SAM3S4B Atmel Corporation, SAM3S4B Datasheet - Page 975
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SAM3S4B
Manufacturer Part Number
SAM3S4B
Description
Manufacturer
Atmel Corporation
Specifications of SAM3S4B
Flash (kbytes)
256 Kbytes
Pin Count
64
Max. Operating Frequency
64 MHz
Cpu
Cortex-M3
# Of Touch Channels
23
Hardware Qtouch Acquisition
No
Max I/o Pins
79
Ext Interrupts
79
Usb Transceiver
1
Quadrature Decoder Channels
1
Usb Speed
Full Speed
Usb Interface
Device
Spi
3
Twi (i2c)
2
Uart
4
Ssc
1
Sd / Emmc
1
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
10
Adc Resolution (bits)
12
Adc Speed (ksps)
1000
Analog Comparators
1
Resistive Touch Screen
No
Dac Channels
2
Dac Resolution (bits)
12
Temp. Sensor
Yes
Crypto Engine
No
Sram (kbytes)
48
Self Program Memory
YES
Dram Memory
No
Nand Interface
Yes
Picopower
No
Temp. Range (deg C)
-40 to 85
I/o Supply Class
1.8/3.3
Operating Voltage (vcc)
1.62 to 3.6
Fpu
No
Mpu / Mmu
Yes / No
Timers
3
Output Compare Channels
3
Input Capture Channels
3
Pwm Channels
4
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
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38.7.8
Name:
Address:
Access:
• WPEN: Write Protect Enable
0 = disables the Write Protect if WPKEY corresponds to 0x414343 (“ACC” in ASCII).
1 = enables the Write Protect if WPKEY corresponds to 0x414343 (“ACC” in ASCII).
Protects the registers:
• WPKEY: Write Protect KEY
This security code is needed to set/reset the WPROT bit value (see
Must be filled with “ACC” ASCII code.
6500C–ATARM–8-Feb-11
•
•
“ACC Mode Register” on page 969
“ACC Analog Control Register” on page 974
31
23
15
7
–
ACC Write Protect Mode Register
30
22
14
ACC_WPMR
0x400400E4
Read-write
6
–
29
21
13
5
–
28
20
12
4
–
WPKEY
WPKEY
WPKEY
27
19
11
Section 38.6.3 ”Write Protection System”
3
–
26
18
10
2
–
25
17
9
1
–
SAM3S
for details).
WPEN
24
16
8
0
975
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