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Now downloading free:ATMEL 89C4051

ATMEL 89C4051 free download

Electronic circuits, electronic components datasheets and schematics

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File name:89c4051.pdf
[preview 89C4051]
Size:265 kB
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Mfg:ATMEL
Model:89C4051 🔎
Original:89C4051 🔎
Descr:8-Bit Microcontoller with 4K Bytes flash
Group:Electronics > Components > Integrated circuits
Uploaded:09-03-2004
User:plamensl
Multipart:No multipart

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File name 89c4051.pdf

Features · Compatible with MCS-51TM Products · 4K Bytes of Reprogrammable Flash Memory · · · · · · · · · · · · ­ Endurance: 1,000 Write/Erase Cycles 3.0V to 6V Operating Range Fully Static Operation: 0 Hz to 24 MHz Two-Level Program Memory Lock 128 x 8-Bit Internal RAM 15 Programmable I/O Lines Two 16-Bit Timer/Counters Six Interrupt Sources Programmable Serial UART Channel Direct LED Drive Outputs On-Chip Analog Comparator Low Power Idle and Power Down Modes Brown-Out Detection 8-Bit Microcontroller with 4K Bytes Flash AT89C4051 Preliminary Description The AT89C4051 is a low-voltage, high-performance CMOS 8-bit microcomputer with 4K Bytes of Flash programmable and erasable read only memory (PEROM). The device is manufactured using Atmel's high density nonvolatile memory technology and is compatible with the industry standard MCS-51TM instruction set. By combining a versatile 8-bit CPU with Flash on a monolithic chip, the Atmel AT89C4051 is a powerful microcomputer which provides a highly flexible and cost effective solution to many embedded control applications. The AT89C4051 provides the following standard features: 4K Bytes of Flash, 128 bytes of RAM, 15 I/O lines, two 16-bit timer/counters, a five vector two-level interrupt architecture, a full duplex serial port, a precision analog comparator, on-chip oscillator and clock circuitry. In addition, the AT89C4051 is designed with static logic for operation down to zero frequency and supports two software-selectable power saving modes. The Idle Mode stops the CPU while allowing the RAM, timer/counters, serial port and interrupt system to continue functioning. The Power Down Mode saves the RAM contents but freezes the oscillator disabling all other chip functions until the next hardware reset. Pin Configuration PDIP/SOIC /VPP Rev. 1001A­02/98 1 Block Diagram 2 AT89C4051 AT89C4051 Pin Description VCC Supply voltage. GND Ground. Port 1 Port 1 is an 8-bit bidirectional I/O port. Port pins P1.2 to P1.7 provide internal pullups. P1.0 and P1.1 require external pullups. P1.0 and P1.1 also serve as the positive input (AIN0) and the negative input (AIN1), respectively, of the on-chip precision analog comparator. The Port 1 output buffers can sink 20 mA and can drive LED displays directly. When 1s are written to Port 1 pins, they can be used as inputs. When pins P1.2 to P1.7 are used as inputs and are externally pulled low, they will source current (IIL) because of the internal pullups. Port 1 also receives code data during Flash programming and verification. Port 3 Port 3 pins P3.0 to P3.5, P3.7 are seven bidirectional I/O pins with internal pullups. P3.6 is hard-wired as an input to the output of the on-chip comparator and is not accessible as a general purpose I/O pin. The Port 3 output buffers can sink 20 mA. When 1s are written to Port 3 pins they are pulled high by the internal pullups and can be used as inputs. As inputs, Port 3 pins that are externally being pulled low will source current (

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