ATMEGA16A-MUR Atmel, ATMEGA16A-MUR Datasheet - Page 283
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ATMEGA16A-MUR
Manufacturer Part Number
ATMEGA16A-MUR
Description
MCU AVR 16KB FLASH 16MHZ 44QFN
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheet
1.ATMEGA16A-MU.pdf
(352 pages)
Specifications of ATMEGA16A-MUR
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)
2.7 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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26.10.7
26.10.8
26.10.9
8154B–AVR–07/09
Data Registers
Reset Register
Programming Enable Register
Note:
The Data Registers are selected by the JTAG Instruction Registers described in section
gramming Specific JTAG Instructions” on page
programming operations are:
The Reset Register is a Test Data Register used to reset the part during programming. It is
required to reset the part before entering programming mode.
A high value in the Reset Register corresponds to pulling the external Reset low. The part is
reset as long as there is a high value present in the Reset Register. Depending on the Fuse set-
tings for the clock options, the part will remain reset for a Reset Time-out Period (refer to
Sources” on page
not latched, so the reset will take place immediately, as shown in
The Programming Enable Register is a 16-bit register. The contents of this register is compared
to the programming enable signature, binary code 1010_0011_0111_0000. When the contents
of the register is equal to the programming enable signature, programming via the JTAG port is
enabled. The register is reset to 0 on Power-on Reset, and should always be reset when leaving
Programming mode.
• Shift-DR: Flash data are automatically read one byte at a time and shifted out on TDO by the
• Reset Register
• Programming Enable Register
• Programming Command Register
• Virtual Flash Page Load Register
• Virtual Flash Page Read Register
TCK input. The TDI input is ignored.
The JTAG instruction PROG_PAGEREAD can only be used if the AVR device is the first device in
JTAG scan chain. If the AVR cannot be the first device in the scan chain, the byte-wise program-
ming algorithm must be used.
25) after releasing the Reset Register. The output from this Data Register is
280. The Data Registers relevant for
Figure 24-2 on page
ATmega16A
234.
“Clock
“Pro-
283
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