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參數(shù)資料
| 型號(hào)： | S1C63567F0A0100 |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | MICROCONTROLLER, PQFP144 |
| 封裝： | PLASTIC, QFP-144 |
| 文件頁(yè)數(shù)： | 125/172頁(yè) |
| 文件大?。?/td> | 1349K |
| 代理商： | S1C63567F0A0100 |
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46
EPSON
S1C63567 TECHNICAL MANUAL
CHAPTER 4: PERIPHERAL CIRCUITS AND OPERATION (I/O Ports)
(2) I/O port control
P00–P03: P0 I/O port data register (FF42H)
P10–P13: P1 I/O port data register (FF46H)
P20–P23: P2 I/O port data register (FF4AH)
P30–P33: P3 I/O port data register (FF4EH)
I/O port data can be read and output data can be set through these registers.
When writing data
When "1" is written: High level
When "0" is written: Low level
When an I/O port is set to the output mode, the written data is output unchanged from the I/O port
terminal. When "1" is written as the port data, the port terminal goes high (VDD), and when "0" is written,
the terminal goes low (VSS).
Port data can be written also in the input mode.
When reading data
When "1" is read: High level
When "0" is read: Low level
The terminal voltage level of the I/O port is read out. When the I/O port is in the input mode the voltage
level being input to the port terminal can be read out; in the output mode the register value can be read.
When the terminal voltage is high (VDD) the port data that can be read is "1", and when the terminal
voltage is low (VSS) the data is "0".
When "with pull-up resistor" has been selected with the mask option and the PUL register is set to "1", the
built-in pull-up resister goes ON during input mode, so that the I/O port terminal is pulled up.
The data registers of the port, which are set for the special output (P22, P23) or input/output of the serial
interface (P10–P12 or P10–P13), become general-purpose registers that do not affect the input/output.
Note: When in the input mode, I/O ports are changed from low to high by pull-up resistor, the rise of the
waveform is delayed on account of the time constant of the pull-up resistor and input gate capaci-
tance. Hence, when fetching input ports, set an appropriate wait time.
Particular care needs to be taken of the key scan during key matrix configuration.
Make this waiting time the amount of time or more calculated by the following expression.
10
× C × R
C: terminal capacitance 5 pF + parasitic capacitance ? pF
R: pull-up resistance 330 k
IOC00–IOC03: P0 port I/O control register (FF40H)
IOC10–IOC13: P1 port I/O control register (FF44H)
IOC20–IOC23: P2 port I/O control register (FF48H)
IOC30–IOC33: P3 port I/O control register (FF4CH)
The input and output modes of the I/O ports are set with these registers.
When "1" is written: Output mode
When "0" is written: Input mode
Reading: Valid
The input and output modes of the I/O ports are set in 1-bit unit.
Writing "1" to the I/O control register makes the corresponding I/O port enter the output mode, and
writing "0" induces the input mode.
At initial reset, these registers are all set to "0", so the I/O ports are in the input mode.
The I/O control registers of the port, which are set for the special output (P22, P23) or input/output of
the serial interface (P10–P12 or P10–P13), become general-purpose registers that do not affect the input/
output.
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| S1C63653F | 4-BIT, FLASH, 4 MHz, MICROCONTROLLER, CQFP100 |
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| S1C6N3B0D0A0100 | MICROCONTROLLER, UUC54 |
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| S1C63616 | 制造商:EPSON 制造商全稱:EPSON 功能描述:4-bit Single Chip Microcomputer |
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| S1C63657 | 制造商:EPSON 制造商全稱:EPSON 功能描述:CMOS 4-bit Single Chip Microcontroller |
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