ATMEGA16-16PU Atmel, ATMEGA16-16PU Datasheet - Page 197
![IC AVR MCU 16K 16MHZ 5V 40DIP](/photos/6/70/67049/453-40-dip_sml.jpg)
ATMEGA16-16PU
Manufacturer Part Number
ATMEGA16-16PU
Description
IC AVR MCU 16K 16MHZ 5V 40DIP
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheets
1.ATMEGA16L-8MI.pdf
(26 pages)
2.ATMEGA16L-8MI.pdf
(357 pages)
3.ATMEGA16-16PU.pdf
(358 pages)
4.ATMEGA16-16PU.pdf
(351 pages)
Specifications of ATMEGA16-16PU
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
32
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)
4.5 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
40-DIP (0.600", 15.24mm)
Package
40PDIP
Device Core
AVR
Family Name
ATmega
Maximum Speed
16 MHz
Operating Supply Voltage
5 V
Data Bus Width
8 Bit
Number Of Programmable I/os
32
Interface Type
TWI/SPI/USART
On-chip Adc
8-chx10-bit
Number Of Timers
3
Processor Series
ATMEGA16x
Core
AVR8
Data Ram Size
1 KB
Maximum Clock Frequency
16 MHz
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
A/d Inputs
8-Channel, 10-Bit
Cpu Speed
16 MIPS
Eeprom Memory
512 Bytes
Input Output
32
Interface
JTAG/SPI/UART
Memory Type
Flash
Number Of Bits
8
Package Type
44-pin PDIP
Programmable Memory
16K Bytes
Timers
2-8-bit, 1-16-bit
Voltage, Range
4.5-5.5 V
Controller Family/series
AVR MEGA
No. Of I/o's
32
Eeprom Memory Size
512Byte
Ram Memory Size
1KB
Rohs Compliant
Yes
For Use With
ATSTK600-TQFP44 - STK600 SOCKET/ADAPTER 44-TQFPATSTK600-DIP40 - STK600 SOCKET/ADAPTER 40-PDIP770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAGATAVRISP2 - PROGRAMMER AVR IN SYSTEMATJTAGICE2 - AVR ON-CHIP D-BUG SYSTEMATSTK500 - PROGRAMMER AVR STARTER KIT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATMEGA16-16PU
Manufacturer:
Atmel
Quantity:
140
- ATMEGA16L-8MI PDF datasheet
- ATMEGA16L-8MI PDF datasheet #2
- ATMEGA16-16PU PDF datasheet #3
- ATMEGA16-16PU PDF datasheet #4
- Current page: 197 of 351
- Download datasheet (3Mb)
Combining Several TWI
Modes
Multi-master Systems
and Arbitration
2466J–AVR–10/04
In some cases, several TWI modes must be combined in order to complete the desired
action. Consider for example reading data from a serial EEPROM. Typically, such a
transfer involves the following steps:
1. The transfer must be initiated
2. The EEPROM must be instructed what location should be read
3. The reading must be performed
4. The transfer must be finished
Note that data is transmitted both from Master to Slave and vice versa. The Master must
instruct the Slave what location it wants to read, requiring the use of the MT mode. Sub-
sequently, data must be read from the Slave, implying the use of the MR mode. Thus,
the transfer direction must be changed. The Master must keep control of the bus during
all these steps, and the steps should be carried out as an atomical operation. If this prin-
ciple is violated in a multi-master system, another Master can alter the data pointer in
the EEPROM between steps 2 and 3, and the Master will read the wrong data location.
Such a change in transfer direction is accomplished by transmitting a REPEATED
START between the transmission of the address byte and reception of the data. After a
REPEATED START, the Master keeps ownership of the bus. The following figure shows
the flow in this transfer.
