ATTINY48-PU Atmel, ATTINY48-PU Datasheet - Page 141
ATTINY48-PU
Manufacturer Part Number
ATTINY48-PU
Description
MCU AVR 4K ISP FLASH 1.8V 28-DIP
Manufacturer
Atmel
Series
AVR® ATtinyr
Specifications of ATTINY48-PU
Core Processor
AVR
Core Size
8-Bit
Speed
12MHz
Connectivity
I²C, SPI
Peripherals
Brown-out Detect/Reset, POR, WDT
Number Of I /o
24
Program Memory Size
4KB (2K x 16)
Program Memory Type
FLASH
Eeprom Size
64 x 8
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 6x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
28-DIP (0.300", 7.62mm)
Processor Series
ATTINY4x
Core
AVR8
Data Bus Width
8 bit
Data Ram Size
256 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
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
6-ch x 10-bit
Package
28PDIP
Device Core
AVR
Family Name
ATtiny
Maximum Speed
12 MHz
Operating Supply Voltage
2.5|3.3|5 V
For Use With
ATSTK600 - DEV KIT FOR AVR/AVR32ATAVRDRAGON - KIT DRAGON 32KB FLASH MEM AVRATAVRISP2 - PROGRAMMER AVR IN SYSTEM
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATTINY48-PU
Manufacturer:
ATMEL
Quantity:
5 530
Company:
Part Number:
ATTINY48-PU
Manufacturer:
AVX
Quantity:
30 000
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15.8.1
8008G–AVR–04/11
Master Transmitter Mode
The following sections describe each of these modes. Possible status codes are described
along with figures detailing data transmission in each of the modes. These figures contain the
following abbreviations:
In
numbers in the circles show the status code held in TWSR, with the prescaler bits masked to
zero. At these points, actions must be taken by the application to continue or complete the TWI
transfer. The TWI transfer is suspended until the TWINT Flag is cleared by software.
When the TWINT Flag is set, the status code in TWSR is used to determine the appropriate soft-
ware action. For each status code, the required software action and details of the following serial
transfer are given in
these tables.
In the Master Transmitter mode, a number of data bytes are transmitted to a Slave Receiver
(see
The format of the following address packet determines whether Master Transmitter or Master
Receiver mode is to be entered. If SLA+W is transmitted, MT mode is entered, if SLA+R is trans-
mitted, MR mode is entered. All the status codes mentioned in this section assume that the
prescaler bits are zero or are masked to zero.
Figure 15-11. Data Transfer in Master Transmitter Mode
SDA
SCL
Figure 15-12
S: START condition
Rs: REPEATED START condition
R: Read bit (high level at SDA)
W: Write bit (low level at SDA)
A: Acknowledge bit (low level at SDA)
A: Not acknowledge bit (high level at SDA)
Data: 8-bit data byte
P: STOP condition
SLA: Slave Address
Figure
15-11). In order to enter a Master mode, a START condition must be transmitted.
TRANSMITTER
Device 1
to
MASTER
Figure
Table 15-2
15-18, circles are used to indicate that the TWINT Flag is set. The
Device 2
RECEIVER
SLAVE
to
Table
15-5. Note that the prescaler bits are masked to zero in
Device 3
........
Device n
V
CC
ATtiny48/88
R1
R2
141
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