ATxmega16A4 Atmel Corporation, ATxmega16A4 Datasheet - Page 281
![no-image](/images/manufacturer_photos/0/0/79/atmel_corporation_sml.jpg)
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
- Current page: 281 of 445
- Download datasheet (6Mb)
24.11.3
24.11.4
24.11.5
8077H–AVR–12/09
REFRESH - SDRAM Refresh Period Register
INITDLY - SDRAM Initialization Delay Register
SDRAMCTRLB - SDRAM Control Register B
• Bit 15:10 - Reserved
These bits are reserved and will always be read as zero.
• Bit 9:0 - REFRESH[9:0]: SDRAM Refresh Period
This register sets the refresh period as a number of Peripheral 2x clock (CLK
EBI is busy with another external memory access at time of refresh, up to 4 refresh will be
remembered and given at the first available time.
• Bit 15:14 - Reserved
These bits are reserved and will always be read as zero.
• Bit 13:0 - INITDLY[13:0]: SDRAM Initialization Delay
This register is used to delay the initialisation sequence after the controller is enabled until all
voltages are stabilized and the SDRAM clock has been running long enough to take the SDRAM
chip through its initialisation sequence. The initialisation sequence includes pre-charge all banks
to their idle state issuing an auto-refresh cycle and then loading the mode register. The setting in
this register is as a number of Peripheral 2x clock cycles.
Bit
+0x04
+0x05
Read/Write
Initial Value
Bit
+0x06
+0x07
Read/Write
Initial Value
Bit
+0x08
Read/Write
Initial Value
R/W
R/W
R/W
15
15
R
R
7
0
0
7
0
0
7
0
-
-
MRDLY[1:0]
R/W
R/W
R/W
14
14
R
R
6
0
0
6
0
0
6
0
-
-
R/W
R/W
R/W
R/W
13
13
R
5
0
5
0
0
5
0
0
-
ROWCYCDLY[2:0]
R/W
R/W
R/W
R/W
12
12
R
4
0
4
0
0
4
0
0
REFRESH[7:0]
-
INITDLY[7:0]
R/W
R/W
R/W
R/W
11
11
R
3
0
3
0
0
3
0
0
-
INITDLY[9:8]
R/W
R/W
R/W
R/W
10
10
R
2
0
2
0
0
2
0
0
-
RPDLY[2:0]
R/W
R/W
R/W
R/W
R/W
REFRESH[9:8]
1
0
1
9
0
0
1
9
0
0
R/W
R/W
R/W
R/W
R/W
0
0
0
8
0
0
0
8
0
0
XMEGA A
PER
) cycles. If the
SDRAMCTRLB
REFRESHL
REFRESHH
INITDLYL
INITDLYH
281
Related parts for ATxmega16A4
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![U641B](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
INTERVAL AND WIPE/WASH WIPER CONTROL IC WITH DELAY
Manufacturer:
ATMEL Corporation
Datasheet:
![U4082B](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
Low-Voltage Voice-Switched IC for Hands-Free Operation
Manufacturer:
ATMEL Corporation
Datasheet:
![U4089B](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
MONOLITHIC INTEGRATED FEATUREPHONE CIRCUIT
Manufacturer:
ATMEL Corporation
Datasheet:
![U4255BM-M](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
AM-FM Receiver IC U4255BM-M
Manufacturer:
ATMEL Corporation
Datasheet:
![U4089B-P](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
Monolithic Integrated Feature Phone Circuit
Manufacturer:
ATMEL Corporation
Datasheet:
![TDA4470](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
Multistandard Video-IF and Quasi Parallel Sound Processing
Manufacturer:
ATMEL Corporation
Datasheet:
![ATF22V10B-25PC](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
High-performance EE PLD
Manufacturer:
ATMEL Corporation
Datasheet:
![AT89C51ED2-IM](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
8-bit Flash Microcontroller
Manufacturer:
ATMEL Corporation
Datasheet:
![AT24C01](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
2-Wire Serial EEPROM
Manufacturer:
ATMEL Corporation
Datasheet:
![U6046B](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
U6046BREAR WINDOW HEATING TIMER / LONG-TERM TIMER
Manufacturer:
ATMEL Corporation
Datasheet: