參數(shù)資料
型號(hào)： M37224M3
廠商： Mitsubishi Electric Corporation
英文描述： Single Chip 8 Bits Microcomputer(8位單片機(jī))
中文描述： 單芯片8位單片機(jī)（8位單片機(jī)）
文件頁數(shù)： 21/83頁
文件大小： 901K
代理商： M37224M3
M37224M3-XXXSP
MITSUBISHI MICROCOMPUTERS
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER
with ON-SCREEN DISPLAY CONTROLLER
21
SERIAL I/O
The M37224M3-XXXSP has a built-in serial I/O which can either trans-
mit or receive 8-bit data serially in the clock synchronous mode.
The serial I/O block diagram is shown in Figure 18. The synchronous
clock I/O pin (S
CLK
), and data I/O pins (S
OUT
, S
IN
) also function as
port P2.
Bit 2 of the serial I/O mode register (address 00DC
16
) selects whether
the synchronous clock is supplied internally or externally (from the
P2
0
/S
CLK
pin). When an internal clock is selected, bits 1 and 0 select
whether f(X
IN
) is divided by 4, 16, 32, or 64. Bit 3 selects whether
port P2 is used for serial I/O or not. To use the P2
2
/S
IN
pin as the S
IN
pin, set the bit 2 of the port P2 direction register (address 00C5
16
) to
“0.”
The operation of the serial I/O is described below. The operation
differs depending on the clock source; external clock or internal
clock.
Fig. 18. Serial I/O Block Diagram
8
Serial I/O shift register (8)
Data bus
Serial I/O interrupt
request
Selection gate :
Connected to black
side at reset.
Synchronous circuit
Frequency
divider
1/4
1/8
1/16
SM1
SM0
Serial I/O counter (8)
SM5: LSB
MSB
S
SM2
1/2
SM6
X
IN
S
IN
S
OUT
S
CLK
1/2
SM3
P2
1
latch
P2
0
latch
SM3
(Address 00DD
16
)
SM : Serial I/O mode register
Note:
When the data is set in the serial I/O register (address 00DD
16
), the register functions as the serial I/O shift register.
(Note)
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
M37224M3-050SP 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER
M37224M3-XXXSP 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER
M37225ECSP 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER
M37225M6 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SNGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER
M37225M8 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SNGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER
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