ATMEGA169 ATMEL [ATMEL Corporation], ATMEGA169 Datasheet - Page 243

• Manufacturer Part Number: ATMEGA169
• Description: 8-bit Microcontroller with 16K Bytes In-System Programmable Flash
• Manufacturer: ATMEL [ATMEL Corporation]

2514P–AVR–07/06
Table 105. Boundary-scan Signals for the ADC
Signal
Name
HOLD
IREFEN
MUXEN_7
MUXEN_6
MUXEN_5
MUXEN_4
MUXEN_3
MUXEN_2
MUXEN_1
MUXEN_0
NEGSEL_2
NEGSEL_1
NEGSEL_0
PASSEN
PRECH
Direction
as Seen
from the
ADC
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Description
Sample & Hold signal.
Sample analog signal
when low. Hold signal
when high. If
differential amplifier is
used, this signal must
go active when ACLK
is high.
Enables Band-gap
reference as AREF
signal to DAC
Input Mux bit 7
Input Mux bit 6
Input Mux bit 5
Input Mux bit 4
Input Mux bit 3
Input Mux bit 2
Input Mux bit 1
Input Mux bit 0
Input Mux for negative
input for differential
signal, bit 2
Input Mux for negative
input for differential
signal, bit 1
Input Mux for negative
input for differential
signal, bit 0
Enable pass-gate of
differential amplifier.
Precharge output latch
of comparator. (Active
low)
(1)
Recommen-
ded Input
when not
in Use
(Continued)
1
0
0
0
0
0
0
0
0
1
0
0
0
1
1
ATmega169/V
Output Values when
Recommended Inputs
are Used, and CPU is
not Using the ADC
1
0
0
0
0
0
0
0
0
1
0
0
0
1
1
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