ATMEGA328-PU [MICROCHIP]
IC MCU 8BIT 32KB FLASH 28DIP;
| 型号： | ATMEGA328-PU |
| 厂家： | 
MICROCHIP |
| 描述： | IC MCU 8BIT 32KB FLASH 28DIP 时钟 光电二极管 外围集成电路 |
| 文件： | 总24页 (文件大小：363K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
8-bit AVR Microcontrollers
ATmega328/P
DATASHEET SUMMARY
Introduction
The Atmel® picoPower® ATmega328/P 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 ATmega328/P
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
–
32KBytes of In-System Self-Programmable Flash program
Memory
–
–
–
–
–
1KBytes EEPROM
2KBytes 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-42735B-328/P_Datasheet_Summary-11/2016
•
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 (Philips I2C compatible)
Programmable Watchdog Timer with Separate On-chip Oscillator
One On-chip Analog Comparator
Interrupt and Wake-up on Pin Change
•
•
Special Microcontroller Features
–
–
–
–
Power-on Reset and Programmable Brown-out Detection
Internal Calibrated Oscillator
External and Internal Interrupt Sources
Six Sleep Modes: Idle, ADC Noise Reduction, Power-save, Power-down, Standby, and
Extended Standby
I/O and Packages
–
–
23 Programmable I/O Lines
28-pin PDIP, 32-lead TQFP, 28-pad QFN/MLF and 32-pad QFN/MLF
•
•
•
Operating Voltage:
1.8 - 5.5V
Temperature Range:
-40°C to 105°C
Speed Grade:
–
–
–
–
–
0 - 4MHz @ 1.8 - 5.5V
0 - 10MHz @ 2.7 - 5.5V
0 - 20MHz @ 4.5 - 5.5V
•
Power Consumption at 1MHz, 1.8V, 25°C
–
–
–
Active Mode: 0.2mA
Power-down Mode: 0.1μA
Power-save Mode: 0.75μA (Including 32kHz RTC)
Atmel ATmega328/P [DATASHEET]
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Table of Contents
Introduction......................................................................................................................1
Feature............................................................................................................................ 1
1. Description.................................................................................................................4
2. Configuration Summary.............................................................................................5
3. Ordering Information .................................................................................................6
3.1. ATmega328 ................................................................................................................................. 6
3.2. ATmega328P ...............................................................................................................................7
4. Block Diagram........................................................................................................... 8
5. Pin Configurations..................................................................................................... 9
5.1. Pin-out..........................................................................................................................................9
5.2. Pin Descriptions..........................................................................................................................12
6. I/O Multiplexing........................................................................................................14
7. Resources................................................................................................................16
8. Data Retention.........................................................................................................17
9. About Code Examples.............................................................................................18
10. Capacitive Touch Sensing....................................................................................... 19
10.1. QTouch Library...........................................................................................................................19
11. Packaging Information.............................................................................................20
11.1. 32-pin 32A..................................................................................................................................20
11.2. 32-pin 32M1-A............................................................................................................................21
11.3. 28-pin 28M1................................................................................................................................22
11.4. 28-pin 28P3................................................................................................................................23
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.
The ATmega328/P provides the following features: 32Kbytes of In-System Programmable Flash with
Read-While-Write capabilities, 1Kbytes EEPROM, 2Kbytes SRAM, 23 general purpose I/O lines, 32
general purpose working registers, Real Time Counter (RTC), three flexible Timer/Counters with compare
modes and PWM, 1 serial programmable USARTs , 1 byte-oriented 2-wire Serial Interface (I2C), a 6-
channel 10-bit ADC (8 channels in TQFP and QFN/MLF packages) , a programmable Watchdog Timer
with internal Oscillator, an SPI serial port, and six 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,
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/resonator 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.
®
Atmel offers the QTouch library for embedding capacitive touch buttons, sliders and wheels functionality
into AVR microcontrollers. The patented charge-transfer signal acquisition offers robust sensing and
®
™
includes fully debounced reporting of touch keys and includes Adjacent Key Suppression (AKS )
technology for unambiguous detection of key events. The easy-to-use QTouch Suite toolchain allows you
to explore, develop and debug your own touch applications.
