ATMEGA88-20MU Atmel, ATMEGA88-20MU Datasheet - Page 289

• Manufacturer Part Number: ATMEGA88-20MU
• Description: IC AVR MCU 8K 20MHZ 5V 32-QFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA88-20MU

• 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: 8KB (4K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 512 x 8
• Ram Size: 1K 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-VQFN Exposed Pad, 32-HVQFN, 32-SQFN, 32-DHVQFN
• Package: 32MLF EP
• Device Core: AVR
• Family Name: ATmega
• Maximum Speed: 20 MHz
• Operating Supply Voltage: 3.3|5 V
• Data Bus Width: 8 Bit
• Number Of Programmable I/os: 23
• Interface Type: SPI/TWI/USART
• On-chip Adc: 8-chx10-bit
• Number Of Timers: 3
• Processor Series: ATMEGA8x
• Core: AVR8
• Data Ram Size: 1 KB
• Maximum Clock Frequency: 20 MHz
• 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, ATAVRTS2080A, ATASTK512-EK1-IND
• Minimum Operating Temperature: - 40 C
• A/d Inputs: 8-Channel, 10-Bit
• Cpu Speed: 20 MIPS
• Eeprom Memory: 512 Bytes
• Input Output: 23
• Interface: SPI/TWI/USART
• Memory Type: Flash
• Number Of Bits: 8
• Package Type: 32-pin MLF
• Programmable Memory: 8K Bytes
• Timers: 2-8-bit, 1-16-bit
• Voltage, Range: 4.5-5.5 V
• Controller Family/series: AVR MEGA
• No. Of I/o's: 23
• Eeprom Memory Size: 512Byte
• Ram Memory Size: 1KB
• No. Of Timers: 3
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

2545S–AVR–07/10
Figure 27-1. Parallel Programming
Note:
Table 27-11. Pin Name Mapping
Table 27-12. Pin Values Used to Enter Programming Mode
Signal Name in
Programming Mode
RDY/BSY
OE
WR
BS1
XA0
XA1
PAGEL
BS2
DATA
V
PAGEL
CC
XA1
XA0
BS1
Pin
- 0.3V < AV
CC
< V
{PC[1:0]: PB[5:0]}
RDY/BSY
CC
PAGEL
+12V
Pin Name
BS1
XA0
XA1
BS2
Prog_enable[3]
Prog_enable[2]
Prog_enable[1]
Prog_enable[0]
WR
+ 0.3V, however, AV
OE
PD1
PD2
PD3
PD4
PD5
PD6
PD7
PC2
Symbol
PD1
PD2
PD3
PD4
PD5
PD6
RESET
XTAL1
GND
PD7
PC2
PC[1:0]:PB[5:0]
I/O
I/O
O
I
I
I
I
I
I
I
CC
should always be within 4.5 - 5.5V
Function
0: Device is busy programming, 1: Device is
ready for new command
Output Enable (Active low)
Write Pulse (Active low)
Byte Select 1 (“0” selects Low byte, “1” selects
High byte)
XTAL Action Bit 0
XTAL Action Bit 1
Program memory and EEPROM Data Page
Load
Byte Select 2 (“0” selects Low byte, “1” selects
2’nd High byte)
Bi-directional Data bus (Output when OE is low)
AVCC
VCC
+4.5V - 5.5V
+4.5V - 5.5V
ATmega48/88/168
DATA
Value
0
0
0
0
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