參數(shù)資料
型號(hào)： M38749MFT-XXXGP
廠商： Mitsubishi Electric Corporation
英文描述： SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
中文描述： 單芯片8位CMOS微機(jī)
文件頁(yè)數(shù)： 36/92頁(yè)
文件大?。?/td> 1292K
代理商： M38749MFT-XXXGP
41
3874 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
Fig. 35 Structure of serial I/O3 control registers 1 and 2
b7
b0
b7
b0
P85/SRDY3 P86/SBUSY3 pin control bits
0000: P85, P86 pins are I/O ports.
0001: Unused
0010: P85 pin is SRDY3 output, P86 pin is I/O port.
0011: P85 pin is SRDY3 output, P86 pin is I/O port.
0100: P85 pin is I/O port, P86 pin is SBUSY3 input.
0101: P85 pin is I/O port, P86 pin is SBUSY3 input.
0110: P85 pin is I/O port, P86 pin is SBUSY3 output.
0111: P85 pin is I/O port, P86 pin is SBUSY3 output.
1000: P85 pin is SRDY3 input, P86 pin is SBUSY3 output.
1001: P85 pin is SRDY3 input, P86 pin is SBUSY3 output.
1010: P85 pin is SRDY3 input, P86 pin is SBUSY3 output.
1011: P85 pin is SRDY3 input, P86 pin is SBUSY3 output.
1100: P85 pin is SRDY3 output, P86 pin is SBUSY3 input.
1101: P85 pin is SRDY3 output, P86 pin is SBUSY3 input.
1110: P85 pin is SRDY3 output, P86 pin is SBUSY3 input.
1111: P85 pin is SRDY3 output, P86 pin is SBUSY3 input.
Serial I/O3 control register 2
(SIO3CON2 (SC32) : address 0015 16)
P82/SOUT3 P84/SCLK3 P-channel output disable bit
0: CMOS output (in output mode)
1: N-channel open-drain output (in output mode)
SOUT3 output control bit (when serial data is not transferred)
0: Output active
1: Output high impedance
SBUSY3 output SSTB3 output function selection bit
(valid in automatic transfer mode)
0: Functions as signal for each 1-byte
1: Functions as signal for each transfer data set
Serial transfer status flag
0: Serial transfer complete
1: Serial transfer in-progress
Serial I/O3 control register 1
(SIO3CON1 (SC31) : address 0014 16)
Serial I/O3 synchronous clock selection bits (P8 7/SSTB3 pin control bits)
00 : Internal synchronous clock (P87 pin is I/O port.)
01 : External synchronous clock (P8 7 pin is I/O port.)
10 : Internal synchronous clock (P87 pin is SSTB3 output.)
11 : Internal synchronous clock (P87 pin is SSTB3 output.)
Transfer mode selection bit
0 : Full duplex (transmit/receive) mode (P8 3 pin is SIN3 I/O.)
1 : Transmit-only mode (P83 pin is I/O port.)
Serial I/O initialization bit
0 : Serial I/O initialization
1 : Serial I/O enabled
Automatic transfer RAM transmit/receive address selection bit
0 : Transmit/Receive address match 200 16 to 2FF16
(Set automatic transfer data pointer to 00 16 to FF16.)
1 : Transmit address 20016 to 27F16
Receive address 28016 to 2FF16
(Set automatic transfer data pointer to 00 16 to 7F16.)
Serial transfer selection bits
00 : Serial I/O disabled (P82 to P87 pins are I/O ports.)
01 : 8-bit serial I/O
10 : Arbitrary bit serial I/O
11 : Automatic transfer serial I/O (8-bit)
Serial I/O3 transfer direction selection bit
0 : LSB First
1 : MSB First
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