SAM9X35 Atmel Corporation, SAM9X35 Datasheet - Page 257

• Manufacturer Part Number: SAM9X35
• Manufacturer: Atmel Corporation

Specifications of SAM9X35

• Flash (kbytes): 0 Kbytes
• Pin Count: 217
• Max. Operating Frequency: 400 MHz
• Cpu: ARM926
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 105
• Ext Interrupts: 105
• Usb Transceiver: 3
• Usb Speed: Hi-Speed
• Usb Interface: Host, Device
• Spi: 2
• Twi (i2c): 3
• Uart: 7
• Can: 2
• Lin: 4
• Ssc: 1
• Ethernet: 1
• Sd / Emmc: 2
• Graphic Lcd: Yes
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 12
• Adc Resolution (bits): 10
• Adc Speed (ksps): 440
• Resistive Touch Screen: Yes
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 32
• Self Program Memory: NO
• External Bus Interface: 1
• Dram Memory: DDR/LPDDR, SDRAM/LPSDR
• Nand Interface: Yes
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.8/3.3
• Operating Voltage (vcc): 0.9 to 1.1
• Fpu: No
• Mpu / Mmu: No/Yes
• Timers: 6
• Output Compare Channels: 6
• Input Capture Channels: 6
• Pwm Channels: 4
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: No

23.7.46
Name:
Address:
Access:
Reset:
For more information on Write Protection Registers, refer to
Interface”.
• WPEN: Write Protect Enable
0: Disables the Write Protect if WPKEY corresponds to 0x50494F (“PIO” in ASCII).
1: Enables the Write Protect if WPKEY corresponds to 0x50494F (“PIO” in ASCII).
Protects the registers:
“PIO Enable Register” on page 232
“PIO Disable Register” on page 232
“PIO Output Enable Register” on page 233
“PIO Output Disable Register” on page 234
“PIO Input Filter Enable Register” on page 235
“PIO Input Filter Disable Register” on page 235
“PIO Multi-driver Enable Register” on page 240
“PIO Multi-driver Disable Register” on page 241
“PIO Pull Up Disable Register” on page 242
“PIO Pull Up Enable Register” on page 242
“PIO Peripheral ABCD Select Register 1” on page 244
“PIO Peripheral ABCD Select Register 2” on page 245
“PIO Output Write Enable Register” on page 250
“PIO Output Write Disable Register” on page 250
“PIO Pad Pull Down Disable Register” on page 248
“PIO Pad Pull Down Status Register” on page 249
11055B–ATARM–22-Sep-11
11055B–ATARM–22-Sep-11
31
23
15
7
–
PIO Write Protect Mode Register
PIO_WPMR
0xFFFFF4E4 (PIOA), 0xFFFFF6E4 (PIOB), 0xFFFFF8E4 (PIOC), 0xFFFFFAE4 (PIOD)
Read-write
See
Table 23-2
30
22
14
6
–
29
21
13
5
–
28
20
12
4
–
WPKEY
WPKEY
WPKEY
Section 23.7 ”Parallel Input/Output Controller (PIO) User
27
19
11
3
–
26
18
10
–
2
25
17
–
9
1
SAM9X35
SAM9X35
WPEN
24
16
8
0
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