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8-bit AVR Microcontrollers

ATmega48A/88A/168A

DATASHEET SUMMARY

Introduction

The Atmel

ATmega48A/88A/168A is a low-power CMOS 8-bit

microcontroller based on the AVR

enhanced RISC architecture. By

executing powerful instructions in a single clock cycle, the ATmega48A/88A/

168A achieves throughputs close to 1MIPS per MHz. This empowers system

designer to optimize the device for power consumption versus processing

speed.

Feature

High Performance, Low Power Atmel

AVR

8-Bit Microcontroller Family

• Advanced RISC Architecture

– 131 Powerful Instructions

– Most Single Clock Cycle Execution

– 32 x 8 General Purpose Working Registers

– Fully Static Operation

– Up to 20 MIPS Throughput at 20MHz

– On-chip 2-cycle Multiplier

• High Endurance Non-volatile Memory Segments

– 4K/8K/16KBytes of In-System Self-Programmable Flash program

Memory

– 256/512/512Bytes EEPROM

– 512/1K/1KBytes Internal SRAM

– Write/Erase Cycles: 10,000 Flash/100,000 EEPROM

– Data Retention: 20 years at 85°C/100 years at 25°C

(1)

– Optional Boot Code Section with Independent Lock Bits

• In-System Programming by On-chip Boot Program

• True Read-While-Write Operation

– Programming Lock for Software Security

• Atmel

QTouch

Library Support

– Capacitive Touch Buttons, Sliders and Wheels

– QTouch and QMatrix

Acquisition

– Up to 64 sense channels

Atmel-42733B-ATmega48A/88A/168A_Datasheet_Summary-11/2016

Summary of content (27 pages)

