atmega323l ATMEL Corporation, atmega323l Datasheet - Page 204

• Manufacturer Part Number: atmega323l
• Description: Atmega323 8-bit Avr Microcontroller With 32k Bytes Of In-system Programmable Flash
• Manufacturer: ATMEL Corporation

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