ATTINY84-20PU Atmel, ATTINY84-20PU Datasheet - Page 149
![IC MCU AVR 8K FLASH 20MHZ 14-DIP](/photos/7/39/73953/313-14-dip_sml.jpg)
ATTINY84-20PU
Manufacturer Part Number
ATTINY84-20PU
Description
IC MCU AVR 8K FLASH 20MHZ 14-DIP
Manufacturer
Atmel
Series
AVR® ATtinyr
Specifications of ATTINY84-20PU
Core Processor
AVR
Core Size
8-Bit
Speed
20MHz
Connectivity
USI
Peripherals
Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
Number Of I /o
12
Program Memory Size
8KB (4K x 16)
Program Memory Type
FLASH
Eeprom Size
512 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
14-DIP (0.300", 7.62mm)
Processor Series
ATTINY8x
Core
AVR8
Data Bus Width
8 bit
Data Ram Size
512 B
Interface Type
SPI
Maximum Clock Frequency
20 MHz
Number Of Programmable I/os
12
Number Of Timers
2
Operating Supply Voltage
2.7 V to 5.5 V
Maximum Operating Temperature
+ 85 C
Mounting Style
Through Hole
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
Controller Family/series
AVR Tiny
No. Of I/o's
12
Eeprom Memory Size
512Byte
Ram Memory Size
512Byte
Cpu Speed
20MHz
No. Of Timers
2
Rohs Compliant
Yes
Package
14PDIP
Device Core
AVR
Family Name
ATtiny
Maximum Speed
20 MHz
For Use With
ATSTK600 - DEV KIT FOR AVR/AVR32770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAGATAVRISP2 - PROGRAMMER AVR IN SYSTEM
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATTINY84-20PU
Manufacturer:
XILINX
Quantity:
25
- Current page: 149 of 238
- Download datasheet (5Mb)
16.13.3
16.13.3.1
16.13.3.2
16.13.4
8006K–AVR–10/10
ADCL and ADCH – ADC Data Register
ADCSRB – ADC Control and Status Register B
ADLAR = 0
ADLAR = 1
When an ADC conversion is complete, the result is found in these two registers.
When ADCL is read, the ADC Data Register is not updated until ADCH is read. Consequently, if
the result is left adjusted and no more than 8-bit precision is required, it is sufficient to read
ADCH. Otherwise, ADCL must be read first, then ADCH.
The ADLAR bit in ADCSRB, and the MUXn bits in ADMUX affect the way the result is read from
the registers. If ADLAR is set, the result is left adjusted. If ADLAR is cleared (default), the result
is right adjusted.
• ADC9:0: ADC Conversion Result
These bits represent the result from the conversion, as detailed in
page
• Bit 7 – BIN: Bipolar Input Mode
The gain stage is working in the unipolar mode as default, but the bipolar mode can be selected
by writing the BIN bit in the ADCSRB register. In the unipolar mode only one-sided conversions
are supported and the voltage on the positive input must always be larger than the voltage on
the negative input. Otherwise the result is saturated to the voltage reference. In the bipolar mode
two-sided conversions are supported and the result is represented in the two’s complement
form. In the unipolar mode the resolution is 10 bits and the bipolar mode the resolution is 9 bits +
1 sign bit.
Bit
0x05 (0x25)
0x04 (0x24)
Read/Write
Initial Value
Bit
0x05 (0x25)
0x04 (0x24)
Read/Write
Initial Value
Bit
0x03 (0x23)
Read/Write
Initial Value
143.
ADC7
ADC9
ADC1
R/W
BIN
15
15
–
7
R
R
0
0
7
R
R
0
0
7
0
ADC6
ADC8
ADC0
ACME
R/W
14
14
R
R
R
R
–
6
0
0
6
0
0
6
0
ADC5
ADC7
R/W
13
13
R
R
R
R
–
5
0
0
–
5
0
0
5
–
0
ADLAR
ADC4
ADC6
R/W
12
12
R
R
R
R
–
4
0
0
–
4
0
0
4
0
ADC3
ADC5
R/W
11
11
R
R
R
R
–
3
0
0
–
3
0
0
3
–
0
ADTS2
ADC2
ADC4
R/W
10
10
R
R
R
R
–
2
0
0
–
2
0
0
2
0
“ADC Conversion Result” on
ATtiny24/44/84
ADTS1
ADC9
ADC1
ADC3
R/W
R
R
R
R
9
1
0
0
9
–
1
0
0
1
0
ADTS0
ADC8
ADC0
ADC2
R/W
R
R
R
R
8
0
0
0
8
–
0
0
0
0
0
ADCSRB
ADCH
ADCL
ADCH
ADCL
149
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