PAGE 1
8-bit AVR Microcontrollers ATmega48A/88A/168A DATASHEET SUMMARY Introduction ® The Atmel ATmega48A/88A/168A is a low-power CMOS 8-bit microcontroller based on the AVR® enhanced RISC architecture. By executing powerful instructions in a single clock cycle, the ATmega48A/88A/ 168A achieves throughputs close to 1MIPS per MHz. This empowers system designer to optimize the device for power consumption versus processing speed.
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• • • • • • • 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 Counter with Separate Oscillator – Six PWM Channels – 8-channel 10-bit ADC in TQFP and QFN/MLF package • Temperature Measurement – 6-channel 10-bit ADC in PDIP Package • Temperature Measurement – Two Master/Slave SPI Serial Interface – One Programmable Serial USART – One Byte-oriented 2-wire Serial Interface
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Table of Contents Introduction......................................................................................................................1 Feature............................................................................................................................ 1 1. Description.................................................................................................................4 2. Configuration Summary...........................................................................
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1. Description The Atmel 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 a 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.
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2. Configuration Summary Features ATmega48A/88A/168A Pin Count 28/32 Flash (Bytes) 4K/8K/16K SRAM (Bytes) 512/1K/1K EEPROM (Bytes) 256/512/512 Interrupt Vector Size (instruction word/vector) 1/1/2 General Purpose I/O Lines 23 SPI 2 TWI (I2C) 1 USART 1 ADC 10-bit 15kSPS ADC Channels 8 8-bit Timer/Counters 2 16-bit Timer/Counters 1 ATmega88A and ATmega168A support a real Read-While-Write Self-Programming mechanism.
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3. Ordering Information 3.1. ATmega48A Speed [MHz](3) Power Supply [V] Ordering Code(2) Package(1) Operational Range 20 1.8 - 5.5 ATmega48A-AU ATmega48A-AUR(4) ATmega48A-CCU ATmega48A-CCUR(4) ATmega48A-MMH(5) ATmega48A-MMHR(4)(5) ATmega48A-MU ATmega48A-MUR(4) ATmega48A-PU 32A 32A 32CC1 32CC1 28M1 28M1 32M1-A 32M1-A 28P3 Industrial (-40°C to 85°C) Note: 1. This device can also be supplied in wafer form.
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3.2. ATmega88A Speed [MHz](3) Power Supply [V] Ordering Code(2) Package(1) Operational Range 20 1.8 - 5.5 ATmega88A-AU ATmega88A-AUR(4) ATmega88A-CCU ATmega88A-CCUR(4) ATmega88A-MMH(5) ATmega88A-MMHR(4)(5) ATmega88A-MU ATmega88A-MUR(4) ATmega88A-PU 32A 32A 32CC1 32CC1 28M1 28M1 32M1-A 32M1-A 28P3 Industrial (-40°C to 85°C) Note: 1. This device can also be supplied in wafer form. Please contact your local Atmel sales office for detailed ordering information and minimum quantities. 2.
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3.3. ATmega168A Speed [MHz](3) Power Supply [V] Ordering Code(2) Package(1) Operational Range 20 1.8 - 5.5 ATmega168A-AU ATmega168A-AUR(5) ATmega168A-CCU ATmega168A-CCUR(5) ATmega168A-MMH(4) ATmega168A-MMHR(4)(5) ATmega168A-MU ATmega168A-MUR(5) ATmega168A-PU 32A 32A 32CC1 32CC1 28M1 28M1 32M1-A 32M1-A 28P3 Industrial (-40°C to 85°C) Note: 1. This device can also be supplied in wafer form. Please contact your local Atmel sales office for detailed ordering information and minimum quantities. 2.
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4. Block Diagram Figure 4-1. Block Diagram SRAM debugWire CPU OCD Clock generation XTAL1 / TOSC1 XTAL2 / TOSC2 32.
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5. Pin Configurations 5.1. Pin-out Figure 5-1.
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PD2 (INT0/PCINT18) PD1 (TXD/PCINT17) PD0 (RXD/PCINT16) PC6 (RESET/PCINT14) PC5 (ADC5/SCL/PCINT13) PC4 (ADC4/SDA/PCINT12) PC3 (ADC3/PCINT11) 28 27 26 25 24 23 22 Figure 5-2.
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PC6 (RESET/PCINT14) PC5 (ADC5/SCL/PCINT13) PC4 (ADC4/SDA/PCINT12) 29 28 27 Digital Analog Crystal/CLK PC2 (ADC2/PCINT10) PD0 (RXD/PCINT16) 30 Programming/debug 25 PD1 (TXD/PCINT17) 31 Ground 26 PD2 (INT0/PCINT18) 32 Power PC3 (ADC3/PCINT11) Figure 5-3.
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PD2 (INT0/PCINT18) PD1 (TXD/PCINT17) PD0 (RXD/PCINT16) PC6 (RESET/PCINT14) PC5 (ADC5/SCL/PCINT13) PC4 (ADC4/SDA/PCINT12) PC3 (ADC3/PCINT11) PC2 (ADC2/PCINT10) 32 31 30 29 28 27 26 25 Figure 5-4.
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5.2. Pin Descriptions 5.2.1. VCC Digital supply voltage. 5.2.2. GND Ground. 5.2.3. Port B (PB[7:0]) XTAL1/XTAL2/TOSC1/TOSC2 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 have symmetrical drive characteristics with both high sink and source capability. As inputs, Port B pins that are externally pulled low will source current if the pull-up resistors are activated.
