AT91SAM7X256B-AU Atmel, AT91SAM7X256B-AU Datasheet - Page 676
![IC MCU 256KB FLASH 100LQFP](/photos/6/76/67646/313-100-lqfp_sml.jpg)
AT91SAM7X256B-AU
Manufacturer Part Number
AT91SAM7X256B-AU
Description
IC MCU 256KB FLASH 100LQFP
Manufacturer
Atmel
Series
AT91SAMr
Specifications of AT91SAM7X256B-AU
Core Processor
ARM7
Core Size
16/32-Bit
Speed
55MHz
Connectivity
CAN, Ethernet, I²C, SPI, SSC, UART/USART, USB
Peripherals
Brown-out Detect/Reset, DMA, POR, PWM, WDT
Number Of I /o
62
Program Memory Size
256KB (256K x 8)
Program Memory Type
FLASH
Ram Size
64K 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
Package
100LQFP
Device Core
ARM7TDMI
Family Name
91S
Maximum Speed
55 MHz
Operating Supply Voltage
1.8|3.3 V
Data Bus Width
32 Bit
Number Of Programmable I/os
62
Interface Type
CAN/Ethernet/SPI/I2S/TWI/USART/USB
On-chip Adc
8-chx10-bit
Number Of Timers
3
Controller Family/series
AT91SAM7xxxxx
No. Of I/o's
62
Ram Memory Size
64KB
Cpu Speed
55MHz
No. Of Timers
1
Rohs Compliant
Yes
Cpu Family
91S
Device Core Size
32b
Frequency (max)
55MHz
Total Internal Ram Size
64KB
# I/os (max)
62
Number Of Timers - General Purpose
3
Operating Supply Voltage (typ)
1.8/3.3V
Operating Supply Voltage (max)
1.95/3.6V
Operating Supply Voltage (min)
1.65/3V
Instruction Set Architecture
RISC
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
100
Package Type
LQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AT91SAM7X256B-AU
Manufacturer:
Atmel
Quantity:
1 800
Part Number:
AT91SAM7X256B-AU
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
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Version
6120F
(Continued) Comments
AT91SAM7X512/256/128 Preliminary
ADC:
“ADC Timings” on page 486
CAN: Update to message acceptance example in
page
New information on byte priority added to
and
Corrected MDL bit description in
Update to specify allowed values for BRP field on
and in
EMAC:
“Interrupt Disable Register” on page
“Interrupt Mask Register” on page
Section 38. ”AT91SAM7X512/256/128 Electrical Characteristics”
“Absolute Maximum Ratings” on page 615
Updated
“Main Oscillator Characteristics,” on page
Added
Updated I
Added information on data sampling in SPI master mode to
Updated
Added
9, ”EMAC RMII Mode” on page
Errata updated:
Added
Section 41.2.6.1 ”RTT: Possible Event Loss when Reading RTT_SR”
Section 41.2.7.4 ”SPI: Chip Select and Fixed Mode”
Section 41.2.7.5 ”SPI: Baudrate Set to 1”
TWI: Behavior of OVRE Bit (removed)
Section 41.2.9.5 ”TWI: Software Reset”
Section 41.2.10.2 ”USART: Hardware Handshaking – Two Characters Sent”
Section 41.2.10.3 ”USART: RXBRK Flag Error in Asynchronous Mode”
PIO: Leakage on PB27 - PB 30 ....”the leakage can be 25 µA in worst case...”
Changed conditions of parameters I
Section 36.8.18 “CAN Message Data High Register” on page
508.
Section 35.2 “Block Diagram” on page 485
Section 36.8.6 “CAN Baudrate Register” on page
Table 38-10, “Crystal Characteristics,” on page
Table 38-24, “EMAC RMII Specific Signals (Only for AT91SAM7X512),” on page 632
Section 41.1 “Marking” on page
“Interrupt Enable Register” on page
Table 38-5, “DC Flash Characteristics AT91SAM7X512/256/128,” on page 617
Table 38-22, “EMAC Signals,” on page 630
DDBP
in
Table 38-11, “XIN Clock Electrical Characteristics,” on page
typo corrected in warning
632.
Section 36.8.17 “CAN Message Data Low Register” on page
595, access changed to Read-only.
PULLUP
593, access changed to Write-only.
641.
Section 36.8.17 “CAN Message Data Low Register” on page 559
621.
change to Maximum Operating Voltages
and I
591, access changed to Write-only.
LEAK
dedicated and I/O line multiplexed inputs differentiated.
Section 36.6.4 ”CAN 2.0 Standard Features”, page 513
Section 36.6.2.1 “Message Acceptance Procedure” on
in
622.
Table 38-2, “DC Characteristics,” on page
545.
Table 38-21, “SPI Timings,” on page
560.
622.
and
and
Table 38-9,
559.
Figure 38-
629.
616.
6120H–ATARM–17-Feb-09
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Ref.
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