial I/O enabled Serial I/O1 clock pin selection bit 0:SCLK11 (P53/SCLK12 pin is an I/O port.) 1:SCLK12 (P52/SCLK11 pin is an I/O port.) Transfer direction selection bit 0: LSB first 1: MSB first Serial transfer selection bits 00: Serial I/O disabled (pins P62,P64,P65,and P50—P53 are I/O ports) 01: 8-bits serial I/O 10: Not available 11: Automatic transfer serial I/O (8-bits) |
Numéro de pièce similaire - M38B57MC |
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Description similaire - M38B57MC |
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