AT91SAM7SE256-AU Atmel, AT91SAM7SE256-AU Datasheet - Page 134
![IC ARM7 MCU FLASH 256K 128-LQFP](/photos/6/71/67112/128-lqfp_sml.jpg)
AT91SAM7SE256-AU
Manufacturer Part Number
AT91SAM7SE256-AU
Description
IC ARM7 MCU FLASH 256K 128-LQFP
Manufacturer
Atmel
Series
AT91SAMr
Datasheets
1.AT88SC-SDK1.pdf
(90 pages)
2.AT91SAM7SE256-AU.pdf
(673 pages)
3.AT91SAM7SE32-AU.pdf
(655 pages)
Specifications of AT91SAM7SE256-AU
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
128-LQFP
Processor Series
AT91SAMx
Core
ARM7TDMI
Data Bus Width
32 bit
Data Ram Size
32 KB
Interface Type
SPI, TWI, USART
Maximum Clock Frequency
55 MHz
Number Of Programmable I/os
88
Number Of Timers
2
Operating Supply Voltage
3 V to 3.6 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
JTRACE-ARM-2M, KSK-AT91SAM7S-PL, MDK-ARM, RL-ARM, ULINK2
Development Tools By Supplier
AT91SAM-ICE, AT91-ISP, AT91SAM7SE-EK
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 8 Channel
Controller Family/series
AT91SAM7xxxxx
No. Of I/o's
88
Ram Memory Size
32KB
Cpu Speed
48MHz
No. Of Timers
3
Rohs Compliant
Yes
For Use With
AT91SAM7SE-EK - EVAL BOARD FOR AT91SAM7SEAT91SAM-ICE - EMULATOR FOR AT91 ARM7/ARM9
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AT91SAM7SE256-AU
Manufacturer:
ATMEL
Quantity:
165
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20.3.4.3
20.3.4.4
20.3.4.5
134
AT91SAM7SE512/256/32 Preliminary
Flash Full Erase Command
Flash Lock Commands
Flash General-purpose NVM Commands
This command is used to erase the Flash memory planes.
All lock bits must be deactivated before using the Full Erase command. This can be done by
using the CLB command.
Table 20-21. Full Erase Command
Lock bits can be set using WPL or EWPL commands. They can also be set by using the Set
Lock command (SLB). With this command, several lock bits can be activated at the same time.
Bit 0 of Bit Mask corresponds to the first lock bit and so on.
In the same way, the Clear Lock command (CLB) is used to clear lock bits. All the lock bits can
also be cleared by the EA command.
Table 20-22. Set and Clear Lock Bit Command
Lock bits can be read using Get Lock Bit command (GLB). When a bit set in the Bit Mask is
returned, then the corresponding lock bit is active.
Table 20-23. Get Lock Bit Command
General-purpose NVM bits (GP NVM) can be set with the Set Fuse command (SFB). Using this
command, several GP NVM bits can be activated at the same time. Bit 0 of Bit Mask corre-
sponds to the first fuse bit and so on.
In the same way, the Clear Fuse command (CFB) is used to clear GP NVM bits. All the general-
purpose NVM bits are also cleared by the EA command.
Table 20-24. Set and Clear General-purpose NVM Bit Command
Read/Write
Write
Read/Write
Write
Write
Read/Write
Write
Read
Read/Write
Write
Write
DR Data
EA
DR Data
SLB or CLB
Bit Mask
DR Data
GLB
Bit Mask
DR Data
SFB or CFB
Bit Mask
6222B–ATARM–26-Mar-07
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