ATMEGA165-16AI Atmel, ATMEGA165-16AI Datasheet - Page 225
![IC AVR MCU 16K 16MHZ 64TQFP](/photos/12/13/121332/313-64-tqfp_sml.jpg)
ATMEGA165-16AI
Manufacturer Part Number
ATMEGA165-16AI
Description
IC AVR MCU 16K 16MHZ 64TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA165-16AI
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
SPI, UART/USART, USI
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
54
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
64-TQFP, 64-VQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
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2573G–AVR–07/09
As an example, consider the task of verifying a 1.5V ± 5% input signal at ADC channel 3
when the power supply is 5.0V and AREF is externally connected to V
The recommended values from Table 88 are used unless other values are given in the
algorithm in Table 89. Only the DAC and port pin values of the Scan Chain are shown.
The column “Actions” describes what JTAG instruction to be used before filling the
Boundary-scan Register with the succeeding columns. The verification should be done
on the data scanned out when scanning in the data on the same row in the table.
Table 89. Algorithm for Using the ADC
Using this algorithm, the timing constraint on the HOLD signal constrains the TCK clock
frequency. As the algorithm keeps HOLD high for five steps, the TCK clock frequency
has to be at least five times the number of scan bits divided by the maximum hold time,
t
hold,max
Step
1
2
3
4
5
6
7
8
9
10
11
Actions
SAMPLE_
PRELOAD
EXTEST
Verify the
COMP bit
scanned
out to be 0
Verify the
COMP bit
scanned
out to be 1
The lower limit is:
The upper limit is:
ADCEN
1
1
1
1
1
1
1
1
1
1
1
DAC
0x200
0x200
0x200
0x123
0x123
0x200
0x200
0x200
0x143
0x143
0x200
1024 1.5V 0,95 5V
1024 1.5V 1.05 5V
MUXEN
⋅
0x08
0x08
0x08
0x08
0x08
0x08
0x08
0x08
0x08
0x08
0x08
⋅
⋅
⋅
HOLD
1
0
1
1
1
1
0
1
1
1
1
⁄
⁄
PRECH
=
=
291
323
1
1
1
1
0
1
1
1
1
0
1
=
ATmega165/V
=
0x123
0x143
PA3.
Data
0
0
0
0
0
0
0
0
0
0
0
CC
PA3.
Control
.
0
0
0
0
0
0
0
0
0
0
0
PA3.
Pull-
up_
Enable
0
0
0
0
0
0
0
0
0
0
0
225
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