AT91SAM7SE256B-CUR Atmel, AT91SAM7SE256B-CUR Datasheet - Page 641
![IC ARM7 MCU FLASH 256K 128-LQFP](/photos/39/70/397007/bga-144_sml.jpg)
AT91SAM7SE256B-CUR
Manufacturer Part Number
AT91SAM7SE256B-CUR
Description
IC ARM7 MCU FLASH 256K 128-LQFP
Manufacturer
Atmel
Series
AT91SAMr
Datasheet
1.AT91SAM7SE256-AU.pdf
(673 pages)
Specifications of AT91SAM7SE256B-CUR
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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40.8.6
The maximum operating frequency is given in
time when the processor is fetching code out of it.
quency depending on the FWS field of the MC_FMR register. This field defines the number of wait states required to
access the Embedded Flash Memory.
Table 40-32. Embedded Flash Wait States (VDDCORE = 1.65V)
Notes:
Table 40-33. Embedded Flash Wait States (VDDCORE = 1.8V)
Notes:
Table 40-34. AC Flash Characteristics
6222F–ATARM–14-Jan-11
Parameter
Program Cycle Time
Full Chip Erase
1. FWS = Flash Wait States
2. It is not necessary to use 3 wait states because the Flash can operate at maximum frequency with only 2 wait states.
1. FWS = Flash Wait States
2. It is not necessary to use 2 or 3 wait states because the Flash can operate at maximum frequency with only 1 wait state.
Embedded Flash Characteristics
FWS
FWS
3
2
3
0
1
2
0
1
(2)
(2)
(2)
(1)
(1)
Conditions
per page including auto-erase
per page without auto-erase
Read Operations
Read Operations
2 cycles
3 cycles
4 cycles
2 cycles
3 cycles
4 cycles
1 cycle
1 cycle
Table 40-32
Table 40-32
and
SAM7SE512/256/32 Preliminary
Table 40-33
and
Table 40-33
Maximum Operating Frequency (MHz)
Maximum Operating Frequency (MHz)
Min
15
but is limited by the Embedded Flash access
give the device maximum operating fre-
48.2
48.2
25
44
30
55
55
55
Max
6
3
Units
ms
ms
ms
641
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