What is PT2258 single chip microcontroller used for? What are the features? Details of PT2258 s MCU

This is an I2C 6-channel electronic volume integrated circuit.

The received signal is the reverse code of the transmitted signal, because the PT2262 sends four encoding times for each time it detects that the key is valid.

Use this feature to decode, first detect whether the information has been received, when there is, remove the first encoded signal to detect the high level of 5ms, to detect the start of the encoded signal to receive the high level of 5ms before starting decoding, the length of each code is.

Each of the left and right encoding starts low, then goes high, goes low, and goes back high. 1 yard can be distinguished from the width of the first high, and the rest of the dangling yard and 0 yard can be distinguished from the width of the second high.

The specific microcontroller decoding method is as follows:

When the falling edge is detected from the high level, there is a delay of 300us, and the state of read and receive is recorded as a0, and then the next falling edge is detected. After lowering the edge, there is a delay of 300us, and the state of reading and receiving is recorded as A1, so that a code is translated.

The relationship between a0 a1 and suspended 1 yard 0 yard is as follows:

a0 a1 **；

0 0 1 yards;

0 1 Error;

1 0 Overhang;

1 1 0 yards.

No, the two chips could have communicated with each other. But you can also use only one of them, and then you can use a single-chip microcomputer to simulate the function of the other piece to achieve wireless communication, I don't know if you understand this explanation.

You're mistaken, pt2262, 2272 is an encoding and decoding chip, not controlled by a single-chip microcomputer. You should be talking about a transceiver module without encoding and decoding chips, right?

PT2262 is the encoding chip and PT2272 is the decoding chip. It is not directly related to the microcontroller. It belongs to the single-chip microcomputer external extension application chip.

The PT2262 2272 can have up to 12 bits (A0-A11) three-state address pins (floating, high, low), any combination can provide 531441 address code, and the PT2262 can have up to 6 digits (D0-D5) data pins, and the set address code and data code are serial output from 17 pins, which can be used for wireless remote control transmission circuits.

PT2262 2272 Features: 1. CMOS process manufacturing, low power consumption 2, fewer external components 3, RC oscillation resistance 4, wide working voltage range: 5, data up to 6 digits 6, address code up to 531441 kinds.

Scope of application: 1. Vehicle anti-theft system 2. Home anti-theft system 3. Remote control toys 4. Remote control of other electrical appliances.

PT2262 and PT2272 are a pair of codec chips, which have nothing to do with MCUs, and of course can also be applied with MCUs. Information on PT2262 and PT2272.

51 microcontroller to control the communication between pt2262 and 2272 method |Steps:

1: If it is a module, it is the same thing as when switching, when you press a button, the level of the corresponding pin becomes higher, not coding;

2: However, when buying a module, you should ask whether the signal from the 2272 module is maintained (that is, the pin corresponding to the A key changes from low to high, and you need to press other keys to make the pin level corresponding to the A key lower), or jog (that is

The pins corresponding to the A key change from low to high to low), it is recommended to choose the latter one, and the opening and breaking of the four electrical appliances can be realized with a single-chip microcomputer.

PT2262 PT2272 is one of the most widely used remote control communication IC chips, which has been used in automotive door control, remote control door lock, access control management, digital communication and other fields. The PT2262 PT22 72 can have up to 12 bits (A0 A5, D0 D5) three-state address pins (floating, high, low), and any combination can provide 531 441 (312) address codes. However, the PT2262 PT 2272 can only control up to 6 channels (D0 D5), which greatly limits the range of its wireless remote control.

If it's a module, it's easy to do, it's the same thing as switching, when you press a key, the level of the corresponding pin becomes higher, not coding. However, when buying a module, you should ask whether the signal from the 2272 module is maintained (that is, the pin corresponding to the A key changes from low to high, and you need to press other keys to make the pin level corresponding to the A key lower) or jog (that is

The pins corresponding to the A key change from low to high to low), I recommend choosing the latter one, because I bought a four-channel one. With a single-chip microcomputer, the opening and breaking of four electrical appliances can be realized respectively. I made a four-channel board that did just that.

If you want to intercept the signal, you can receive the PT2262 switch and decode it. Hehe.