ATmega163.PDF

Features

• High-performance, Low-power AVR ® 8-bit Microcontroller

– 130 Powerful Instructions - Most Single Clock Cycle Execution

– 32 x 8 General Purpose Working Registers

– Fully Static Operation

– Up to 8 MIPS Throughput at 8 MHz

– On-chip 2-cycle Multiplier

• Nonvolatile Program and Data Memories

• Self-programming In-System Programmable Flash Memory

– 16K Bytes with Optional Boot Block (256 - 2K Bytes)

Endurance: 1,000 Write/Erase Cycles

– Boot Section Allows Reprogramming of Program Code without External

Programmer

– Optional Boot Code Section with Independent Lock Bits

– 512 Bytes EEPROM

Endurance: 100,000 Write/Erase Cycles

– 1024 Bytes Internal SRAM

– Programming Lock for Software Security

• Peripheral Features

– Two 8-bit Timer/Counters with Separate Prescaler and Compare Mode

– One 16-bit Timer/Counter with Separate Prescaler, Compare Mode, and Capture

Mode

– Real Time Clock with Separate Oscillator and Counter Mode

– Three PWM Channels

– 8-channel, 10-bit ADC

– Byte-oriented 2-wire Serial Interface

– Programmable Serial UART

– Master/Slave SPI Serial Interface

– Programmable Watchdog Timer with Separate On-chip Oscillator

– Analog Comparator

• Special Microcontroller Features

– Power-on Reset and Programmable Brown-out Detection

– Internal Calibrated RC Oscillator

– External and Internal Interrupt Sources

– Four Sleep Modes: Idle, ADC Noise Reduction, Power Save, and Power-Down

• Power Consumption at 4 MHz, 3.0V, 25 ° C

– Active 5.0 mA

– Idle Mode 1.9 mA

– Power-down Mode < 1 µA

• I/O and Packages

– 32 Programmable I/O Lines

– 40-pin PDIP and 44-pin TQFP

• Operating Voltages

– 2.7 - 5.5V (ATmega163L)

– 4.0 - 5.5V (ATmega163)

• Speed Grades

– 0 - 4 MHz (ATmega163L)

– 0 - 8 MHz (ATmega163)

8-bit

Microcontroller

with 16K Bytes

In-System

Programmable

Flash

ATmega163

ATmega163L

Advance

Information

Rev. 1142B–11/00

Pin Configurations

(SDA)

(SCL)

ATmega163(L)

ATmega163(L)

Description

The ATmega163 is a low-power CMOS 8-bit microcontroller based on the AVR architecture. By executing powerful instruc-

tions in a single clock cycle, the ATmega163 achieves throughputs approaching 1 MIPS per MHz allowing the system

designer to optimize power consumption versus processing speed.

Block Diagram

Figure 1. Block Diagram

PA0 - PA7

PC0 - PC7

VCC

PORTA DRIVERS

PORTC DRIVERS

GND

DATA REGISTER

PORTA

DATA DIR.

REG. PORTA

DATA REGISTER

PORTC

DATA DIR.

REG. PORTC

8-BIT DATA BUS

AVCC

ANALOG MUX

ADC

OSCILLATOR

AGND

AREF

2-WIRE SERIAL

INTERFACE

XTAL1

INTERNAL

REFERENCE

INTERNAL

OSCILLATOR

XTAL2

PROGRAM

COUNTER

STACK

POINTER

WATCHDOG

TIMER

TIMING AND

CONTROL

RESET

PROGRAM

FLASH

MCU CONTROL

SRAM

INSTRUCTION

GENERAL

PURPOSE

REGISTERS

TIMER/

COUNTERS

INTERRUPT

UNIT

INSTRUCTION

DECODER

CONTROL

LINES

EEPROM

ALU

INTERNAL

CALIBRATED

OSCILLATOR

STATUS

PROGRAMMING

LOGIC

SPI

UART

DATA REGISTER

PORTB

DATA DIR.

REG. PORTB

DATA REGISTER

PORTD

DATA DIR.

REG. PORTD

PORTB DRIVERS

PORTD DRIVERS

PB0 - PB7

PD0 - PD7

The AVR core combines a rich instruction set with 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.

The ATmega163 provides the following features: 16K bytes of In-System Self-Programmable 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 2-wire Serial Interface, an 8-channel, 10-bit ADC, a pro-

grammable 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

interrupt system to continue functioning. The Power-down mode saves the register contents but freezes the oscillator, dis-

abling 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 asynchronous 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 conventional programmer. By installing a

self-programming boot loader, the microcontroller can be updated within the application without any external components.

The boot program can use any interface to download the application program in the Application Flash memory. By combin-

ing 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-circuit emulators, and evaluation kits.

Pin Descriptions

VCC

Digital supply voltage

GND

Digital ground

Port A (PA7..PA0)

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 acti-

vated. The Port A pins are tristated when a reset condition becomes active, even if the clock is not running.

Port B (PB7..PB0)

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 100. The Port B pins are

tristated when a reset condition becomes active, even if the clock is not running.

Port C (PC7..PC0)

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.

Port C also serves the functions of various special features of the ATmega163 as listed on page 107.

ATmega163(L)

ATmega163(L)

Port D (PD7..PD0)

Port D is an 8-bit bidirectional I/O port with internal pull-up resistors (selected for each bit). 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. Port

D also serves the functions of various special features of the ATmega163 as listed on page 110. The Port D pins are

tristated when a reset condition becomes active, even if the clock is not running.

RESET

Reset input. A low level on this pin for more than 500 ns will generate a reset, even if the clock is not running. Shorter

pulses are not guaranteed to generate a reset.

XTAL1

Input to the inverting oscillator amplifier and input to the internal clock operating circuit.

XTAL2

Output from the inverting oscillator amplifier.

AVCC

This is the supply voltage pin for Port A and the A/D Converter. It should be externally connected to VCC, even if the ADC

is not used. If the ADC is used, it should be connected to VCC through a low-pass filter. See page 90 for details on opera-

tion of the ADC.

AREF

This is the analog reference input pin for the A/D Converter. For ADC operations, a voltage in the range 2.5V to AV CC can

be applied to this pin.

AGND

Analog ground. If the board has a separate analog ground plane, this pin should be connected to this ground plane. Other-

wise, connect to GND.

Clock Options

The device has the following clock source options, selectable by Flash fuse bits as shown:

Table 1. Device Clocking Options Select

Device Clocking Option

CKSEL3..0

External Crystal/Ceramic Resonator

1111 - 1010

External Low-frequency Crystal

1001 - 1000

External RC Oscillator

0111 - 0101

Internal RC Oscillator

0100 - 0010

External Clock

0001 - 0000

Note:

“1” means unprogrammed, “0” means programmed.

The various choices for each clocking option give different start-up times as shown in Table 5 on page 22.

Internal RC Oscillator

The internal RC oscillator option is an on-chip oscillator running at a fixed frequency of nominally 1 MHz. If selected, the

device can operate with no external components. The device is shipped with this option selected. See “EEPROM

Read/Write Access” on page 53 for information on calibrating this oscillator.

Plik z chomika:

Inne pliki z tego folderu:

Inne foldery tego chomika: