ATTINY84V-10PU Atmel, ATTINY84V-10PU Datasheet - Page 129
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ATTINY84V-10PU
Manufacturer Part Number
ATTINY84V-10PU
Description
AVR MCU, 8K FLASH, 512B RAM, 512B EE
Manufacturer
Atmel
Datasheet
1.ATTINY84V-10PU.pdf
(233 pages)
Specifications of ATTINY84V-10PU
Controller Family/series
AVR Tiny
No. Of I/o's
12
Eeprom Memory Size
512Byte
Ram Memory Size
1KB
Cpu Speed
10MHz
Core Size
8bit
Program Memory Size
8KB
Oscillator Type
External, Internal
Processor Series
ATTINY8x
Core
AVR8
Data Bus Width
8 bit
Program Memory Type
Flash
Data Ram Size
512 B
Interface Type
SPI
Maximum Clock Frequency
10 MHz
Number Of Programmable I/os
12
Number Of Timers
2
Maximum Operating Temperature
+ 85 C
Mounting Style
Through Hole
Package / Case
PDIP-14
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 8 Channel
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ATTINY84V-10PU
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
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16.3.5
16.3.6
16.4
16.4.1
16.4.2
16.4.3
16.4.4
16.4.5
8006F–AVR–02/07
Alternative USI Usage
Start Condition Detector
Clock speed considerations
Half-duplex Asynchronous Data Transfer
4-bit Counter
12-bit Timer/Counter
Edge Triggered External Interrupt
Software Interrupt
The start condition detector is shown in
the range of 50 to 300 ns) to ensure valid sampling of the SCL line. The start condition detector
is only enabled in Two-wire mode.
The start condition detector is working asynchronously and can therefore wake up the processor
from the Power-down sleep mode. However, the protocol used might have restrictions on the
SCL hold time. Therefore, when using this feature in this case the Oscillator start-up time set by
the CKSEL Fuses (see
into the consideration. See the USISIF bit description in
130
Maximum frequency for SCL and SCK is f
receieve rate in both two- and three-wire mode. In two-wire slave mode the Two-wire Clock Con-
trol Unit will hold the SCL low until the slave is ready to receive more data. This may reduce the
actual data rate in two-wire mode.
When the USI unit is not used for serial communication, it can be set up to do alternative tasks
due to its flexible design.
By utilizing the Shift Register in Three-wire mode, it is possible to implement a more compact
and higher performance UART than by software only.
The 4-bit counter can be used as a stand-alone counter with overflow interrupt. Note that if the
counter is clocked externally, both clock edges will generate an increment.
Combining the USI 4-bit counter and Timer/Counter0 allows them to be used as a 12-bit
counter.
By setting the counter to maximum value (F) it can function as an additional external interrupt.
The Overflow Flag and Interrupt Enable bit are then used for the external interrupt. This feature
is selected by the USICS1 bit.
The counter overflow interrupt can be used as a software interrupt triggered by a clock strobe.
for further details.
”Clock Systems and their Distribution” on page
Figure 16-6 on page
CK
/4. This is also the maximum data transmit and
”USISR – USI Status Register” on page
128. The SDA line is delayed (in
ATtiny24/44/84
26) must also be taken
129
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