Microcontroller
type AT89S51 an MCS-51 microcontroller family with the exact same
configuration with AT89C51 is quite well known, only AT89S51 features
the ISP (In-System Programmable Flash Memory). This
feature allows the microcontroller can be programmed directly into an
electronic system without going through the Programmer Board or Board
Downloader. The microcontroller can be programmed directly via ISP cable that is connected to the parallel port on a Personal Computer. As for the features of the microcontroller AT89S51 is as follows:
1. A CPU (Central Processing Unit) 8 bits including MCS51 family.2. The internal oscillator and timer circuit, 128 bytes of internal RAM (on-chip).3. Four Programmable I / O ports, each consisting of eight channels of I / O4. Two Timer Counter 16 bits.5. Five interrupt lines (2 external interrupt and internal interrupt 3)6. A serial port with full duplex UART serial control.7. The ability to carry out the operation of multiplication, division and Boolean operations (bit)8. Speed instruction execution per cycle 1 microdetik at a clock frequency of 12 MHz9. 4 Kbytes of Flash ROM which can be filled and removed up to 1000 times10. In-System Programmable Flash MemoryWith the above feature, making the tool use AT89S51 to be more simple and does not require a lot of IC supporters. So the AT89S51 microcontroller has a privilege in terms of hardware.
1. A CPU (Central Processing Unit) 8 bits including MCS51 family.2. The internal oscillator and timer circuit, 128 bytes of internal RAM (on-chip).3. Four Programmable I / O ports, each consisting of eight channels of I / O4. Two Timer Counter 16 bits.5. Five interrupt lines (2 external interrupt and internal interrupt 3)6. A serial port with full duplex UART serial control.7. The ability to carry out the operation of multiplication, division and Boolean operations (bit)8. Speed instruction execution per cycle 1 microdetik at a clock frequency of 12 MHz9. 4 Kbytes of Flash ROM which can be filled and removed up to 1000 times10. In-System Programmable Flash MemoryWith the above feature, making the tool use AT89S51 to be more simple and does not require a lot of IC supporters. So the AT89S51 microcontroller has a privilege in terms of hardware.
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