SAM7SE512 Atmel Corporation, SAM7SE512 Datasheet - Page 214
SAM7SE512
Manufacturer Part Number
SAM7SE512
Description
Manufacturer
Atmel Corporation
Specifications of SAM7SE512
Flash (kbytes)
512 Kbytes
Pin Count
144
Max. Operating Frequency
48 MHz
Cpu
ARM7TDMI
Hardware Qtouch Acquisition
No
Max I/o Pins
88
Ext Interrupts
88
Usb Transceiver
1
Usb Speed
Full Speed
Usb Interface
Device
Spi
1
Twi (i2c)
1
Uart
3
Ssc
1
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
8
Adc Resolution (bits)
10
Adc Speed (ksps)
384
Resistive Touch Screen
No
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
32
Self Program Memory
NO
External Bus Interface
1
Dram Memory
sdram
Nand Interface
Yes
Picopower
No
Temp. Range (deg C)
-40 to 85
I/o Supply Class
1.8/3.3
Operating Voltage (vcc)
3.0 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
No
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• TWR: Write Recovery Delay
Reset value is two cycles.
This field defines the Write Recovery Time in number of cycles. Number of cycles is between 2 and 15.
If TWR is less than or equal to 2, two clock periods are inserted by default.
• TRC: Row Cycle Delay
Reset value is eight cycles.
This field defines the delay between a Refresh and an Activate Command in number of cycles. Number of cycles is
between 2 and 15.
If TRC is less than or equal to 2, two clock periods are inserted by default.
• TRP: Row Precharge Delay
Reset value is three cycles.
This field defines the delay between a Precharge Command and another Command in number of cycles. Number of cycles
is between 2 and 15.
If TRP is less than or equal to 2, two clock periods are inserted by default.
• TRCD: Row to Column Delay
Reset value is three cycles.
This field defines the delay between an Activate Command and a Read/Write Command in number of cycles. Number of
cycles is between 2 and 15.
If TRCD is less than or equal to 2, two clock periods are inserted by default.
• TRAS: Active to Precharge Delay
Reset value is five cycles.
This field defines the delay between an Activate Command and a Precharge Command in number of cycles. Number of
cycles is between 2 and 15.
If TRAS is less than or equal to 2, two clock periods are inserted by default.
• TXSR: Exit Self Refresh to Active Delay
Reset value is five cycles.
This field defines the delay between SCKE set high and an Activate Command in number of cycles. Number of cycles is
between 1/2 and 15.5.
If TXSR is equal to 0, 1/2 clock period is inserted by default.
214
0
0
1
1
CAS
SAM7SE512/256/32
0
1
0
1
CAS Latency (Cycles)
Reserved
Reserved
Reserved
2
6222F–ATARM–14-Jan-11
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