ATMEGA128A-MN Atmel, ATMEGA128A-MN Datasheet - Page 267
![IC MCU AVR 128K FLASH 64VQFN](/photos/12/13/121332/313-64-tqfp_sml.jpg)
ATMEGA128A-MN
Manufacturer Part Number
ATMEGA128A-MN
Description
IC MCU AVR 128K FLASH 64VQFN
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA128A-MN
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
EBI/EMI, I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
53
Program Memory Size
128KB (64K x 16)
Program Memory Type
FLASH
Eeprom Size
4K x 8
Ram Size
4K 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
64-TQFP
Core
AVR8
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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8151H–AVR–02/11
Table 24-5.
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
SCTEST
ST
VCCREN
Boundary-scan Signals for the ADC (Continued)
Direction
as Seen
from the
ADC
Input
Input
Input
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 gain stages
are 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 gain
stages.
Precharge output latch of
comparator. (Active low)
Switch-cap TEST
enable. Output from x10
gain stage send out to
Port Pin having ADC_4
Output of gain stages will
settle faster if this signal
is high first two ACLK
periods after AMPEN
goes high.
Selects Vcc as the ACC
reference voltage.
Recommen-
ded Input
when not
in Use
1
0
0
0
0
0
0
0
0
1
0
0
0
1
1
0
0
0
ATmega128A
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
0
0
0
267
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