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90S1200 Dataheets PDF



Part Number 90S1200
Manufacturers ATMEL Corporation
Logo ATMEL Corporation
Description 8-Bit Microcontroller with 1K bytes In-System Programmable Flash
Datasheet 90S1200 Datasheet90S1200 Datasheet (PDF)

Features • Utilizes the AVR® RISC Architecture • AVR – High-performance and Low-power RISC Architecture – 89 Powerful Instructions – Most Single Clock Cycle Execution – 32 x 8 General Purpose Working Registers – Up to 12 MIPS Throughput at 12 MHz Data and Non-volatile Program Memory – 1K Byte of In-System Programmable Flash Endurance: 1,000 Write/Erase Cycles – 64 Bytes of In-System Programmable EEPROM Endurance: 100,000 Write/Erase Cycles – Programming Lock for Flash Program and EEPROM Data Sec.

  90S1200   90S1200


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Features • Utilizes the AVR® RISC Architecture • AVR – High-performance and Low-power RISC Architecture – 89 Powerful Instructions – Most Single Clock Cycle Execution – 32 x 8 General Purpose Working Registers – Up to 12 MIPS Throughput at 12 MHz Data and Non-volatile Program Memory – 1K Byte of In-System Programmable Flash Endurance: 1,000 Write/Erase Cycles – 64 Bytes of In-System Programmable EEPROM Endurance: 100,000 Write/Erase Cycles – Programming Lock for Flash Program and EEPROM Data Security Peripheral Features – One 8-bit Timer/Counter with Separate Prescaler – On-chip Analog Comparator – Programmable Watchdog Timer with On-chip Oscillator – SPI Serial Interface for In-System Programming Special Microcontroller Features – Low-power Idle and Power-down Modes – External and Internal Interrupt Sources – Selectable On-chip RC Oscillator for Zero External Components Specifications – Low-power, High-speed CMOS Process Technology – Fully Static Operation Power Consumption at 4 MHz, 3V, 25°C – Active: 2.0 mA – Idle Mode: 0.4 mA – Power-down Mode: <1 µA I/O and Packages – 15 Programmable I/O Lines – 20-pin PDIP, SOIC and SSOP Operating Voltages – 2.7 - 6.0V (AT90S1200-4) – 4.0 - 6.0V (AT90S1200-12) Speed Grades – 0 - 4 MHz, (AT90S1200-4) – 0 - 12 MHz, (AT90S1200-12) • • • • • 8-bit Microcontroller with 1K Byte of In-System Programmable Flash AT90S1200 • • • Pin Configuration Rev. 0838H–AVR–03/02 1 Description The AT90S1200 is a low-power CMOS 8-bit microcontroller based on the AVR RISC architecture. By executing powerful instructions in a single clock cycle, the AT90S1200 achieves throughputs approaching 1 MIPS per MHz allowing the system designer to optimize power consumption versus processing speed. The AVR core combines a rich instruction set with the 32 general purpose working registers. All the 32 registers are directly connected to the Arithmetic Logic Unit (ALU), allowing two independent registers to be accessed in one single instruction executed in one clock cycle. The resulting architecture is more code efficient while achieving throughputs up to ten times faster than conventional CISC microcontrollers. Block Diagram Figure 1. The AT90S1200 Block Diagram The architecture supports high-level languages efficiently as well as extremely dense assembler code programs. The AT90S1200 provides the following features: 1K byte of In-System Programmable Flash, 64 bytes EEPROM, 15 general purpose I/O lines, 32 general purpose working registers, internal and external interrupts, programmable watchdog timer with internal oscillator, an SPI serial port for program downloading and two software selectable power-saving modes. The Idle Mode stops the CPU while allow2 AT90S1200 0838H–AVR–03/02 AT90S1200 ing the Registers, Timer/Counter, Watchdog and Interrupt system to continue functioning. The Power-down mode saves the register contents but freezes the Oscillator, disabling all other chip functions until the next External Interrupt or hardware Reset. The device is manufactured using Atmel’s high-density nonvolatile memory technology. The On-chip In-System Programmable Flash allows the program memory to be reprogrammed in-system through an SPI serial interface or by a conventional nonvolatile memory programmer. By combining an enhanced RISC 8-bit CPU with In-System Programmable Flash on a monolithic chip, the Atmel AT90S1200 is a powerful microcontroller that provides a highly flexible and cost-effective solution to many embedded control applications. The AT90S1200 AVR is supported with a full suite of program and system development tools including: macro assemblers, program debugger/simulators, in-circuit emulators, and evaluation kits. Pin Descriptions VCC GND Port B (PB7..PB0) Supply voltage pin. Ground pin. Port B is an 8-bit bi-directional I/O port. Port pins can provide internal pull-up resistors (selected for each bit). PB0 and PB1 also serve as the positive input (AIN0) and the negative input (AIN1), respectively, of the On-chip Analog Comparator. The Port B output buffers can sink 20 mA and thus drive LED displays directly. When pins PB0 to PB7 are used as inputs and are externally pulled low, they will source current if the internal pull-up resistors are activated. The Port B pins are tri-stated when a reset condition becomes active, even if the clock is not active. Port B also serves the functions of various special features of the AT90S1200 as listed on page 30. Port D (PD6..PD0) Port D has seven bi-directional I/O pins with internal pull-up resistors, PD6..PD0. The Port D output buffers can sink 20 mA. As inputs, Port D pins that are externally pulled low will source current if the pull-up resistors are activated. The Port D pins are tri-stated when a reset condition becomes active, even if the clock is not active. Port D also serves the functions of various special features of the AT90S1200 as listed on page 34. RESET Reset input. A low level on this pin for more than 50 ns will generat.


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