ATMEGA32A-MNR Atmel, ATMEGA32A-MNR Datasheet - Page 230
![IC MCU AVR 32K 16MHZ 44VQFN](/photos/12/13/121316/313-44-qfn_sml.jpg)
ATMEGA32A-MNR
Manufacturer Part Number
ATMEGA32A-MNR
Description
IC MCU AVR 32K 16MHZ 44VQFN
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheet
1.ATMEGA32A-MU.pdf
(353 pages)
Specifications of ATMEGA32A-MNR
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
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)
2.7 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
44-VFQFN Exposed Pad
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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23.4
8155C–AVR–02/11
TAP Controller
Figure 23-2. TAP Controller State Diagram
The TAP controller is a 16-state finite state machine that controls the operation of the Boundary-
scan circuitry, JTAG programming circuitry, or On-chip Debug system. The state transitions
depicted in
transition) at the time of the rising edge at TCK. The initial state after a Power-On Reset is Test-
Logic-Reset.
As a definition in this document, the LSB is shifted in and out first for all Shift Registers.
Assuming Run-Test/Idle is the present state, a typical scenario for using the JTAG interface is:
• At the TMS input, apply the sequence 1, 1, 0, 0 at the rising edges of TCK to enter the Shift
Instruction Register – Shift-IR state. While in this state, shift the four bits of the JTAG
instructions into the JTAG Instruction Register from the TDI input at the rising edge of TCK.
1
0
Test-Logic-Reset
Figure 23-2
Run-Test/Idle
0
depend on the signal present on TMS (shown adjacent to each state
1
1
0
Select-DR Scan
Capture-DR
Update-DR
Pause-DR
Exit1-DR
Exit2-DR
Shift-DR
1
0
0
1
0
1
1
0
1
1
0
0
1
0
Select-IR Scan
Capture-IR
Update-IR
ATmega32A
Pause-IR
Exit1-IR
Exit2-IR
Shift-IR
1
0
0
1
0
1
1
0
1
1
0
0
230
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