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參數(shù)資料
| 型號： | M38B57MCH-P218FP |
| 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) |
| 文件頁數(shù)： | 25/69頁 |
| 文件大?。?/td> | 1011K |
| 代理商： | M38B57MCH-P218FP |
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MITSUBISHI MICROCOMPUTERS
38B5 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
25
PRELIMINARY
Notice: This s not a final specification.
Some parametric imits are subject to change.
Fig. 20 Structure of Serial I/O1 Control Registers 1, 2
b7
b0
P6
2
/S
RDY1
P6
4
/S
BUSY1
pin control bits
0000: Pins P6
2
and P6
4
are I/O ports
0001: Not used
0010: P6
2
pin is an S
RDY1
output, P6
4
pin is an I/O port.
0011: P6
2
pin is an S
RDY1
output, P6
4
pin is an I/O port.
0100: P6
2
pin is an I/O port, P6
4
pin is an S
BUSY1
input.
0101: P6
2
pin is an I/O port, P6
4
pin is an S
BUSY1
input.
0110: P6
2
pin is an I/O port, P6
4
pin is an S
BUSY1
output.
0111: P6
2
pin is an I/O port, P6
4
pin is an S
BUSY1
output.
1000: P6
2
pin is an S
RDY1
input, P6
4
pin is an S
BUSY1
output.
1001: P6
2
pin is an S
RDY1
input, P6
4
pin is an S
BUSY1
output.
1010: P6
2
pin is an S
RDY1
input, P6
4
pin is an S
BUSY1
output.
1011: P6
2
pin is an S
RDY1
input, P6
4
pin is an S
BUSY1
output.
1100: P6
2
pin is an S
RDY1
output, P6
4
pin is an S
BUSY1
input.
1101: P6
2
pin is an S
RDY1
output, P6
4
pin is an S
BUSY1
input.
1110: P6
2
pin is an S
RDY1
output, P6
4
pin is an S
BUSY1
input.
1111: P6
2
pin is an S
RDY1
output, P6
4
pin is an S
BUSY1
input.
Serial I/O1 control register 2
(SIO1CON2 (SC12): address 001A
16
)
P5
1/
S
OUT1
P-channel output disable bit
0: CMOS 3-state (P-channel output is valid.)
1: N-channel open-drain (P-channel output is invalid.)
S
OUT1
pin control bit (at no-transfer serial data)
0: Output active
1: Output high-impedance
S
BUSY1
output S
STB1
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 0019
16
)
Serial I/O1 synchronous clock selection bits (P6
5
/S
STB1
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 S
STB1
output.)
11: Internal synchronous clock (P6
5
pin is an S
STB1
output.)
Transfer mode selection bit
0: Full duplex (transmit and receive) mode (P5
0
pin is an S
IN1
input.)
1: Transmit-only mode (P5
0
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:S
CLK11
(P5
3/
S
CLK12
pin is an I/O port.)
1:S
CLK12
(P5
2/
S
CLK11
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 P6
2
,P6
4
,P6
5
,and P5
0—
P5
3
are I/O ports)
01: 8-bits serial I/O
10: Not available
11: Automatic transfer serial I/O (8-bits)
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