ATxmega16A4 Atmel Corporation, ATxmega16A4 Datasheet - Page 362
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ATxmega16A4
Manufacturer Part Number
ATxmega16A4
Description
Manufacturer
Atmel Corporation
Specifications of ATxmega16A4
Flash (kbytes)
16 Kbytes
Pin Count
44
Max. Operating Frequency
32 MHz
Cpu
8-bit AVR
# Of Touch Channels
16
Hardware Qtouch Acquisition
No
Max I/o Pins
34
Ext Interrupts
34
Usb Speed
No
Usb Interface
No
Spi
7
Twi (i2c)
2
Uart
5
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
12
Adc Resolution (bits)
12
Adc Speed (ksps)
2000
Analog Comparators
2
Resistive Touch Screen
No
Dac Channels
2
Dac Resolution (bits)
12
Temp. Sensor
Yes
Crypto Engine
AES/DES
Sram (kbytes)
3.3
Eeprom (bytes)
1024
Self Program Memory
YES
Dram Memory
No
Nand Interface
No
Picopower
Yes
Temp. Range (deg C)
-40 to 85
I/o Supply Class
1.6 to 3.6
Operating Voltage (vcc)
1.6 to 3.6
Fpu
No
Mpu / Mmu
no / no
Timers
5
Output Compare Channels
16
Input Capture Channels
16
Pwm Channels
16
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATxmega16A4U-AU
Manufacturer:
SAMSUNG
Quantity:
514
Part Number:
ATxmega16A4U-AU
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
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30. Memory Programming
30.1
30.2
8077H–AVR–12/09
Features
Overview
•
•
•
•
•
•
•
This section describes how to program the Non Volatile Memory (NVM) in XMEGA, and covers
both self-programming and external programming. The NVM consist of the Flash Program Mem-
ory, User Signature and Calibration rows, Fuses and Lock Bits, and EEPROM data memory. For
details on the actual memories, how they are organized and the register description for the NVM
Controller used to access the memories, refer to
The NVM can be accessed for read and write both from application software through self-pro-
gramming and from an external programmer. For both external programming and self-
programming access to the NVM is done through the common NVM Controller, and the two
methods of programming are very similar. Memory access is done by loading address and/or
data into the NVM, and a set of commands and triggers that make the NVM Controller perform
specific tasks on the NVM.
From external programming all memory spaces can be read and written, expect for the Calibra-
tion Row which can only be read. The device can be programmed in-system and is accessed
through the PDI using the PDI or JTAG physical interfaces,
379
Self-programming and Boot Loader support allows application software in the device to read and
write the Flash, User Signature Row and EEPROM, write the Lock Bits to a more secure setting,
and read the Calibration Row and Fuses. The Flash allows Read-While-Write self-programming
meaning that the CPU can continue to operate and execute code while the Flash is being pro-
grammed.
Read and Write access to all memory spaces from
Self-Programming and Boot Loader Support
External Programming
High Security with Separate Boot Lock Bits for
Reset Fuse to Select Reset Vector address to the start of the
Code Efficient Algorithm
Efficient Read-Modify-Write Support
– External programmers
– Application Software
– Real Read-While-Write Self-Programming
– The CPU can run and execute code while Flash is being programmed
– Any communication interface can be used for program upload/download
– Support for in-system and production programming
– Programming through serial PDI or JTAG interface
– Fast and reliable interfaces.
– External programming access
– Boot Loader Section access
– Application Section access
– Application Table access
– Application Section, or
– Boot Loader Section
describes PDI and JTAG in detail.
”Self-Programming and Boot Loader Support” on page 367
”Memories” on page
”External Programming” on page
18.
describes this in detail.
XMEGA A
362
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