The device is manufactured using Atmel’s high density non-volatile 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 ATmega328/P is a powerful microcontroller that
provides a highly flexible and cost effective solution to many embedded control applications.
The ATmega328/P 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.
Atmel ATmega328/P [DATASHEET]
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2.
Configuration Summary
Features
ATmega328/P
Pin Count
28/32
Flash (Bytes)
32K
SRAM (Bytes)
2K
EEPROM (Bytes)
1K
Interrupt Vector Size (instruction word/vector)
1/1/2
General Purpose I/O Lines
SPI
23
2
TWI (I2C)
1
USART
1
ADC
10-bit 15kSPS
ADC Channels
8-bit Timer/Counters
16-bit Timer/Counters
8
2
1
and support a real Read-While-Write Self-Programming mechanism. There is a separate Boot Loader
Section, and the SPM instruction can only execute from there. In , there is no Read-While-Write support
and no separate Boot Loader Section. The SPM instruction can execute from the entire Flash.
Atmel ATmega328/P [DATASHEET]
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3.
Ordering Information
3.1.
ATmega328
Speed [MHz](3)
Power Supply [V]
Ordering Code(2)
Package(1)
Operational Range
20
1.8 - 5.5
Industrial
(-40°C to 85°C)
ATmega328-AU
32A
32A
ATmega328-AUR(5)
ATmega328-MMH(4)
ATmega328-MMHR(4)(5)
ATmega328-MU
28M1
28M1
32M1-A
32M1-A
28P3
ATmega328-MUR(5)
ATmega328-PU
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. Pb-free packaging, complies to the European Directive for Restriction of Hazardous Substances
(RoHS directive). Also Halide free and fully Green.
3. Please refer to Speed Grades for Speed vs. VCC
4. Tape & Reel.
5. NiPdAu Lead Finish.
Package Type
28M1
28-pad, 4 x 4 x 1.0 body, Lead Pitch 0.45mm Quad Flat No-Lead/Micro Lead Frame Package (QFN/
MLF)
28P3
28-lead, 0.300” Wide, Plastic Dual Inline Package (PDIP)
32M1-A 32-pad, 5 x 5 x 1.0 body, Lead Pitch 0.50mm Quad Flat No-Lead/Micro Lead Frame Package (QFN/
MLF)
32A
32-lead, Thin (1.0mm) Plastic Quad Flat Package (TQFP)
Atmel ATmega328/P [DATASHEET]
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Atmel-42735B-328/P_Datasheet_Summary-11/2016
3.2.
ATmega328P
Speed [MHz](3)
Power Supply [V]
Ordering Code(2)
Package(1)
Operational Range
20
1.8 - 5.5
Industrial
(-40°C to 85°C)
ATmega328P-AU
32A
32A
ATmega328P-AUR(5)
ATmega328P-MMH(4)
ATmega328P-MMHR(4)(5)
ATmega328P-MU
28M1
28M1
32M1-A
32M1-A
28P3
ATmega328P-MUR(5)
ATmega328P-PU
Industrial
(-40°C to 105°C)
ATmega328P-AN
ATmega328P-ANR(5)
ATmega328P-MN
ATmega328P-MNR(5)
ATmega328P-PN
32A
32A
32M1-A
32M1-A
28P3
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. Pb-free packaging, complies to the European Directive for Restriction of Hazardous Substances
(RoHS directive). Also Halide free and fully Green.
3. Please refer to Speed Grades for Speed vs. VCC
4. Tape & Reel.
5. NiPdAu Lead Finish.
Package Type
28M1
28-pad, 4 x 4 x 1.0 body, Lead Pitch 0.45mm Quad Flat No-Lead/Micro Lead Frame Package (QFN/
MLF)
28P3
28-lead, 0.300” Wide, Plastic Dual Inline Package (PDIP)
32M1-A 32-pad, 5 x 5 x 1.0 body, Lead Pitch 0.50mm Quad Flat No-Lead/Micro Lead Frame Package (QFN/
MLF)
32A
32-lead, Thin (1.0mm) Plastic Quad Flat Package (TQFP)
Atmel ATmega328/P [DATASHEET]
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4.
