SAM7SE256 Atmel Corporation, SAM7SE256 Datasheet - Page 150

• Manufacturer Part Number: SAM7SE256
• Manufacturer: Atmel Corporation

Specifications of SAM7SE256

• Flash (kbytes): 256 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

21.7.3
21.7.3.1
21.7.3.2
150
SAM7SE512/256/32
8-bit NAND Flash
Hardware Configuration
Software Configuration
(ANY PIO)
NANDOE
NANDWE
(ANY PIO)
D[0..7]
CLE
ALE
The following configuration must be respected:
• CLE, ALE, NANDOE and NANDWE signals are multiplexed with PIO lines and thus the
• Assign the EBI CS3 to the NAND Flash by setting the bit EBI_CS3A in the EBI Chip Select
• Reserve A21/A22 for ALE/CLE functions. Address and Command Latches are controlled
• Configure a PIO line as an input to manage the Ready/Busy signal.
• Configure Static Memory Controller CS3 Setup, Pulse, Cycle and Mode according to NAND
dedicated PIOs must be programmed in peripheral mode in the PIO controller.
Assignment Register.
respectively by setting to 1 the address bit A21 and A22 during accesses.
Flash timings, the data bus width and the system bus frequency.
3V3
R1
R1
R2
R2
10K
10K
10K
10K
16
17
18
19
10
11
14
15
20
21
22
23
24
25
26
8
9
7
1
2
3
4
5
6
U1
U1
CLE
ALE
RE
WE
CE
R/B
WP
N.C
N.C
N.C
N.C
N.C
N.C
N.C
N.C
N.C
N.C
N.C
N.C
N.C
N.C
N.C
N.C
N.C
TSOP48 PACKAGE
2 Gb
K9F2G08U0M
K9F2G08U0M
VCC
VCC
PRE
VSS
VSS
I/O0
I/O1
I/O2
I/O3
I/O4
I/O5
I/O6
I/O7
N.C
N.C
N.C
N.C
N.C
N.C
N.C
N.C
N.C
N.C
N.C
29
30
31
32
41
42
43
44
48
47
46
45
40
39
38
35
34
33
28
27
37
12
36
13
D0
D1
D2
D3
D4
D5
D6
D7
C1
C1
100NF
100NF
3V3
C2
C2
100NF
100NF
6222F–ATARM–14-Jan-11