SAM7SE32 Atmel Corporation, SAM7SE32 Datasheet - Page 187

• Manufacturer Part Number: SAM7SE32
• Manufacturer: Atmel Corporation

Specifications of SAM7SE32

• Flash (kbytes): 32 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): 8
• 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

Figure 22-37. Read Access in Standard Protocol using NWAIT
Note:
22.6.7.4
6222F–ATARM–14-Jan-11
synchronized
NWR0/NWE
NWR1/NUB
internally
A0/NLB
NWAIT
NWAIT
D[15:0]
A[22:1]
MCK
NRD
NCS
1. Read access, memory data bus width = 16, NWS = 5, WSEN = 1
Memory Access Example Waveforms
Figure 22-38 on page 188
write accesses to the various associated external memory devices. The configurations
described are shown in
Table 22-3.
Wait Delay Falling from NRD/NOE
0002C44
Figure Number
Figure 22-38
Figure 22-39
Figure 22-40
Figure 22-41
Figure 22-42
Figure 22-43
Figure 22-44
0003
Memory Access Waveforms
Table
through
Number of Wait
22-3.
States
Figure 22-44 on page 194
0
1
1
0
1
1
0
(1)
Bus Width
16
16
16
16
SAM7SE512/256/32
8
8
8
show the waveforms for read and
Size of Data Transfer
Half-word
Half-word
Word
Word
Word
Byte
Byte
187