ATMEGA168-20MI Atmel, ATMEGA168-20MI Datasheet - Page 311
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ATMEGA168-20MI
Manufacturer Part Number
ATMEGA168-20MI
Description
IC AVR MCU 16K 20MHZ 32-QFN
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA168-20MI
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
16KB (8K 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
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
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28.9
2545S–AVR–07/10
Parallel Programming Characteristics
Figure 28-7. Parallel Programming Timing, Including some General Timing Requirements
Figure 28-8. Parallel Programming Timing, Loading Sequence with Timing Requirements
Note:
PAGEL
XTAL1
(DATA, XA0/1, BS1, BS2)
DATA
BS1
XA0
XA1
1. The timing requirements shown in
loading operation.
Data & Contol
RDY/BSY
ADDR0 (Low Byte)
LOAD ADDRESS
PAGEL
XTAL1
(LOW BYTE)
WR
t
t
BVPH
DVXH
LOAD DATA
(LOW BYTE)
DATA (Low Byte)
t
t
XHXL
PHPL
Figure 28-7
t
t
t
t
t
XLXH
XLDX
XLWL
PLBX
PLWL
t
(that is, t
BVWL
(HIGH BYTE)
LOAD DATA
DATA (High Byte)
t
WLWH
DVXH
t
XLPH
ATmega48/88/168
WLRL
LOAD DATA
, t
XHXL
t
PLXH
, and t
t
WLBX
LOAD ADDRESS
XLDX
(LOW BYTE)
ADDR1 (Low Byte)
) also apply to
t
WLRH
(1)
311
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