ATMEGA16U2-MU Atmel, ATMEGA16U2-MU Datasheet - Page 256

• Manufacturer Part Number: ATMEGA16U2-MU
• Description: MCU AVR 16K FLASH USB 32-VQFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA16U2-MU

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: SPI, UART/USART, USB
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 22
• Program Memory Size: 16KB (8K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 512 x 8
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-VQFN Exposed Pad, 32-HVQFN, 32-SQFN, 32-DHVQFN
• Core: AVR8
• Processor Series: ATMEGA16x
• Data Bus Width: 8 bit
• Maximum Clock Frequency: 16 MHz
• Data Ram Size: 1.25 KB
• Data Rom Size: 512 B
• Number Of Programmable I/os: 22
• Number Of Timers: 2
• Mounting Style: SMD/SMT
• Height: 0.95 mm
• Interface Type: SPI, UART
• Length: 5 mm
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 2.7 V
• Width: 5 mm
• For Use With: ATSTK600 - DEV KIT FOR AVR/AVR32ATSTK500 - PROGRAMMER AVR STARTER KIT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Data Converters: -
• Lead Free Status / Rohs Status: Details

25.7.6
25.7.7
25.7.8
7799D–AVR–11/10
Reading the Flash
Reading the EEPROM
Programming the Fuse Low Bits
Figure 25-4. Programming the EEPROM Waveforms
The algorithm for reading the Flash memory is as follows (refer to
page 253
The algorithm for reading the EEPROM memory is as follows (refer to
on page 253
The algorithm for programming the Fuse Low bits is as follows (refer to
on page 253
1. A: Load Command “0000 0010”.
2. H: Load Address Extended Byte (0x00- 0xFF).
3. G: Load Address High Byte (0x00 - 0xFF).
4. B: Load Address Low Byte (0x00 - 0xFF).
5. Set OE to “0”, and BS1 to “0”. The Flash word low byte can now be read at DATA.
6. Set BS to “1”. The Flash word high byte can now be read at DATA.
7. Set OE to “1”.
1. A: Load Command “0000 0011”.
2. G: Load Address High Byte (0x00 - 0xFF).
3. B: Load Address Low Byte (0x00 - 0xFF).
4. Set OE to “0”, and BS1 to “0”. The EEPROM Data byte can now be read at DATA.
5. Set OE to “1”.
1. A: Load Command “0100 0000”.
2. C: Load Data Low Byte. Bit n = “0” programs and bit n = “1” erases the Fuse bit.
3. Give WR a negative pulse and wait for RDY/BSY to go high.
RESET +12V
RDY/BSY
PAGEL
XTAL1
DATA
XA1
XA0
BS1
BS2
WR
OE
for details on Command and Address loading):
for details on Command and Address loading):
for details on Command and Data loading):
0x11
A
ADDR. HIGH
G
ADDR. LOW
B
DATA
C
XX
E
ADDR. LOW
ATmega8U2/16U2/32U2
B
DATA
C
K
XX
E
“Programming the Flash” on
“Programming the Flash”
“Programming the Flash”
L
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