ATTINY88-MU Atmel, ATTINY88-MU Datasheet - Page 155
![MCU AVR 8K ISP FLASH 1.8V 32-QFN](/photos/12/13/121310/attiny88-mu_sml.jpg)
ATTINY88-MU
Manufacturer Part Number
ATTINY88-MU
Description
MCU AVR 8K ISP FLASH 1.8V 32-QFN
Manufacturer
Atmel
Series
AVR® ATtinyr
Specifications of ATTINY88-MU
Core Processor
AVR
Core Size
8-Bit
Speed
12MHz
Connectivity
I²C, SPI
Peripherals
Brown-out Detect/Reset, POR, WDT
Number Of I /o
28
Program Memory Size
8KB (4K x 16)
Program Memory Type
FLASH
Eeprom Size
64 x 8
Ram Size
512 x 8
Voltage - Supply (vcc/vdd)
1.8 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
Processor Series
ATTINY8x
Core
AVR8
Data Bus Width
8 bit
Data Ram Size
512 B
Interface Type
2-Wire, I2S, SPI
Maximum Clock Frequency
12 MHz
Number Of Programmable I/os
28
Number Of Timers
2
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, ATQT600, ATAVRTS2080B
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 8 Channel
Package
32QFN EP
Device Core
AVR
Family Name
ATtiny
Maximum Speed
12 MHz
Operating Supply Voltage
2.5|3.3|5 V
Cpu Family
ATtiny
Device Core Size
8b
Frequency (max)
12MHz
Total Internal Ram Size
512Byte
# I/os (max)
28
Number Of Timers - General Purpose
2
Operating Supply Voltage (typ)
2.5/3.3/5V
Operating Supply Voltage (max)
5.5V
Operating Supply Voltage (min)
1.8V
Instruction Set Architecture
RISC
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
32
Package Type
QFN EP
For Use With
ATSTK600-DIP40 - STK600 SOCKET/ADAPTER 40-PDIPATAVRDRAGON - KIT DRAGON 32KB FLASH MEM AVR
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATTINY88-MU
Manufacturer:
ATMEL
Quantity:
21 342
Part Number:
ATTINY88-MU
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Part Number:
ATTINY88-MUR
Manufacturer:
AT
Quantity:
20 000
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8008G–AVR–04/11
Figure 15-20. An Arbitration Example
Several different scenarios may arise during arbitration, as described below:
This is summarized in
Figure 15-21. Possible Status Codes Caused by Arbitration
• Two or more masters are performing identical communication with the same Slave. In this
• Two or more masters are accessing the same Slave with different data or direction bit. In this
• Two or more masters are accessing different slaves. In this case, arbitration will occur in the
START
case, neither the Slave nor any of the masters will know about the bus contention.
case, arbitration will occur, either in the READ/WRITE bit or in the data bits. The masters
trying to output a one on SDA while another Master outputs a zero will lose the arbitration.
Losing masters will switch to not addressed Slave mode or wait until the bus is free and
transmit a new START condition, depending on application software action.
SLA bits. Masters trying to output a one on SDA while another Master outputs a zero will lose
the arbitration. Masters losing arbitration in SLA will switch to Slave mode to check if they are
being addressed by the winning Master. If addressed, they will switch to SR or ST mode,
depending on the value of the READ/WRITE bit. If they are not being addressed, they will
switch to not addressed Slave mode or wait until the bus is free and transmit a new START
condition, depending on application software action.
SDA
SCL
Address / General Call
Direction
received
Own
TRANSMITTER
Device 1
Figure
Yes
MASTER
Arbitration lost in SLA
SLA
Write
Read
15-21. Possible status values are given in circles.
TRANSMITTER
Device 2
No
MASTER
Device 3
RECEIVER
SLAVE
68/78
38
B0
Arbitration lost in Data
........
TWI bus will be released and not addressed slave mode will be entered
A START condition will be transmitted when the bus becomes free
Data byte will be received and NOT ACK will be returned
Data byte will be received and ACK will be returned
Last data byte will be transmitted and NOT ACK should be received
Data byte will be transmitted and ACK should be received
Device n
Data
V
CC
R1
ATtiny48/88
R2
STOP
155
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