Block Diagram
Figure 4-1.ꢀBlock Diagram
SRAM
debugWire
CPU
OCD
Clock generation
PB[7:0]
PC[6:0]
PD[7:0]
XTAL1 /
TOSC1
I/O
PORTS
8MHz
32.768kHz
Calib RC
NVM
programming
I
N
/
O
U
T
XOSC
FLASH
External
clock
XTAL2 /
TOSC2
16MHz LP
Power
management
and clock
control
128kHz int
XOSC
GPIOR[2:0]
osc
D
A
T
A
B
U
S
EEPROM
T0
OC0A
OC0B
PD4
PD6
PD5
D
A
T
A
B
U
S
TC 0
(8-bit)
MISO0
MOSI0
SCK0
SS0
PB4
PB3
PB5
PB2
VCC
EEPROMIF
SPI 0
AC
Power
Supervision
POR/BOD &
RESET
Watchdog
Timer
RESET
AIN0
AIN1
PD6
PD7
GND
Internal
ADCMUX
ADC6, ADC7
PC[5:0]
Reference
ADC6,ADC7,PC[5:0]
AREF
ADC[7:0]
AREF
ADC
RxD0
TxD0
XCK0
PD0
PD1
PD4
PCINT[23:0]
INT[1:0]
PD[7:0], PC[6:0], PB[7:0]
PD3, PD2
EXTINT
USART 0
TWI 0
PB1, PB2
PD5
OC1A/B
T1
ICP1
TC 1
(16-bit)
PB0
SDA0
SCL0
PC4
PC5
OC2A
OC2B
PB3
PD3
TC 2
(8-bit async)
Atmel ATmega328/P [DATASHEET]
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Atmel-42735B-328/P_Datasheet_Summary-11/2016
5.
Pin Configurations
5.1.
Pin-out
Figure 5-1.ꢀ28-pin PDIP
1
28
27
26
25
24
23
22
21
20
19
18
17
16
15
(PCINT14/RESET) PC6
(PCINT16/RXD) PD0
(PCINT17/TXD) PD1
(PCINT18/INT0) PD2
(PCINT19/OC2B/INT1) PD3
(PCINT20/XCK/T0) PD4
VCC
PC5 (ADC5/SCL/PCINT13)
PC4 (ADC4/SDA/PCINT12)
PC3 (ADC3/PCINT11)
PC2 (ADC2/PCINT10)
PC1 (ADC1/PCINT9)
PC0 (ADC0/PCINT8)
GND
2
3
4
5
6
Power
7
Ground
Programming/debug
Digital
8
GND
AREF
9
(PCINT6/XTAL1/TOSC1) PB6
(PCINT7/XTAL2/TOSC2) PB7
(PCINT21/OC0B/T1) PD5
(PCINT22/OC0A/AIN0) PD6
(PCINT23/AIN1) PD7
(PCINT0/CLKO/ICP1) PB0
AVCC
Analog
10
11
12
13
14
PB5 (SCK/PCINT5)
PB4 (MISO/PCINT4)
PB3 (MOSI/OC2A/PCINT3)
PB2 (SS/OC1B/PCINT2)
PB1 (OC1A/PCINT1)
Crystal/Osc
Atmel ATmega328/P [DATASHEET]
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Atmel-42735B-328/P_Datasheet_Summary-11/2016
Figure 5-2.ꢀ28-pin MLF Top View
Power
Ground
Programming/debug
Digital
Analog
Crystal/CLK
PC2 (ADC2/PCINT10)
PC1 (ADC1/PCINT9)
PC0 (ADC0/PCINT8)
GND
(PCINT19/OC2B/INT1) PD3
(PCINT20/XCK/T0) PD4
VCC
1
2
3
4
5
6
7
21
20
19
18
17
16
15
GND
(PCINT6/XTAL1/TOSC1) PB6
(PCINT7/XTAL2/TOSC2) PB7
(PCINT21/OC0B/T1) PD5
AREF
AVCC
PB5 (SCK/PCINT5)
Bottom pad should be
soldered to ground
Atmel ATmega328/P [DATASHEET]
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Atmel-42735B-328/P_Datasheet_Summary-11/2016
Figure 5-3.ꢀ32-pin TQFP Top View
Power
Ground
Programming/debug
Digital
Analog
Crystal/CLK
(PCINT19/OC2B/INT1) PD3
1
2
3
4
5
6
7
8
24
23
22
21
20
19
18
17
PC1 (ADC1/PCINT9)
PC0 (ADC0/PCINT8)
ADC7
(PCINT20/XCK/T0) PD4
GND
VCC
GND
GND
AREF
VCC
ADC6
AVCC
(PCINT6/XTAL1/TOSC1) PB6
(PCINT7/XTAL2/TOSC2) PB7
PB5 (SCK/PCINT5)
Atmel ATmega328/P [DATASHEET]
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Atmel-42735B-328/P_Datasheet_Summary-11/2016
