AT91SAM7SE256B-AUR Atmel, AT91SAM7SE256B-AUR Datasheet - Page 213
AT91SAM7SE256B-AUR
Manufacturer Part Number
AT91SAM7SE256B-AUR
Description
IC ARM7 MCU FLASH 256K 128-LQFP
Manufacturer
Atmel
Series
AT91SAMr
Datasheet
1.AT91SAM7SE256-AU.pdf
(673 pages)
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
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23.7.3
Name:
Access:
Reset Value:
• NC: Number of Column Bits
Reset value is 8 column bits.
• NR: Number of Row Bits
Reset value is 11 row bits.
• NB: Number of Banks
Reset value is two banks.
• CAS: CAS Latency
Reset value is two cycles.
In the SDRAMC, only a CAS latency of two cycles is managed. In any case, another value must be programmed.
6222F–ATARM–14-Jan-11
0
0
1
1
TRAS
TWR
TRP
31
23
15
0
0
1
1
–
7
NR
NB
0
1
SDRAMC Configuration Register
NC
0
1
0
1
30
22
14
0
1
0
1
SDRAMC_CR
Read/Write
0x2A99C140
6
Number of Banks
Row Bits
Reserved
CAS
11
12
13
Column Bits
2
4
10
11
8
9
29
21
13
5
TRCD
TXSR
TRC
NB
28
20
12
4
SAM7SE512/256/32 Preliminary
27
19
11
3
NR
26
18
10
2
TRAS
TWR
TRP
25
17
9
1
NC
24
16
8
0
213
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