AT91SAM7X256B-CU Atmel, AT91SAM7X256B-CU Datasheet - Page 105
![IC MCU 256KB FLASH 100TFBGA](/photos/6/89/68968/313-100-cbga_sml.jpg)
AT91SAM7X256B-CU
Manufacturer Part Number
AT91SAM7X256B-CU
Description
IC MCU 256KB FLASH 100TFBGA
Manufacturer
Atmel
Series
AT91SAMr
Specifications of AT91SAM7X256B-CU
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-TFBGA
Processor Series
91S
Core
ARM7TDMI
Data Bus Width
32 bit
Data Ram Size
64 KB
Interface Type
CAN, Ethernet, SPI, I2S, TWI, USART, USB
Maximum Clock Frequency
55 MHz
Number Of Programmable I/os
62
Number Of Timers
3
Operating Supply Voltage
3.3 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
Operating Temperature Range
- 40 C to + 85 C
Package
100TFBGA
Device Core
ARM7TDMI
Family Name
91S
Maximum Speed
55 MHz
On-chip Adc
8-chx10-bit
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
Details
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Manufacturer
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Figure 19-2. Code Read Optimization in Thumb Mode for FWS = 0
Note:
Figure 19-3. Code Read Optimization in Thumb Mode for FWS = 1
Note:
6120H–ATARM–17-Feb-09
ARM Request (16-bit)
ARM Request (16-bit)
Data To ARM
Data To ARM
Buffer (32 bits)
Flash Access
Buffer (32 bits)
Flash Access
Master Clock
Master Clock
Code Fetch
When FWS is equal to 0, all accesses are performed in a single-cycle access.
When FWS is equal to 1, in case of sequential reads, all the accesses are performed in a single-cycle access (except for the
first one).
Code Fetch
@Byte 0
@Byte 0
1 Wait State Cycle
Bytes 0-3
@Byte 2
Bytes 0-1
Bytes 0-3
@Byte 2
Bytes 4-7
@Byte 4
Bytes 0-3
Bytes 2-3
Bytes 0-1
1 Wait State Cycle
AT91SAM7X512/256/128 Preliminary
Bytes 4-5
@Byte 6
@Byte 4
Bytes 2-3
Bytes 4-7
Bytes 4-7
Bytes 0-3
Bytes 8-11
@Byte 8
@Byte 6
Bytes 6-7
Bytes 4-5
1 Wait State Cycle
@Byte 10
Bytes 8-9
@Byte 8
Bytes 6-7
Bytes 8-11
Bytes 8-11
Bytes 4-7
Bytes 12-15
Bytes 10-11
@Byte 10
@Byte 12
Bytes 8-9
1 Wait State Cycle
Bytes 12-13
Bytes 10-11
@Byte 12
@Byte 14
Bytes 12-15
Bytes 8-11
Bytes 12-15
Bytes 16-19
Bytes 12-13
Bytes 14-15
@Byte 14
@Byte 16
105
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