Figure 5-4.ꢀ32-pin MLF Top View
Power
Ground
Programming/debug
Digital
Analog
Crystal/CLK
PC1 (ADC1/PCINT9)
PC0 (ADC0/PCINT8)
ADC7
(PCINT19/OC2B/INT1) PD3
1
2
3
4
5
6
7
8
24
23
22
21
20
19
18
17
(PCINT20/XCK/T0) PD4
GND
GND
VCC
GND
AREF
ADC6
VCC
AVCC
(PCINT6/XTAL1/TOSC1) PB6
(PCINT7/XTAL2/TOSC2) PB7
PB5 (SCK/PCINT5)
Bottom pad should be
soldered to ground
5.2.
Pin Descriptions
5.2.1.
VCC
Digital supply voltage.
5.2.2.
5.2.3.
GND
Ground.
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. The Port
B pins are tri-stated when a reset condition becomes active, even if the clock is not running.
Depending on the clock selection fuse settings, PB6 can be used as input to the inverting Oscillator
amplifier and input to the internal clock operating circuit.
Atmel ATmega328/P [DATASHEET]
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Atmel-42735B-328/P_Datasheet_Summary-11/2016
Depending on the clock selection fuse settings, PB7 can be used as output from the inverting Oscillator
amplifier.
If the Internal Calibrated RC Oscillator is used as chip clock source, PB[7:6] is used as TOSC[2:1] input
for the Asynchronous Timer/Counter2 if the AS2 bit in ASSR is set.
5.2.4.
5.2.5.
Port C (PC[5:0])
Port C is a 7-bit bi-directional I/O port with internal pull-up resistors (selected for each bit). The PC[5:0]
output buffers have symmetrical drive characteristics with both high sink and source capability. 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 tri-stated when a reset condition becomes active, even if the clock is not running.
PC6/RESET
If the RSTDISBL Fuse is programmed, PC6 is used as an I/O pin. Note that the electrical characteristics
of PC6 differ from those of the other pins of Port C.
If the RSTDISBL Fuse is unprogrammed, PC6 is used as a Reset input. A low level on this pin for longer
than the minimum pulse length will generate a Reset, even if the clock is not running. Shorter pulses are
not guaranteed to generate a Reset.
The various special features of Port C are elaborated in the Alternate Functions of Port C section.
5.2.6.
5.2.7.
Port D (PD[7:0])
Port D is an 8-bit bi-directional I/O port with internal pull-up resistors (selected for each bit). The Port D
output buffers have symmetrical drive characteristics with both high sink and source capability. 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 running.
AVCC
AVCC is the supply voltage pin for the A/D Converter, PC[3:0], and PE[3:2]. 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. Note that PC[6:4] use digital supply voltage, VCC
.
5.2.8.
5.2.9.
AREF
AREF is the analog reference pin for the A/D Converter.
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.
