AT91SAM7SE256B-AUR Atmel, AT91SAM7SE256B-AUR Datasheet - Page 139

• Manufacturer Part Number: AT91SAM7SE256B-AUR
• Description: IC ARM7 MCU FLASH 256K 128-LQFP
• Manufacturer: Atmel
• Series: AT91SAMr

Specifications of AT91SAM7SE256B-AUR

• Core Processor: ARM7
• Core Size: 16/32-Bit
• Speed: 55MHz
• Connectivity: EBI/EMI, I²C, SPI, SSC, UART/USART, USB
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 88
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 32K x 8
• Voltage - Supply (vcc/vdd): 1.65 V ~ 1.95 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Processor Series: SAM7SE256
• Core: ARM7TDMI
• Data Bus Width: 32 bit
• Data Ram Size: 32 KB
• Interface Type: SPI, USB
• Maximum Clock Frequency: 48 MHz
• Number Of Programmable I/os: 88
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Operating Temperature Range: - 40 C to + 85 C
• Processor To Be Evaluated: AT91SAM7SE256B
• Supply Current (max): 60 uA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

Table 21-3.
Notes:
6222F–ATARM–14-Jan-11
Pin
Controller
A18 - A20
A21/NANDALE
A22/REG/NANDCLE
NCS0
NCS1/SDCS
NCS2/CFCS1
NCS3/NANDCS
NCS4/CFCS0
NCS5/CFCE1
NCS6/CFCE2
NCS7
NANDOE
NANDWE
NRD/CFOE
NWR0/NWE/CFWE
NWR1/NBS1/CFIOR
NBS3/CFIOW
SDCK
SDCKE
RAS
CAS
SDWE
NWAIT
Pxx
Pxx
Pxx
(6)
(6)
(6)
1. For SDRAM connection examples, refer to
2. For NAND Flash connection examples, refer to “NAND Flash Support on AT91SAM7SE Microcontrollers”, application note.
3. I/O8 - I/O15 bits used only for 16-bit NAND Flash.
4. Not directly connected to the CompactFlash slot. Permits the control of the bidirectional buffer between the EBI data bus and
5. NWR1 enables upper byte writes. NWR0 enables lower byte writes.
6. Any free PIO line.
7. CE connection depends on the Nand Flash.
the CompactFlash slot.
For standard Nand Flash devices, it must be connected to any free PIO line.
For “CE don’t care” 8-bit Nand Flash devices, it can be either connected to NCS3/NANDCS or to any free PIO line.
For “CE don’t care” 16-bit Nand Flash devices, it must be connected to any free PIO line.
EBI Pins and External Static Device Connections (Continued)
8-bit Static
A18 - A20
Device
A21
A22
WE
WE
OE
CS
CS
CS
CS
CS
CS
CS
CS
–
–
–
–
–
–
–
–
–
–
–
–
A17 - A19
2 x 8-bit
Devices
Static
SMC
WE
WE
A20
A21
CS
CS
CS
CS
CS
CS
CS
CS
OE
–
–
–
–
–
–
–
–
–
–
–
–
(5)
(5)
“Using SDRAM on AT91SAM7SE Microcontrollers”,
A17 - A19
Device
16-bit
Static
NUB
A20
A21
WE
OE
CS
CS
CS
CS
CS
CS
CS
CS
–
–
–
–
–
–
–
–
–
–
–
–
Pins of the Interfaced Device
SAM7SE512/256/32 Preliminary
SDRAM
SDRAMC
DQM1
DQM3
CKE
RAS
CAS
CLK
WE
CS
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
(1)
CompactFlash
CD1 or CD2
CFRNW
CFCS1
CFCS0
WAIT
REG
IOW
CE1
CE2
IOR
WE
OE
–
–
–
–
–
–
–
–
–
–
–
–
–
–
(4)
(4)
(4)
True IDE Mode
CompactFlash
CD1 or CD2
CFRNW
CFCS1
CFCS0
SMC
WAIT
CS0
CS1
IOW
application note.
IOR
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
(4)
(4)
(4)
Flash
NAND
CE
CE
RDY
ALE
CLE
WE
RE
(8)
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
(7)
(7)
(2)
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