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5.2.9. ADC[7:6] (TQFP and VFQFN Package Only) In the TQFP and VFQFN package, ADC[7:6] serve as analog inputs to the A/D converter. These pins are powered from the analog supply and serve as 10-bit ADC channels.
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6. I/O Multiplexing Each pin is by default controlled by the PORT as a general purpose I/O and alternatively it can be assigned to one of the peripheral functions. The following table describes the peripheral signals multiplexed to the PORT I/O pins. Table 6-1.
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(32-pin 32UFBGA) Pin# (32-pin MLF/ TQFP) Pin# (28-pin MLF) Pin# (28-pin PIPD) Pin# PAD EXTINT PCINT A3 29 25 1 PC[6]/ RESET PCINT14 B3 30 26 2 PD[0] PCINT16 RXD0 A2 31 27 3 PD[1] PCINT17 TXD0 A1 32 28 4 PD[2] INT0 ADC/A C OSC T/C #0 T/C USART #1 0 I2C 0 SPI 0 PCINT18 Atmel ATmega48A/88A/168A [DATASHEET] Atmel-42733B-ATmega48A/88A/168A_Datasheet_Summary-11/2016 17
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7. Resources A comprehensive set of development tools, application notes, and datasheets are available for download on http://www.atmel.com/avr.
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8. Data Retention Reliability Qualification results show that the projected data retention failure rate is much less than 1 PPM over 20 years at 85°C.
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9. About Code Examples This documentation contains simple code examples that briefly show how to use various parts of the device. These code examples assume that the part specific header file is included before compilation. Be aware that not all C compiler vendors include bit definitions in the header files and interrupt handling in C is compiler dependent. Confirm with the C compiler documentation for more details.
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10. 10.1. Capacitive Touch Sensing QTouch Library ® ® The Atmel QTouch Library provides a simple to use solution to realize touch sensitive interfaces on ® most Atmel AVR microcontrollers. The QTouch Library includes support for the Atmel QTouch and Atmel ® QMatrix acquisition methods. Touch sensing can be added to any application by linking the appropriate Atmel QTouch Library for the AVR Microcontroller.
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11. Packaging Information 11.1. 32-pin 32A PIN 1 IDENTIFIER PIN 1 e B E1 E D1 D C 0°~7° L A1 A2 A COMMON DIMENSIONS (Unit of measure = mm) Notes: 1. This package conforms to JEDEC reference MS-026, Variation ABA. 2. Dimensions D1 and E1 do not include mold protrusion. Allowable protrusion is 0.25mm per side. Dimensions D1 and E1 are maximum plastic body size dimensions including mold mismatch. 3. Lead coplanarity is 0.10mm maximum. SYMBOL MIN NOM MAX A – – 1.20 A1 0.05 – 0.
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11.2. 32-pin 32M1-A D D1 1 2 3 0 Pin 1 ID E1 SIDE VIEW E TOP VIEW A2 A3 A1 A K 0.08 C P D2 1 2 3 Pin #1 Notch (0.20 R) NOM MAX 0.80 0.90 1.00 A1 – 0.02 0.05 A2 – 0.65 1.00 A3 E2 K b MIN A SYMBOL P e COMMON DIMENSIONS (Unit of Measure = mm) L BOTTOM VIEW 0.20 REF b 0.18 0.23 0.30 D 4.90 5.00 5.10 D1 4.70 4.75 4.80 D2 2.95 3.10 3.25 E 4.90 5.00 5.10 E1 4.70 4.75 4.80 E2 2.95 3.10 3.25 e Note : JEDEC Standard MO-220, Fig .
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11.3. 32-pin 32CC1 1 2 3 4 5 6 0.08 A B Pin#1 ID C D SIDEVIEW D E b1 F A1 E A A2 TOP VIEW E1 e 1 2 3 4 5 32-Øb 6 F D1 COMMON DIMENSIONS (Unit of Measure = mm) E D SYMBOL MIN A A1 A2 b b1 D D1 E E1 e – 0.12 C B A A1 BALL CORNER e BOTTOM VIEW Note1: Dimension “b” is measured at the maximum ball dia. in a plane parallel to the seating plane. NOM MAX – 0.60 – – 0.38 REF 0.25 0.30 0.35 0.25 – – 3.90 4.00 4.10 2.50 BSC 3.90 4.00 4.10 2.50 BSC 0.
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11.4. 28-pin 28M1 D C 1 2 Pin 1 ID 3 E SIDEVIEW A1 TOP VIEW A K y D2 1 0.45 2 R 0.20 3 E2 b L e 0.4 Ref (4x) BOTTOM VIEW Note: The ter mi na l #1 ID is a Laser -ma r ked Feat ur e . COMMON DIMENSIONS (Unit of Measure = mm) SYMBOL MIN A A1 b C D D2 E E2 e L y K 0.80 0.00 0.17 3.95 2.35 3.95 2.35 0.35 0.00 0.20 NOM MAX NOTE 0.90 1.00 0.02 0.05 0.22 0.27 0.20 REF 4.00 4.05 2.40 2.45 4.00 4.05 2.40 2.45 0.45 0.40 0.45 – 0.
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11.5. 28-pin 28P3 D PIN 1 E1 A SEATING PLANE L B2 B1 A1 B (4 PLACES) 0º ~ 15º REF e E C COMMON DIMENSIONS (Unit of Measure = mm) SYMBOL eB Note: 1. Dimensions D and E1 do not include mold Flash or Protrusion. Mold Flash or Protrusion shall not exceed 0.25mm (0.010"). MIN NOM MAX A – – 4.5724 A1 0.508 – – D 34.544 – 34.798 E 7.620 – 8.255 E1 7.112 – 7.493 B 0.381 – 0.533 B1 1.143 – 1.397 B2 0.762 – 1.143 L 3.175 – 3.429 C 0.203 – 0.
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