MCU AVR 16K FLASH 16MHZ 40-PDIP

ATMEGA16A-PU

Manufacturer Part NumberATMEGA16A-PU
DescriptionMCU AVR 16K FLASH 16MHZ 40-PDIP
ManufacturerAtmel
SeriesAVR® ATmega
ATMEGA16A-PU datasheets
 


Specifications of ATMEGA16A-PU

Core ProcessorAVRCore Size8-Bit
Speed16MHzConnectivityI²C, SPI, UART/USART
PeripheralsBrown-out Detect/Reset, POR, PWM, WDTNumber Of I /o32
Program Memory Size16KB (8K x 16)Program Memory TypeFLASH
Eeprom Size512 x 8Ram Size1K x 8
Voltage - Supply (vcc/vdd)2.7 V ~ 5.5 VData ConvertersA/D 8x10b
Oscillator TypeInternalOperating Temperature-40°C ~ 85°C
Package / Case40-DIP (0.600", 15.24mm)Processor SeriesATMEGA16x
CoreAVR8Data Bus Width8 bit
Data Ram Size1 KBInterface Type2-Wire/SPI/USART
Maximum Clock Frequency16 MHzNumber Of Programmable I/os32
Number Of Timers3Maximum Operating Temperature+ 85 C
Mounting StyleThrough Hole3rd Party Development ToolsEWAVR, EWAVR-BL
Development Tools By SupplierATAVRDRAGON, ATSTK500, ATSTK600, ATAVRISP2, ATAVRONEKITMinimum Operating Temperature- 40 C
On-chip Adc8-ch x 10-bitPackage40PDIP
Device CoreAVRFamily NameATmega
Maximum Speed16 MHzOperating Supply Voltage3.3|5 V
Controller Family/seriesAVR MEGANo. Of I/o's32
Eeprom Memory Size512ByteRam Memory Size1KB
Cpu Speed16MHzRohs CompliantYes
For Use WithATSTK600 - DEV KIT FOR AVR/AVR32ATSTK500 - PROGRAMMER AVR STARTER KITLead Free Status / RoHS StatusLead free / RoHS Compliant
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Page 163/352

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Table 19-2
that Normal Speed mode has higher toleration of baud rate variations.
Table 19-2.
# (Data+Parity Bit)
Table 19-3.
# (Data+Parity Bit)
The recommendations of the maximum receiver baud rate error was made under the assump-
tion that the receiver and transmitter equally divides the maximum total error.
There are two possible sources for the receivers baud rate error. The receiver’s system clock
(XTAL) will always have some minor instability over the supply voltage range and the tempera-
ture range. When using a crystal to generate the system clock, this is rarely a problem, but for a
resonator the system clock may differ more than 2% depending of the resonators tolerance. The
second source for the error is more controllable. The baud rate generator can not always do an
exact division of the system frequency to get the baud rate wanted. In this case an UBRR value
that gives an acceptable low error can be used if possible.
19.9
Multi-processor Communication Mode
Setting the Multi-processor Communication mode (MPCM) bit in UCSRA enables a filtering
function of incoming frames received by the USART Receiver. Frames that do not contain
address information will be ignored and not put into the receive buffer. This effectively reduces
the number of incoming frames that has to be handled by the CPU, in a system with multiple
MCUs that communicate via the same serial bus. The Transmitter is unaffected by the MPCM
setting, but has to be used differently when it is a part of a system utilizing the Multi-processor
Communication mode.
8154B–AVR–07/09
and
Table 19-3
list the maximum receiver baud rate error that can be tolerated. Note
Recommended Maximum Receiver Baud Rate Error for Normal Speed Mode
(U2X = 0)
D
R
(%)
R
(%)
slow
fast
5
93.20
106.67
6
94.12
105.79
7
94.81
105.11
8
95.36
104.58
9
95.81
104.14
10
96.17
103.78
Recommended Maximum Receiver Baud Rate Error for Double Speed Mode
(U2X = 1)
D
R
(%)
R
(%)
slow
fast
5
94.12
105.66
6
94.92
104.92
7
95.52
104.35
8
96.00
103.90
9
96.39
103.53
10
96.70
103.23
ATmega16A
Max Total Error
Recommended Max Receiver
(%)
Error (%)
+6.67/-6.8
± 3.0
+5.79/-5.88
± 2.5
+5.11/-5.19
± 2.0
+4.58/-4.54
± 2.0
+4.14/-4.19
± 1.5
+3.78/-3.83
± 1.5
Max Total Error
Recommended Max Receiver
(%)
Error (%)
+5.66/-5.88
± 2.5
+4.92/-5.08
± 2.0
+4.35/-4.48
± 1.5
+3.90/-4.00
± 1.5
+3.53/-3.61
± 1.5
+3.23/-3.30
± 1.0
163