AT91SAM7SE256B-CU Atmel, AT91SAM7SE256B-CU Datasheet - Page 144
![IC ARM7 MCU FLASH 256K 144-LFBGA](/photos/12/13/121356/144-lfbga_sml.jpg)
AT91SAM7SE256B-CU
Manufacturer Part Number
AT91SAM7SE256B-CU
Description
IC ARM7 MCU FLASH 256K 144-LFBGA
Manufacturer
Atmel
Series
AT91SAMr
Datasheet
1.AT91SAM7SE256-AU.pdf
(673 pages)
Specifications of AT91SAM7SE256B-CU
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
*
Core
ARM7TDMI
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
Details
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Part Number
Manufacturer
Quantity
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Table 21-5.
21.6.5.4
Table 21-6.
144
Attribute Memory
Common Memory
I/O Mode
True IDE Mode
Pins
NCS4/CFCS0
NCS2/CFCS1
Mode Base Address
SAM7SE512/256/32 Preliminary
Multiplexing of CompactFlash Signals on EBI Pins
CompactFlash Mode Selection
Dedicated CompactFlash Interface Multiplexing
CS4A = 1
CFCS0
Figure 21-4. CompactFlash Read/Write Control Signals
Table 21-6
nals with other EBI signals on the EBI pins. The EBI pins in
the CompactFlash interface as soon as the CS4A and/or CS2A field of the Chip Select Assign-
ment Register is set
must not be used to drive any other memory devices.
The EBI pins in
CompactFlash interface is enabled (CS4A = 1 and/or CS2A = 1).
CFOE
NRD
CompactFlash Signals
1
0
and
External Bus Interface
Table 21-7 on page 145
Table 21-7
SMC
NWR0_NWE
CS2A = 1
CFCS1
(See “EBI Chip Select Assignment Register” on page
NRD
A22
A21
remain shared between all memory areas when the corresponding
NWR0_NWE
CFWE
1
1
describe the multiplexing of the CompactFlash logic sig-
CS4A = 0
NCS4
1
1
0
1
0
1
CompactFlash Logic
CFIOR
NRD
NRD
1
1
1
Table 21-6
EBI Signals
0
1
0
1
CS2A = 0
NCS2
are strictly dedicated to
6222F–ATARM–14-Jan-11
CFOE
CFWE
CFIOR
CFIOW
158.). These pins
NWR0_NWE
NWR0_NWE
CFIOW
1
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