SAM9G25 Atmel Corporation, SAM9G25 Datasheet - Page 269
SAM9G25
Manufacturer Part Number
SAM9G25
Description
Manufacturer
Atmel Corporation
Datasheets
1.SAM9261.pdf
(248 pages)
2.SAM9261.pdf
(1274 pages)
3.SAM9261.pdf
(43 pages)
4.SAM9G25.pdf
(1147 pages)
5.SAM9G25.pdf
(53 pages)
Specifications of SAM9G25
Flash (kbytes)
0 Kbytes
Pin Count
247
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
Lin
4
Ssc
1
Ethernet
1
Sd / Emmc
2
Graphic Lcd
No
Video Decoder
No
Camera Interface
Yes
Adc Channels
12
Adc Resolution (bits)
10
Adc Speed (ksps)
440
Resistive Touch Screen
No
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
32
Self Program Memory
NO
External Bus Interface
1
Dram Memory
DDR2/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
- SAM9261 PDF datasheet
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- SAM9261 PDF datasheet #3
- SAM9G25 PDF datasheet #4
- SAM9G25 PDF datasheet #5
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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 244
“PIO Disable Register” on page 244
“PIO Output Enable Register” on page 245
“PIO Output Disable Register” on page 246
“PIO Input Filter Enable Register” on page 247
“PIO Input Filter Disable Register” on page 247
“PIO Multi-driver Enable Register” on page 252
“PIO Multi-driver Disable Register” on page 253
“PIO Pull Up Disable Register” on page 254
“PIO Pull Up Enable Register” on page 254
“PIO Peripheral ABCD Select Register 1” on page 256
“PIO Peripheral ABCD Select Register 2” on page 257
“PIO Output Write Enable Register” on page 262
“PIO Output Write Disable Register” on page 262
“PIO Pad Pull Down Disable Register” on page 260
“PIO Pad Pull Down Status Register” on page 261
11032A–ATARM–27-Jul-11
11032A–ATARM–27-Jul-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
SAM9G25
SAM9G25
WPEN
24
16
8
0
269
269
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