AT91SAM7SE512B-CUR Atmel, AT91SAM7SE512B-CUR Datasheet - Page 26
AT91SAM7SE512B-CUR
Manufacturer Part Number
AT91SAM7SE512B-CUR
Description
IC ARM7 MUC FLASH 512K 144-LFBGA
Manufacturer
Atmel
Series
AT91SAMr
Datasheet
1.AT91SAM7SE256-AU.pdf
(673 pages)
Specifications of AT91SAM7SE512B-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
512KB (512K 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
SAM7SE512
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
AT91SAM7SE512B
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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- Download datasheet (11Mb)
8.1.2.5
8.1.2.6
8.1.3
26
SAM7SE512/256/32 Preliminary
Fast Flash Programming Interface
Non-volatile Brownout Detector Control
Calibration Bits
The security bit can only be enabled through the Command “Set Security Bit” of the EFC User
Interface. Disabling the security bit can only be achieved by asserting the ERASE pin at 1 and
after a full flash erase is performed. When the security bit is deactivated, all accesses to the
flash are permitted.
It is important to note that the assertion of the ERASE pin should always be longer than 200 ms.
As the ERASE pin integrates a permanent pull-down, it can be left unconnected during normal
operation. However, it is safer to connect it directly to GND for the final application.
Two general purpose NVM (GPNVM) bits are used for controlling the brownout detector (BOD),
so that even after a power loss, the brownout detector operations remain in their state.
These two GPNVM bits can be cleared or set respectively through the commands “Clear Gen-
eral-purpose NVM Bit” and “Set General-purpose NVM Bit” of the EFC User Interface.
Sixteen NVM bits are used to calibrate the brownout detector and the voltage regulator. These
bits are factory configured and cannot be changed by the user. The ERASE pin has no effect on
the calibration bits.
The Fast Flash Programming Interface allows programming the device through either a serial
JTAG interface or through a multiplexed fully-handshaked parallel port. It allows gang-program-
ming with market-standard industrial programmers.
The FFPI supports read, page program, page erase, full erase, lock, unlock and protect
commands.
The Fast Flash Programming Interface is enabled and the Fast Programming Mode is entered
when the TST pin and the PA0 and PA1 pins are all tied high and PA2 tied to low.
• GPNVM bit 0 is used as a brownout detector enable bit. Setting the GPNVM bit 0 enables the
• GPNVM bit 1 is used as a brownout reset enable signal for the reset controller. Setting the
• The Flash of the SAM7SE512 is organized in 2048 pages of 256 bytes (dual plane). It reads
• The Flash of the SAM7SE256 is organized in 1024 pages of 256 bytes (single plane). It reads
• The Flash of the SAM7SE32 is organized in 256 pages of 128 bytes (single plane). It reads
• The Flash of the SAM7SE512/256 contains a 256-byte write buffer, accessible through a 32-
• The Flash of the SAM7SE32 contains a 128-byte write buffer, accessible through a 32-bit
BOD, clearing it disables the BOD. Asserting ERASE clears the GPNVM bit 0 and thus
disables the brownout detector by default.
GPNVM bit 1 enables the brownout reset when a brownout is detected, Clearing the GPNVM
bit 1 disables the brownout reset. Asserting ERASE disables the brownout reset by default.
as 131,072 32-bit words.
as 65,536 32-bit words.
as 32,768 32-bit words.
bit interface.
interface.
6222F–ATARM–14-Jan-11
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