Atmel ATmega328/P [DATASHEET]
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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.ꢀPORT Function Multiplexing
(32-pin
(28-pin
(28-pin
PAD
EXTINT PCINT
ADC/AC OSC
T/C #0 T/C USART 0 I2C 0 SPI 0
#1
MLF/TQFP) MLF) Pin# PIPD) Pin#
Pin#
1
2
4
3
6
5
7
1
2
3
4
-
5
6
7
8
-
PD[3]
PD[4]
VCC
GND
VCC
GND
PB[6]
INT1
PCINT19
OC2B
PCINT20
T0
XCK0
-
-
5
9
PCINT6
PCINT7
XTAL1/
TOSC1
8
6
10
PB[7]
XTAL2/
TOSC2
9
7
11
12
13
14
15
16
17
18
19
20
-
PD[5]
PD[6]
PD[7]
PB[0]
PB[1]
PB[2]
PB[3]
PB[4]
PB[5]
AVCC
ADC6
AREF
GND
PCINT21
PCINT22 AIN0
PCINT23 AIN1
PCINT0
OC0B T1
OC0A
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
8
9
10
11
12
13
14
15
16
-
CLKO
ICP1
PCINT1
OC1A
OC1B
OC2A
PCINT2
SS0
PCINT3
MOSI0
MISO0
SCK0
PCINT4
PCINT5
ADC6
17
18
-
21
22
-
ADC7
PC[0]
PC[1]
PC[2]
PC[3]
PC[4]
PC[5]
ADC7
PCINT8 ADC0
PCINT9 ADC1
PCINT10 ADC2
PCINT11 ADC3
PCINT12 ADC4
PCINT13 ADC5
PCINT14
19
20
21
22
23
24
25
13
24
25
26
27
28
1
SDA0
SCL0
PC[6]/
RESET
Atmel ATmega328/P [DATASHEET]
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Atmel-42735B-328/P_Datasheet_Summary-11/2016
(32-pin
(28-pin
(28-pin
PAD
EXTINT PCINT
ADC/AC OSC
T/C #0 T/C USART 0 I2C 0 SPI 0
#1
MLF/TQFP) MLF) Pin# PIPD) Pin#
Pin#
30
31
32
26
27
28
2
3
4
PD[0]
PD[1]
PD[2]
PCINT16
RXD0
TXD0
PCINT17
PCINT18
INT0
Atmel ATmega328/P [DATASHEET]
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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.
Atmel ATmega328/P [DATASHEET]
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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.
Atmel ATmega328/P [DATASHEET]
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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.
For I/O Registers located in extended I/O map, “IN”, “OUT”, “SBIS”, “SBIC”, “CBI”, and “SBI” instructions
must be replaced with instructions that allow access to extended I/O. Typically “LDS” and “STS”
combined with “SBRS”, “SBRC”, “SBR”, and “CBR”.
Atmel ATmega328/P [DATASHEET]
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10.
Capacitive Touch Sensing
10.1. 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. This is done by using a simple set of APIs to define the touch channels and sensors,
and then calling the touch sensing API’s to retrieve the channel information and determine the touch
sensor states.
The QTouch Library is FREE and downloadable from the Atmel website at the following location: http://
www.atmel.com/technologies/touch/. For implementation details and other information, refer to the Atmel
QTouch Library User Guide - also available for download from the Atmel website.
Atmel ATmega328/P [DATASHEET]
19
Atmel-42735B-328/P_Datasheet_Summary-11/2016
11.
Packaging Information
11.1. 32-pin 32A
PIN 1 IDENTIFIER
PIN 1
B
e
E1
E
D1
D
C
0°~7°
A2
A
A1
L
COMMON DIMENSIONS
(Unit of measure = mm)
MIN
–
MAX
1.20
0.15
1.05
9.25
7.10
9.25
7.10
0.45
0.20
0.75
NOM
NOTE
SYMBOL
A
–
–
A1
A2
D
0.05
0.95
8.75
6.90
8.75
6.90
1.00
9.00
7.00
9.00
7.00
–
D1
E
Note 2
Note 2
Notes:
E1
B
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.
0.30
C
0.09
0.45
–
L
–
e
0.80 TYP
2010-10-20
TITLE
DRAWING NO. REV.
