ATMEGA323-8AC Atmel, ATMEGA323-8AC Datasheet - Page 204

• Manufacturer Part Number: ATMEGA323-8AC
• Description: IC AVR MCU 32K 8MHZ COM 44TQFP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA323-8AC

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 8MHz
• 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): 4.5 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 44-TQFP, 44-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: ATMEGA3238AC

Programming Command
Register
204
ATmega323(L)
Figure 101. Programming Enable Register
The Programming Command Register is a 15-bit register. This register is used to seri-
ally shift in programming commands, and to serially shift out the result of the previous
command, if any. The JTAG Programming Instruction Set is shown in Table 71. The
state sequence when shifting in the programming commands is illustrated in Figure 102.
Figure 102. Programming Command Register
TDO
TDI
D
A
T
A
$A370
=
TDO
TDI
R
O
D
D
R
D
S
T
B
E
S
A
E
S
S
A
T
A
/
ClockDR & PROG_ENABLE
EEPROM
Lock Bits
D
Fuses
Flash
Q
Programming enable
1457G–AVR–09/03