atmega323l ATMEL Corporation, atmega323l Datasheet - Page 170

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

Internal signals
170
ATmega323(L)
Figure 91. Observe-only Cell
ATmega323 contains a lot of scan chains for internal signals. The description of these
signals are not public. However, the user must apply safe values to these cells before
applying the Update-DR state of the TAP controller.
Note:
Table 57. Boundary-Scan signals for the ADC
Signal Name
SIG_PRIVATE0
SIG_PRIVATE1
SIG_PRIVATE2
SIG_PRIVATE3
SIG_PRIVATE4
SIG_PRIVATE5
SIG_PRIVATE6
SIG_PRIVATE7
SIG_PRIVATE8
SIG_PRIVATE9
SIG_PRIVATE10
SIG_PRIVATE11
SIG_PRIVATE12
SIG_PRIVATE13
SIG_PRIVATE14
SIG_PRIVATE15
SIG_PRIVATE16
SIG_PRIVATE17
Incorrect setting of the scan cells for internal signals may cause signal contention and
can damage the part. Make sure the safe values are used.
From system pin
General Scan Cell
General Scan Cell
General Scan Cell
General Scan Cell
General Scan Cell
General Scan Cell
General Scan Cell
General Scan Cell
General Scan Cell
General Scan Cell
Type of scan cell
General Scan Cell
General Scan Cell
General Scan Cell
General Scan Cell
General Scan Cell
General Scan Cell
General Scan Cell
General Scan Cell
previous
From
cell
ShiftDR
0
1
ClockDR
Recommended input when not in use
1
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
D
FF1
Q
next
cell
To
To system logic
1457G–AVR–09/03