AT91SAM7A3-AU Atmel, AT91SAM7A3-AU Datasheet - Page 102
AT91SAM7A3-AU
Manufacturer Part Number
AT91SAM7A3-AU
Description
IC ARM7 MCU FLASH 256K 100LQFP
Manufacturer
Atmel
Series
AT91SAMr
Specifications of AT91SAM7A3-AU
Core Processor
ARM7
Core Size
16/32-Bit
Speed
60MHz
Connectivity
CAN, I²C, MMC, SPI, SSC, UART/USART
Peripherals
POR, PWM, WDT
Number Of I /o
62
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
100-LQFP
Controller Family/series
AT91SAM7xx
No. Of I/o's
62
Ram Memory Size
32KB
Cpu Speed
60MHz
No. Of Timers
3
Rohs Compliant
Yes
Package
100LQFP
Device Core
ARM7TDMI
Family Name
91S
Maximum Speed
60 MHz
Operating Supply Voltage
3.3 V
Data Bus Width
32 Bit
Number Of Programmable I/os
62
Interface Type
CAN/SPI/I2S/TWI/USART/USB
On-chip Adc
2(8-chx10-bit)
Number Of Timers
3
Processor Series
AT91SAMx
Core
ARM7TDMI
Data Ram Size
32 KB
Maximum Clock Frequency
60 MHz
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
JTRACE-ARM-2M, MDK-ARM, RL-ARM, ULINK2
Development Tools By Supplier
AT91SAM-ICE, AT91-ISP, AT91SAM7A3-EK
Minimum Operating Temperature
- 40 C
Cpu Family
91S
Device Core Size
32b
Frequency (max)
60MHz
Total Internal Ram Size
32KB
# I/os (max)
62
Number Of Timers - General Purpose
3
Operating Supply Voltage (typ)
3.3V
Operating Supply Voltage (max)
3.6V
Operating Supply Voltage (min)
3V
Instruction Set Architecture
RISC
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
100
Package Type
LQFP
For Use With
AT91SAM-ICE - EMULATOR FOR AT91 ARM7/ARM9AT91SAM7A3-EK - KIT EVAL FOR AT91SAM7A3
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
Company:
Part Number:
AT91SAM7A3-AU
Manufacturer:
MXIC
Quantity:
1 001
Company:
Part Number:
AT91SAM7A3-AU
Manufacturer:
Atmel
Quantity:
730
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Figure 20-1. Embedded Flash Memory Mapping
20.2.2
102
Start Address + Flash Size -1
AT91SAM7A3 Preliminary
Read Operations
Start Address
An optimized controller manages embedded Flash reads. A system of 2 x 32-bit buffers is
added in order to start access at following address during the second read, thus increasing
performance when the processor is running in Thumb mode (16-bit instruction set). See
ure
This optimization concerns only Code Fetch and not Data.
The read operations can be performed with or without wait state. Up to 3 wait states can be
programmed in the field FWS (Flash Wait State) in the Flash Mode Register MC_FMR (see
”MC Flash Mode Register” on page
access of the embedded Flash.
The Flash memory is accessible through 8-, 16- and 32-bit reads.
As the Flash block size is smaller than the address space reserved for the internal memory
area, the embedded Flash wraps around the address space and appears to be repeated
within it.
20-2,
Locked Region Area
Unlockable Area
Flash Memory
32 bits wide
Figure 20-3
and
Figure
20-4.
Lock Region (n-1)
110). Defining FWS to be 0 enables the single-cycle
Lock Region 0
Lock Region 1
Lock Bit n-1
Lock Bit 0
Lock Bit 1
Page ( (n-1)*m )
Page (n*m-1)
6042E–ATARM–14-Dec-06
Page (m-1)
Page 0
Fig-
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