AT91SAM7S256D-AU Atmel, AT91SAM7S256D-AU Datasheet - Page 41

• Manufacturer Part Number: AT91SAM7S256D-AU
• Description: ARM Microcontrollers - MCU 256K Flash SRAM 64K ARM based MCU
• Manufacturer: Atmel
• Series: SAM7S256r

Specifications of AT91SAM7S256D-AU

• Rohs: yes
• Core: ARM
• Processor Series: AT91SAM
• Data Bus Width: 16 bit/32 bit
• Maximum Clock Frequency: 55 MHz
• Program Memory Size: 256 KB
• Data Ram Size: 64 KB
• On-chip Adc: Yes
• Operating Supply Voltage: 3 V to 3.6 V
• Operating Temperature Range: - 40 C to + 85 C
• Package / Case: LQFP-64
• Mounting Style: SMD/SMT
• Interface Type: 2-Wire, I2S, SPI, USART
• Length: 7 mm

11. ARM7TDMI Processor Overview
11.1
Overview
The ARM7TDMI core executes both the 32-bit ARM
off between high performance and high code density.The ARM7TDMI processor implements Von Neuman archi-
tecture, using a three-stage pipeline consisting of Fetch, Decode, and Execute stages.
The main features of the ARM7TDMI processor are:
• ARM7TDMI Based on ARMv4T Architecture
• Two Instruction Sets
• Three-Stage Pipeline Architecture
– ARM
– Thumb
– Instruction Fetch (F)
– Instruction Decode (D)
– Execute (E)
®
High-performance 32-bit Instruction Set
®
High Code Density 16-bit Instruction Set
®
and 16-bit Thumb
®
instruction sets, allowing the user to trade
SAM7S Series [DATASHEET]
6175M–ATARM–26-Oct-12
41