32A,32-lead, 7 x 7mm body size, 1.0mm body thickness,
0.8mm lead pitch, thin profile plastic quad flat package (TQFP)
32A
C
Atmel ATmega328/P [DATASHEET]
20
Atmel-42735B-328/P_Datasheet_Summary-11/2016
11.2. 32-pin 32M1-A
D
D1
1
2
0
Pin 1 ID
3
SIDE VIEW
E1
E
TOP VIEW
A3
A1
A2
A
K
COMMON DIMENSIONS
0.08
C
(Unit of Measure = mm)
P
D2
MIN
0.80
–
MAX
1.00
0.05
1.00
NOM
0.90
0.02
0.65
0.20 REF
0.23
5.00
4.75
3.10
5.00
4.75
3.10
0.50 BSC
0.40
–
NOTE
SYMBOL
A
A1
A2
A3
b
1
2
3
P
–
Pin #1 Notch
(0.20 R)
E2
0.18
4.90
4.70
2.95
4.90
4.70
2.95
0.30
5.10
4.80
3.25
5.10
4.80
3.25
D
K
D1
D2
E
e
b
L
E1
E2
e
BOTTOM VIEW
L
0.30
–
0.50
0.60
P
o
–
–
12
0
Note : JEDEC Standard MO-220, Fig . 2 (Anvil Singulation), VHHD-2 .
K
0.20
–
–
03/14/2014
32M1-A , 32-pad, 5 x 5 x 1.0mm Bod y, Lead Pitch 0.50mm
3.10mm Exposed Pad, Micro Lead Frame Pa ckage (MLF)
,
F
32M1-A
Atmel ATmega328/P [DATASHEET]
21
Atmel-42735B-328/P_Datasheet_Summary-11/2016
11.3. 28-pin 28M1
D
C
1
2
3
Pin 1 ID
E
SIDEVIEW
A1
TOPVIEW
A
y
K
D2
0.45
E2
COMMONDIMENSIONS
(Unit of Measure = mm)
1
2
3
R0.20
MIN
MAX
NOM
NOTE
SYMBOL
0.80 0.90
0.00 0.02
0.17 0.22
1.00
0.05
0.27
A
A1
b
b
0.20 REF
C
3.95 4.00
2.35 2.40
3.95 4.00
2.35 2.40
0.45
4.05
2.45
4.05
2.45
D
D2
E
E2
e
L
e
0.4 Ref
(4x)
BOTTOMVIEW
0.35 0.40 0.45
L
0.00
0.20
–
–
0.08
–
y
K
The ter mi nal #1 ID is a Laser -ma rked Feat ur e .
Note:
10/24/08
GPC
DRAWINGNO.
TITLE
REV.
28M1,28-pad,4x4x1.0mm Body, Lead Pitch 0.45mm,
2.4 x 2.4mm Exposed Pad, Thermally Enhanced
Plastic VeryThin Quad Flat No Lead Package (VQFN)
Package Drawing Contact:
packagedrawings@atmel.com
ZBV
28M1
B
Atmel ATmega328/P [DATASHEET]
22
Atmel-42735B-328/P_Datasheet_Summary-11/2016
11.4. 28-pin 28P3
D
PIN
1
E1
A
SEATING PLANE
A1
B2
(4 PLACES)
L
B
B1
e
E
COMMON DIMENSIONS
(Unit of Measure = mm)
0º ~ 15º REF
C
MIN
–
MAX
4.5724
–
NOM
NOTE
SYMBOL
A
A1
D
–
eB
0.508
34.544
7.620
7.112
0.381
1.143
0.762
3.175
0.203
–
–
–
34.798 Note 1
8.255
E
–
E1
B
–
7.493
0.533
1.397
1.143
3.429
0.356
10.160
Note 1
–
B1
B2
L
–
Note:
1. Dimensions D and E1 do not include mold Flash or Protrusion.
Mold Flash or Protrusion shall not exceed 0.25mm (0.010").
–
–
C
–
eB
e
–
2.540 TYP
09/28/01
DRAWING NO. REV.
28P3
TITLE
2325 Orchard Parkway
San Jose, CA 95131
28P3, 28-lead (0.300"/7.62mm Wide) Plastic Dual
Inline Package (PDIP)
B
Atmel ATmega328/P [DATASHEET]
23
Atmel-42735B-328/P_Datasheet_Summary-11/2016
Atmel Corporation
1600 Technology Drive, San Jose, CA 95110 USA
T: (+1)(408) 441.0311
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©
2016 Atmel Corporation. / Rev.: Atmel-42735B-328/P_Datasheet_Summary-11/2016
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