ATmega88 Atmel Corporation, ATmega88 Datasheet - Page 5
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ATmega88
Manufacturer Part Number
ATmega88
Description
Manufacturer
Atmel Corporation
Specifications of ATmega88
Flash (kbytes)
8 Kbytes
Pin Count
32
Max. Operating Frequency
20 MHz
Cpu
8-bit AVR
# Of Touch Channels
12
Hardware Qtouch Acquisition
No
Max I/o Pins
23
Ext Interrupts
24
Usb Speed
No
Usb Interface
No
Spi
2
Twi (i2c)
1
Uart
1
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
8
Adc Resolution (bits)
10
Adc Speed (ksps)
15
Analog Comparators
1
Resistive Touch Screen
No
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
1
Eeprom (bytes)
512
Self Program Memory
YES
Dram Memory
No
Nand Interface
No
Picopower
No
Temp. Range (deg C)
-40 to 85
I/o Supply Class
1.8 to 5.5
Operating Voltage (vcc)
1.8 to 5.5
Fpu
No
Mpu / Mmu
no / no
Timers
3
Output Compare Channels
6
Input Capture Channels
1
Pwm Channels
6
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
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Company
Part Number
Manufacturer
Quantity
Price
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Part Number:
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Company:
Part Number:
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Part Number:
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Part Number:
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Manufacturer:
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Manufacturer:
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Manufacturer:
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Quantity:
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2. Overview
2.1
2545TS–AVR–05/11
Block diagram
The Atmel ATmega48/88/168 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
ATmega48/88/168 achieves throughputs approaching 1 MIPS per MHz allowing the system
designer to optimize power consumption versus processing speed.
Figure 2-1.
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
Block Diagram
generation
PORT D (8)
Watchdog
Watchdog
oscillator
Oscillator
8bit T/C 0
8bit T/C 2
USART 0
circuits /
EEPROM
timer
clock
PD[0..7]
POR / BOD &
supervision
PORT B (8)
16bit T/C 1
Analog
Power
RESET
comp.
Flash
PB[0..7]
SPI
CPU
debugWIRE
PORT C (7)
A/D conv.
bandgap
PROGRAM
Internal
SRAM
PC[0..6]
LOGIC
TWI
ATmega48/88/168
6
ADC[6..7]
2
AVCC
XTAL[1..2]
AREF
GND
RESET
5