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ATMEGA164A-CU Datasheet(PDF) 6 Page - ATMEL Corporation |
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ATMEGA164A-CU Datasheet(HTML) 6 Page - ATMEL Corporation |
6 / 32 page 6 8272AS–AVR–01/10 164A/164PA/324A/324PA/644A/644PA/1284/1284P 16/32/64/128K bytes of In-System Programmable Flash with Read-While-Write capabilities, 512B/1K/2K/4K bytes EEPROM, 1/2/4/16K/ bytes SRAM, 32 general purpose I/O lines, 32 gen- eral purpose working registers, Real Time Counter (RTC), three flexible Timer/Counters with compare modes and PWM, 2 USARTs, a byte oriented 2-wire Serial Interface, a 8-channel, 10- bit ADC with optional differential input stage with programmable gain, programmable Watchdog Timer with Internal Oscillator, an SPI serial port, IEEE std. 1149.1 compliant JTAG test interface, also used for accessing the On-chip Debug system and programming and six software select- able power saving modes. The Idle mode stops the CPU while allowing the SRAM, Timer/Counters, SPI port, 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 interrupt or Hardware Reset. In Power-save mode, the asynchronous timer continues to run, allowing the user to maintain a timer base while the rest of the device is sleeping. The ADC Noise Reduction mode stops the CPU and all I/O modules except Asynchronous Timer and ADC, to minimize switching noise during ADC conversions. In Standby mode, the Crystal/Reso- nator Oscillator is running while the rest of the device is sleeping. This allows very fast start-up combined with low power consumption. In Extended Standby mode, both the main Oscillator and the Asynchronous Timer continue to run. The device is manufactured using Atmel’s high-density nonvolatile memory technology. The On- chip ISP Flash allows the program memory to be reprogrammed in-system through an SPI serial interface, by a conventional nonvolatile memory programmer, or by an On-chip Boot program running on the AVR core. The boot program can use any interface to download the application program in the application Flash memory. Software in the Boot Flash section will continue to run while the Application Flash section is updated, providing true Read-While-Write operation. By combining an 8-bit RISC CPU with In-System Self-Programmable Flash on a monolithic chip, the Atmel ATmega164A/164PA/324A/324PA/644A/644PA/1284/1284P is a powerful microcon- troller that provides a highly flexible and cost effective solution to many embedded control applications. The ATmega164A/164PA/324A/324PA/644A/644PA/1284/1284P AVR is supported with a full suite of program and system development tools including: C compilers, macro assemblers, pro- gram debugger/simulators, in-circuit emulators, and evaluation kits. 2.2 Comparison Between ATmega164A, ATmega164PA, ATmega324A, ATmega324PA, ATmega644A, ATmega644PA, ATmega1284 and ATmega1284P Table 2-1. Differences between ATmega164A, ATmega164PA, ATmega324A, ATmega324PA, ATmega644A, ATmega644PA, ATmega1284 and ATmega1284P Device Flash EEPROM RAM Units ATmega164A 16 K 512 1 K bytes ATmega164PA 16 K 512 1 K ATmega324A 32 K 1 K 2 K ATmega324PA 32 K 1 K 2 K ATmega644A 64 K 2 K 4 K ATmega644PA 64 K 2 K 4 K ATmega1284 128 K 4 K 16 K ATmega1284P 128 K 4 K 16 K |
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