MA803 Datasheet – Single-Chip Microprocessor – Megawin

Part Number : MA803, MA803AE2, MA803AS2

Function : Single-Chip Microprocessor

Package : DIP 28 Pin Type

Manufactures : Megawin Technology

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MA803 Chip Microprocessor Megawin

Description

MA803 is a 80C51-based high-performance 1-T structure of single-chip microprocessors, each instruction requires 1 to 7 clock signals (8051 than the standard fast 6 to 7 times), compatible with the 8051 instruction set. So in the standard 8051 has the same processing capacity of the case, MA803 only need very low operating speed, and thus can greatly reduce the power consumption.

The MA803 has 15.5K bytes of built-in flash memory for code and data. Flash memory can be programmed in-system (ISP). At the same time, it also provides in-application programming (IAP) capabilities. ISP allows users to download new code without removing the microcontroller from the product; IAP means that the microcontroller can write non-volatile data in Flash while the application is running. These functions are programmed by the built-in charge pump to provide high voltage.

MA803 retains the basic features of the standard 80C52: 512 bytes of random access memory, 23 I / O ports, two external interrupts, and two timer / counters.
A PCA timer, an SPI interface, a one-time-enabled watchdog WDT, a 10-bit ADC, a low-level reconnaissance LVD, an enhanced multiprocessor communication and improved speed universal string Line port (EUART).

The MA803 has two power-saving modes to reduce power consumption.
In Idle mode, the CPU is frozen and the peripheral module and interrupt system remain active. In Power-down mode, the contents of RAM and Special Function Registers (SFRs) are saved and all other functions are terminated. Most importantly, the microcontroller in power-down mode can be woken up by an external interrupt.

Pinout

MA803 datasheet pinout

Features

1. 1-T 80C51 central processing unit
2. The MA803 has 15.5K bytes of Flash ROM
(1) 13.5KB for the AP code program space
(2) 1KB for the IAP data Flash space
(3) Flash memory access to provide code protection
3. On-chip 512-byte data RAM
4. Two 16-bit Timer / Event Counters: Timer 0, Timer 1,
5. 7 interrupt sources, four priority interrupt capability
6. Enhanced UART, support frame error detection hardware address recognition
7. 15-bit watchdog timer Watch-Dog-Timer. 8-bit divide by CPU or power-up one-time enable
8. SPI Interface (Master / Slave Mode)
9. A PCA (Programmable Counter Array)
(1) Capture mode
(2) 16-bit software timer mode
(3) high-speed output mode
(4) PWM (Pulse Width Modulator) mode
10. 8-channel 10-bit ADC,

 

MA803 Datasheet

 



LP802B Datasheet – Remote Control Code IC – LAND-HOP

Part Number : LP802B

Function : Remote Control Code IC, Encoder, Decoder

Package : DIP 18 Pin Type

Manufactures : LAND-HOP

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LP802B Remote Control Code IC

 

Description

LP802B, LP801B is used in conjunction with a remote decoding dedicated ASIC. Manufactured in CMOS technology, up to 12-bit triple-state address pins provide up to 531441 (or 312) address codes, thereby greatly reducing code collisions and the possibility of illegally scanning the codes for matching.

 

Pinout

LP802B datasheet pinout

Features

1. LP801B and LP802B are used to match the remote control code IC
2. Applicable to RF (radio frequency) and IR (infrared) two kinds of modulation
3. Up to 6-bit data pins or 12-bit tri-state address pins, providing a total of 531441 (312) address codes
4. Latch type (L) and transient type (M) output

 

Applications

1. Car safety system, garage control
2. Digital remote control doorbell, remote control toys, remote control fan
3. Industrial control and home security, automatic control and other fields

 

LP802B Datasheet