Figure 94. Combining Several TWI Modes to Access a Serial EEPROM
If multiple Masters are connected to the same bus, transmissions may be initiated simul-
taneously by one or more of them. The TWI standard ensures that such situations are
handled in such a way that one of the Masters will be allowed to proceed with the trans-
fer, and that no data will be lost in the process. An example of an arbitration situation is
depicted below, where two Masters are trying to transmit data to a Slave Receiver.
Figure 95. An Arbitration Example
S
S = START
SDA
SCL
Transmitted from Master to Slave
SLA+W
TRANSMITTER
Device 1
MASTER
A
Master Transmitter
TRANSMITTER
ADDRESS
Device 2
MASTER
Device 3
RECEIVER
A
SLAVE
Rs = REPEATED START
Rs
Transmitted from Slave to Master
........
SLA+R
Device n
ATmega16(L)
A
V
CC
Master Receiver
DATA
R1
P = STOP
R2
A
197
P
Related parts for ATMEGA16-16PU
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![ATmega16](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
Manufacturer:
Atmel Corporation
Datasheet:
![ATMEGA16-16AU](/photos/6/70/67042/313-44-tqfp_tmb.jpg)
Part Number:
Description:
IC AVR MCU 16K 16MHZ 5V 44TQFP
Manufacturer:
Atmel
Datasheet:
![ATMEGA16-16MU](/photos/12/13/121316/313-44-qfn_tmb.jpg)
Part Number:
Description:
IC AVR MCU 16K 16MHZ 5V 44-QFN
Manufacturer:
Atmel
Datasheet:
![ATMEGA16-16MQ](/photos/12/13/121316/313-44-qfn_tmb.jpg)
Part Number:
Description:
MCU AVR 16K FLASH 16MHZ 44-QFN
Manufacturer:
Atmel
Datasheet:
![ATMEGA16-16PC](/photos/6/70/67049/453-40-dip_tmb.jpg)
Part Number:
Description:
IC AVR MCU 16K 16MHZ COM 40-DIP
Manufacturer:
Atmel
Datasheet:
![ATMEGA16-16MC](/photos/12/13/121316/313-44-qfn_tmb.jpg)
Part Number:
Description:
IC AVR MCU 16K 16MHZ COM 44-QFN
Manufacturer:
Atmel
Datasheet:
![ATMEGA16-16PI](/photos/6/70/67049/453-40-dip_tmb.jpg)
Part Number:
Description:
IC AVR MCU 16K 16MHZ IND 40-DIP
Manufacturer:
Atmel
Datasheet:
![ATMEGA16-16MI](/photos/12/13/121316/313-44-qfn_tmb.jpg)
Part Number:
Description:
IC AVR MCU 16K 16MHZ IND 44-QFN
Manufacturer:
Atmel
Datasheet:
![ATMEGA16-16AI](/photos/6/70/67042/313-44-tqfp_tmb.jpg)
Part Number:
Description:
IC AVR MCU 16K 16MHZ IND 44-TQFP
Manufacturer:
Atmel
Datasheet:
![ATMEGA16-16AU SL383](/photos/6/70/67042/313-44-tqfp_tmb.jpg)
Part Number:
Description:
IC MCU 8BIT 16KB FLASH 44TQFP
Manufacturer:
Atmel
Datasheet:
![ATMEGA16-16AQ](/photos/6/70/67042/313-44-tqfp_tmb.jpg)
Part Number:
Description:
MCU AVR 16K FLASH 16MHZ 44-TQFP
Manufacturer:
Atmel
Datasheet:
![ATMEGA16-16AC](/photos/6/70/67042/313-44-tqfp_tmb.jpg)
Part Number:
Description:
IC AVR MCU 16K 16MHZ COM 44-TQFP
Manufacturer:
Atmel
Datasheet:
![ATMEGA16-16AJ](/photos/6/70/67042/313-44-tqfp_tmb.jpg)
Part Number:
Description:
IC MCU AVR 16K 5V 16MHZ 44-TQFP
Manufacturer:
Atmel
Datasheet: