AT91SAM7X256B-AU Atmel, AT91SAM7X256B-AU Datasheet - Page 669
![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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42. Revision History
6120H–ATARM–17-Feb-09
Version
6120H
Comments
Overview:
Table 3-1, “Signal Description List”
Section 6.1 ”JTAG Port Pins”, Section 6.2 ”Test Pin”
Section 8.4.3 ”Internal Flash”,
Remap Command.”
Figure 9-1,”System Controller Block Diagram”,
”Features”,
ADC:
Section 35.6.2 ”ADC Mode
“SHTIM: Sample & Hold Time” on page 495
Figure 35-1,”Analog-to-Digital Converter Block
Figure 35.5.5,”Conversion
AIC:
Section 23.8.16 ”AIC Spurious Interrupt Vector
Section 23.7.5 ”Protect
CAN:
Section 36.6.4.6 ”Error Interrupt
Section 36.8.5 ”CAN Status
ERRA, ERP.
DBGU:
Section 26.1
FFPI:
Section 20.2 ”Parallel Fast Flash
and Crystal Oscillator
Section 20.3 ”Serial Fast Flash
Crystal Oscillator
PMC:
”PMC System Clock Enable
Register”, bit field 11 contains PCK3.
PWM:
Section 33.6.12 ”PWM Channel Counter
RSTC:
Section 13.2.4.4 ”Software
SSC:
Section 31.8.3 ”SSC Receive Clock Mode
”Debug Unit
”Overview”, ...” two-pin UART can be used standalone for general purpose serial communication.” 5846
The most recent version appears first in the tables that follow.
Mode”, writing PROT in AIC_DCR enables protection mode (3rd paragraph).
(DBGU)”, added
Triggers”, update to the third paragraph detailing hardware trigger.
Reset”, PERRST must be used with PROCRST, except for debug purposes.
Register”, PRESCAL and STARTUP bit fields widened.
Register”, added references to the new chapter in bit descriptions, WARN, BOFF,
Register”,
updated: “At any time, the Flash is mapped ... if GPNVM bit 2 is set and before the
Programming”,
Handler”, added to datasheet.
Programming”,
footnote added to JTAGSEL, ERASE and TST pin comments.
”PMC System Clock Disable Register”
Register”, typos corrected in bit description.
”Mode for General Purpose 2-wire UART Serial Communication”
Register”, corrected bit name to STTDLY.
AT91SAM7X512/256/128 Preliminary
formula updated in bit description.
Section 20.3.1 ”Device
RTT is reset by power_on_reset.
Diagram”, VDDANA replaced by VDDIN. PMC added to figure.
Register”, typo fixed in bit fields. (SIQV is SIVR).
Section 20.2.1 ”Device
and
Section 6.4 ”ERASE Pin”,
Configuration”, added status of PIOs and
Configuration”, added status of PIOs
and
”PMC System Clock Status
updated.
Change
Request
Ref.
5064
5850
5223
5846
4430
5254
rfo
4749
5193
4736
5989
5722
5185
669
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