ATMEGA48-20AU Atmel, ATMEGA48-20AU Datasheet - Page 305
![IC AVR MCU 4K 20MHZ 5V 32TQFP](/photos/6/91/69154/313-32-tqfp_sml.jpg)
ATMEGA48-20AU
Manufacturer Part Number
ATMEGA48-20AU
Description
IC AVR MCU 4K 20MHZ 5V 32TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA48-20AU
Core Processor
AVR
Core Size
8-Bit
Speed
20MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
23
Program Memory Size
4KB (2K x 16)
Program Memory Type
FLASH
Eeprom Size
256 x 8
Ram Size
512 x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
32-TQFP, 32-VQFP
Processor Series
ATMEGA48x
Core
AVR8
Data Bus Width
8 bit
Data Ram Size
512 B
Interface Type
2-Wire/SPI/USART/Serial
Maximum Clock Frequency
20 MHz
Number Of Programmable I/os
23
Number Of Timers
3
Operating Supply Voltage
2.7 V to 5.5 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
EWAVR, EWAVR-BL
Development Tools By Supplier
ATAVRDRAGON, ATSTK500, ATSTK600, ATAVRISP2, ATAVRONEKIT
Minimum Operating Temperature
- 40 C
On-chip Adc
8-ch x 10-bit
Cpu Family
ATmega
Device Core
AVR
Device Core Size
8b
Frequency (max)
20MHz
Total Internal Ram Size
512Byte
# I/os (max)
23
Number Of Timers - General Purpose
3
Operating Supply Voltage (typ)
3.3/5V
Operating Supply Voltage (max)
5.5V
Operating Supply Voltage (min)
2.7V
Instruction Set Architecture
RISC
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
32
Package Type
TQFP
For Use With
ATSTK600-TQFP32 - STK600 SOCKET/ADAPTER 32-TQFPATSTK600-DIP40 - STK600 SOCKET/ADAPTER 40-PDIP770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAG770-1005 - ISP 4PORT FOR ATMEL AVR MCU JTAG770-1004 - ISP 4PORT FOR ATMEL AVR MCU SPIATAVRDRAGON - KIT DRAGON 32KB FLASH MEM AVRATAVRISP2 - PROGRAMMER AVR IN SYSTEMATJTAGICE2 - AVR ON-CHIP D-BUG SYSTEM
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATMEGA48-20AU
Manufacturer:
ATMEL
Quantity:
6 460
Company:
Part Number:
ATMEGA48-20AU
Manufacturer:
Atmel
Quantity:
1 300
Company:
Part Number:
ATMEGA48-20AU
Manufacturer:
ATMEL
Quantity:
9 500
Part Number:
ATMEGA48-20AU
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
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28.4
28.4.1
Table 28-1.
Notes:
28.4.2
28.4.3
2545S–AVR–07/10
Factory
Calibration
User
Calibration
Clock Characteristics
1. Voltage range for ATmega48V/88V/168V.
2. Voltage range for ATmega48/88/168.
Calibrated Internal RC Oscillator Accuracy
External Clock Drive Waveforms
External Clock Drive
Calibration Accuracy of Internal RC Oscillator
Figure 28-3. External Clock Drive Waveforms
Table 28-2.
Symbol
1/t
t
t
t
t
t
Δ
7.3 MHz - 8.1 MHz
CLCL
CHCX
CLCX
CLCH
CHCL
t
CLCL
CLCL
Frequency
8.0 MHz
Parameter
Oscillator
Frequency
Clock Period
High Time
Low Time
Rise Time
Fall Time
Change in period
from one clock
cycle to the next
V
External Clock Drive
IL1
V
IH1
1.8V - 5.5V
2.7V - 5.5V
V
V
3V
Min.
CC
CC
250
100
100
0
= 1.8V - 5.5V
(1)
(2)
Max.
2.0
2.0
4
2
V
Min.
CC
Temperature
100
-40°C - 85°C
40
40
0
= 2.7V - 5.5V
25°C
Max.
ATmega48/88/168
1.6
1.6
10
2
V
Min.
CC
50
20
20
0
Calibration Accuracy
= 4.5V - 5.5V
Max.
±10%
±1%
0.5
0.5
20
2
Units
MHz
ns
μs
%
305
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