atmega163l ATMEL Corporation, atmega163l Datasheet - Page 4

• Manufacturer Part Number: atmega163l
• Description: Atmega163 8-bit Avr Microcontroller With 16k Bytes Of In-system Programmable Flash
• Manufacturer: ATMEL Corporation

Pin Descriptions
VCC
GND
Port A (PA7..PA0)
Port B (PB7..PB0)
Port C (PC7..PC0)
4
ATmega163(L)
cycle. The resulting architecture is more code efficient while achieving throughputs up to
ten times faster than conventional CISC microcontrollers.
The ATmega163 provides the following features: 16K bytes of In-System Self-Program-
mable Flash, 512 bytes EEPROM, 1024 bytes SRAM, 32 general purpose I/O lines, 32
general purpose working registers, three flexible Timer/Counters with compare modes,
internal and external interrupts, a byte oriented Two-wire Serial Interface, an 8-channel,
10-bit ADC, a programmable Watchdog Timer with internal Oscillator, a programmable
serial UART, an SPI serial port, and four software selectable power saving modes. The
Idle mode stops the CPU while allowing the SRAM, Timer/Counters, SPI port, and inter-
rupt 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 Oscillator 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 asynchro-
nous timer and ADC, to minimize switching noise during ADC conversions.
The On-chip ISP Flash can be programmed through an SPI serial interface or a conven-
tional programmer. By installing a Self-Programming Boot Loader, the microcontroller
can be updated within the application without any external components. The Boot Pro-
gram can use any interface to download the application program in the Application Flash
memory. By combining an 8-bit CPU with In-System Self-Programmable Flash on a
monolithic chip, the Atmel ATmega163 is a powerful microcontroller that provides a
highly flexible and cost effective solution to many embedded control applications.
The ATmega163 AVR is supported with a full suite of program and system development
tools including: C compilers, macro assemblers, program debugger/simulators, In-Cir-
cuit Emulators, and evaluation kits.
Digital supply voltage.
Digital ground.
Port A serves as the analog inputs to the A/D Converter.
Port A also serves as an 8-bit bi-directional I/O port, if the A/D Converter is not used.
Port pins can provide internal pull-up resistors (selected for each bit). The Port A output
buffers can sink 20mA and can drive LED displays directly. When pins PA0 to PA7 are
used as inputs and are externally pulled low, they will source current if the internal pull-
up resistors are activated. The Port A pins are tristated when a reset condition becomes
active, even if the clock is not running.
Port B is an 8-bit bi-directional I/O port with internal pull-up resistors (selected for each
bit). The Port B output buffers can sink 20 mA. As inputs, Port B pins that are externally
pulled low will source current if the pull-up resistors are activated. Port B also serves the
functions of various special features of the ATmega83/163 as listed on page 117. The
Port B pins are tristated when a reset condition becomes active, even if the clock is not
running.
Port C is an 8-bit bi-directional I/O port with internal pull-up resistors (selected for each
bit). The Port C output buffers can sink 20 mA. As inputs, Port C pins that are externally
pulled low will source current if the pull-up resistors are activated. The Port C pins are
tristated when a reset condition becomes active, even if the clock is not running.
1142E–AVR–02/03