ATSAM3U4EA-AU Atmel, ATSAM3U4EA-AU Datasheet - Page 484
ATSAM3U4EA-AU
Manufacturer Part Number
ATSAM3U4EA-AU
Description
IC MCU 32BIT 256KB FLASH 144LQFP
Manufacturer
Atmel
Series
SAM3Ur
Specifications of ATSAM3U4EA-AU
Core Processor
ARM® Cortex-M3™
Core Size
32-Bit
Speed
96MHz
Connectivity
EBI/EMI, I²C, MMC, SPI, SSC, UART/USART, USB
Peripherals
Brown-out Detect/Reset, DMA, I²S, POR, PWM, WDT
Number Of I /o
96
Program Memory Size
256KB (256K x 8)
Program Memory Type
FLASH
Ram Size
52K x 8
Voltage - Supply (vcc/vdd)
1.65 V ~ 1.95 V
Data Converters
A/D 8x10b, 8x12b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
144-LQFP
Processor Series
ATSAM3x
Core
ARM Cortex M3
Data Bus Width
32 bit
Data Ram Size
52 KB
Interface Type
4xUSART, 2xTWI, 5xSPI, Bus
Maximum Clock Frequency
96 MHz
Number Of Programmable I/os
96
Number Of Timers
8
Operating Supply Voltage
1.62 V to 3.6 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
JTRACE-CM3, AT91SAM3U-EK, MDK-ARM, RL-ARM, ULINK2
Development Tools By Supplier
ATSAM3U-EK
Controller Family/series
SAM3U
No. Of I/o's
96
Ram Memory Size
52KB
Cpu Speed
96MHz
No. Of Timers
3
Rohs Compliant
Yes
Minimum Operating Temperature
- 40 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATSAM3U4EA-AU
Manufacturer:
MITSUBISHI
Quantity:
100
Company:
Part Number:
ATSAM3U4EA-AU
Manufacturer:
Atmel
Quantity:
600
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28.14.10 PMC Clock Generator PLLA Register
Name:
Address:
Access:
This register can only be written if the WPEN bit is cleared in the
Possible limitations on PLLA input frequencies and multiplier factors should be checked before using the PMC.
Warning: Bit 29 must always be set to 1 when programming the CKGR_PLLAR register.
• DIVA: Divider
• PLLACOUNT: PLLA Counter
Specifies the number of Slow Clock cycles x8 before the LOCKA bit is set in PMC_SR after CKGR_PLLAR is written.
• MULA: PLLA Multiplier
0 = The PLLA is deactivated.
1 up to 2047 = The PLLA Clock frequency is the PLLA input frequency multiplied by MULA + 1.
484
DIVA
0
1
2 - 255
31
23
15
–
–
7
SAM3U Series
CKGR_PLLAR
0x400E0428
Read-write
30
22
14
–
–
6
29
21
13
1
5
Divider Selected
Divider output is 0
Divider is bypassed (DIVA=1)
Divider output is the selected clock divided by DIVA
28
20
12
–
4
MULA
DIVA
“PMC Write Protect Mode
27
19
11
–
3
PLLACOUNT
26
18
10
2
Register”.
MULA
25
17
9
1
6430D–ATARM–25-Mar-11
24
16
8
0
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