ATMEGA32A-MNR Atmel, ATMEGA32A-MNR Datasheet - Page 293

• Manufacturer Part Number: ATMEGA32A-MNR
• Description: IC MCU AVR 32K 16MHZ 44VQFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA32A-MNR

• 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: 32KB (16K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 1K x 8
• Ram Size: 2K 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: 44-VFQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

26.10.12 Virtual Flash Page Read Register
26.10.13 Programming Algorithm
8155C–AVR–02/11
Figure 26-17. Virtual Flash Page Load Register
The Virtual Flash Page Read Register is a virtual scan chain with length equal to the number of
bits in one Flash page plus 8. Internally the Shift Register is 8-bit, and the data are automatically
transferred from the Flash data page byte by byte. The first 8 cycles are used to transfer the first
byte to the internal Shift Register, and the bits that are shifted out during these 8 cycles should
be ignored. Following this initialization, data are shifted out starting with the LSB of the first
instruction in the page and ending with the MSB of the last instruction in the page. This provides
an efficient way to read one full Flash page to verify programming.
Figure 26-18. Virtual Flash Page Read Register
All references below of type “1a”, “1b”, and so on, refer to
TDO
TDO
TDI
TDI
D
A
T
A
D
A
T
A
Machine
Machine
State
State
STROBES
STROBES
ADDRESS
ADDRESS
Table
EEPROM
EEPROM
Lock Bits
Lock Bits
Fuses
Fuses
Flash
Flash
26-15.
ATmega32A
293