AT91SAM7SE256B-CUR Atmel, AT91SAM7SE256B-CUR Datasheet - Page 103
![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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Figure 19-2. Code Read Optimization in Thumb Mode for FWS = 0
Note:
Figure 19-3. Code Read Optimization in Thumb Mode for FWS = 1
Note:
6222F–ATARM–14-Jan-11
ARM Request (16-bit)
ARM Request (16-bit)
Data To ARM
Data To ARM
Buffer (32 bits)
Flash Access
Buffer (32 bits)
Flash Access
Master Clock
Master Clock
Code Fetch
When FWS is equal to 0, all accesses are performed in a single-cycle access.
When FWS is equal to 1, in case of sequential reads, all the accesses are performed in a single-cycle access (except for the
first one).
Code Fetch
@Byte 0
@Byte 0
1 Wait State Cycle
Bytes 0-3
@Byte 2
Bytes 0-1
Bytes 0-3
@Byte 2
Bytes 4-7
@Byte 4
Bytes 0-3
Bytes 2-3
Bytes 0-1
1 Wait State Cycle
Bytes 4-5
@Byte 6
@Byte 4
Bytes 2-3
Bytes 4-7
Bytes 4-7
Bytes 0-3
SAM7SE512/256/32 Preliminary
Bytes 8-11
@Byte 8
@Byte 6
Bytes 6-7
Bytes 4-5
1 Wait State Cycle
@Byte 10
Bytes 8-9
@Byte 8
Bytes 6-7
Bytes 8-11
Bytes 8-11
Bytes 4-7
Bytes 12-15
Bytes 10-11
@Byte 10
@Byte 12
Bytes 8-9
1 Wait State Cycle
Bytes 12-13
Bytes 10-11
@Byte 12
@Byte 14
Bytes 12-15
Bytes 8-11
Bytes 12-15
Bytes 16-19
Bytes 12-13
Bytes 14-15
@Byte 14
@Byte 16
103
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